diff --git a/Include/internal/pycore_modsupport.h b/Include/internal/pycore_modsupport.h
index d90f42e9cd8b07..7f9014c61e219f 100644
--- a/Include/internal/pycore_modsupport.h
+++ b/Include/internal/pycore_modsupport.h
@@ -84,12 +84,6 @@ PyAPI_FUNC(PyObject * const *) _PyArg_UnpackKeywords(
     int minkw,
     int varpos,
     PyObject **buf);
-#define _PyArg_UnpackKeywords(args, nargs, kwargs, kwnames, parser, minpos, maxpos, minkw, varpos, buf) \
-    (((minkw) == 0 && (kwargs) == NULL && (kwnames) == NULL && \
-      (minpos) <= (nargs) && ((varpos) || (nargs) <= (maxpos)) && (args) != NULL) ? \
-      (args) : \
-     _PyArg_UnpackKeywords((args), (nargs), (kwargs), (kwnames), (parser), \
-                           (minpos), (maxpos), (minkw), (varpos), (buf)))
 
 #ifdef __cplusplus
 }
diff --git a/Lib/test/clinic.test.c b/Lib/test/clinic.test.c
index dc5b4b27a07f99..4f2ec232c085a8 100644
--- a/Lib/test/clinic.test.c
+++ b/Lib/test/clinic.test.c
@@ -2258,12 +2258,15 @@ test_keywords(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject *a;
     PyObject *b;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2277,7 +2280,7 @@ test_keywords(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
 
 static PyObject *
 test_keywords_impl(PyObject *module, PyObject *a, PyObject *b)
-/*[clinic end generated code: output=591462ba3858e446 input=0d3484844749c05b]*/
+/*[clinic end generated code: output=6135077143fbb8e4 input=0d3484844749c05b]*/
 
 
 /*[clinic input]
@@ -2405,14 +2408,17 @@ test_keywords_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyO
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *a;
     PyObject *b = Py_None;
     PyObject *c = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2437,7 +2443,7 @@ test_keywords_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyO
 static PyObject *
 test_keywords_opt_impl(PyObject *module, PyObject *a, PyObject *b,
                        PyObject *c)
-/*[clinic end generated code: output=3ea21673d129218c input=eda7964f784f4607]*/
+/*[clinic end generated code: output=8cb0edf41ace2866 input=eda7964f784f4607]*/
 
 
 /*[clinic input]
@@ -2494,15 +2500,18 @@ test_keywords_opt_kwonly(PyObject *module, PyObject *const *args, Py_ssize_t nar
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *a;
     PyObject *b = Py_None;
     PyObject *c = Py_None;
     PyObject *d = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[4];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2537,7 +2546,7 @@ test_keywords_opt_kwonly(PyObject *module, PyObject *const *args, Py_ssize_t nar
 static PyObject *
 test_keywords_opt_kwonly_impl(PyObject *module, PyObject *a, PyObject *b,
                               PyObject *c, PyObject *d)
-/*[clinic end generated code: output=1e5fbe4eebfd40a5 input=209387a4815e5082]*/
+/*[clinic end generated code: output=0ecf3ab98b2d1673 input=209387a4815e5082]*/
 
 
 /*[clinic input]
@@ -2593,14 +2602,17 @@ test_keywords_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t nar
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *a;
     PyObject *b = Py_None;
     PyObject *c = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2625,7 +2637,7 @@ test_keywords_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t nar
 static PyObject *
 test_keywords_kwonly_opt_impl(PyObject *module, PyObject *a, PyObject *b,
                               PyObject *c)
-/*[clinic end generated code: output=bac8882cbcd50151 input=18393cc64fa000f4]*/
+/*[clinic end generated code: output=7e8c5a8f0b4648fd input=18393cc64fa000f4]*/
 
 
 /*[clinic input]
@@ -2679,12 +2691,15 @@ test_posonly_keywords(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject *a;
     PyObject *b;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2698,7 +2713,7 @@ test_posonly_keywords(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
 
 static PyObject *
 test_posonly_keywords_impl(PyObject *module, PyObject *a, PyObject *b)
-/*[clinic end generated code: output=7ddf55a744ba53dc input=1767b0ebdf06060e]*/
+/*[clinic end generated code: output=a383dc4168d2153f input=1767b0ebdf06060e]*/
 
 
 /*[clinic input]
@@ -2908,15 +2923,18 @@ test_posonly_keywords_opt(PyObject *module, PyObject *const *args, Py_ssize_t na
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     PyObject *a;
     PyObject *b;
     PyObject *c = Py_None;
     PyObject *d = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 4 || !args) {
+        PyObject *argsbuf[4];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2942,7 +2960,7 @@ test_posonly_keywords_opt(PyObject *module, PyObject *const *args, Py_ssize_t na
 static PyObject *
 test_posonly_keywords_opt_impl(PyObject *module, PyObject *a, PyObject *b,
                                PyObject *c, PyObject *d)
-/*[clinic end generated code: output=2c8b2ca42f821c66 input=cdf5a9625e554e9b]*/
+/*[clinic end generated code: output=f0ee57518562e088 input=cdf5a9625e554e9b]*/
 
 
 /*[clinic input]
@@ -2998,14 +3016,17 @@ test_posonly_keywords_opt2(PyObject *module, PyObject *const *args, Py_ssize_t n
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *a;
     PyObject *b = Py_None;
     PyObject *c = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -3030,7 +3051,7 @@ test_posonly_keywords_opt2(PyObject *module, PyObject *const *args, Py_ssize_t n
 static PyObject *
 test_posonly_keywords_opt2_impl(PyObject *module, PyObject *a, PyObject *b,
                                 PyObject *c)
-/*[clinic end generated code: output=969a3b2b020310f1 input=1581299d21d16f14]*/
+/*[clinic end generated code: output=b5c12aa1a78f8b64 input=1581299d21d16f14]*/
 
 
 /*[clinic input]
@@ -3087,15 +3108,18 @@ test_posonly_opt_keywords_opt(PyObject *module, PyObject *const *args, Py_ssize_
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *a;
     PyObject *b = Py_None;
     PyObject *c = Py_None;
     PyObject *d = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 4 || !args) {
+        PyObject *argsbuf[4];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -3126,7 +3150,7 @@ test_posonly_opt_keywords_opt(PyObject *module, PyObject *const *args, Py_ssize_
 static PyObject *
 test_posonly_opt_keywords_opt_impl(PyObject *module, PyObject *a,
                                    PyObject *b, PyObject *c, PyObject *d)
-/*[clinic end generated code: output=02bf5e64403946fc input=408798ec3d42949f]*/
+/*[clinic end generated code: output=de60a6f81eae3e90 input=408798ec3d42949f]*/
 
 
 /*[clinic input]
@@ -3184,8 +3208,8 @@ test_posonly_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t narg
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
+    PyObject *argsbuf[4];
     PyObject *a;
     PyObject *b;
     PyObject *c = Py_None;
@@ -3218,7 +3242,7 @@ test_posonly_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t narg
 static PyObject *
 test_posonly_kwonly_opt_impl(PyObject *module, PyObject *a, PyObject *b,
                              PyObject *c, PyObject *d)
-/*[clinic end generated code: output=26510e61948015e8 input=8d8e5643bbbc2309]*/
+/*[clinic end generated code: output=dd7e31ed11cd3dd3 input=8d8e5643bbbc2309]*/
 
 
 /*[clinic input]
@@ -3275,14 +3299,17 @@ test_posonly_kwonly_opt2(PyObject *module, PyObject *const *args, Py_ssize_t nar
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *a;
     PyObject *b = Py_None;
     PyObject *c = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -3307,7 +3334,7 @@ test_posonly_kwonly_opt2(PyObject *module, PyObject *const *args, Py_ssize_t nar
 static PyObject *
 test_posonly_kwonly_opt2_impl(PyObject *module, PyObject *a, PyObject *b,
                               PyObject *c)
-/*[clinic end generated code: output=b31416e16c908756 input=f7e5eed94f75fff0]*/
+/*[clinic end generated code: output=09746fc80ca339be input=f7e5eed94f75fff0]*/
 
 
 /*[clinic input]
@@ -3365,15 +3392,18 @@ test_posonly_opt_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *a;
     PyObject *b = Py_None;
     PyObject *c = Py_None;
     PyObject *d = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[4];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -3404,7 +3434,7 @@ test_posonly_opt_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t
 static PyObject *
 test_posonly_opt_kwonly_opt_impl(PyObject *module, PyObject *a, PyObject *b,
                                  PyObject *c, PyObject *d)
-/*[clinic end generated code: output=dc2337647059cb51 input=1e557dc979d120fd]*/
+/*[clinic end generated code: output=11e57f04a4cdeaa7 input=1e557dc979d120fd]*/
 
 
 /*[clinic input]
@@ -3464,8 +3494,8 @@ test_posonly_keywords_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssi
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[5];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 3;
+    PyObject *argsbuf[5];
     PyObject *a;
     PyObject *b;
     PyObject *c;
@@ -3501,7 +3531,7 @@ static PyObject *
 test_posonly_keywords_kwonly_opt_impl(PyObject *module, PyObject *a,
                                       PyObject *b, PyObject *c, PyObject *d,
                                       PyObject *e)
-/*[clinic end generated code: output=b7adeae40c9833a4 input=c3884a4f956fdc89]*/
+/*[clinic end generated code: output=7e3d9a63d5326794 input=c3884a4f956fdc89]*/
 
 
 /*[clinic input]
@@ -3559,15 +3589,18 @@ test_posonly_keywords_kwonly_opt2(PyObject *module, PyObject *const *args, Py_ss
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     PyObject *a;
     PyObject *b;
     PyObject *c = Py_None;
     PyObject *d = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[4];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -3593,7 +3626,7 @@ test_posonly_keywords_kwonly_opt2(PyObject *module, PyObject *const *args, Py_ss
 static PyObject *
 test_posonly_keywords_kwonly_opt2_impl(PyObject *module, PyObject *a,
                                        PyObject *b, PyObject *c, PyObject *d)
-/*[clinic end generated code: output=827a349e36e89c82 input=68d01d7c0f6dafb0]*/
+/*[clinic end generated code: output=aeaa2141ebe67c5b input=68d01d7c0f6dafb0]*/
 
 
 /*[clinic input]
@@ -3654,7 +3687,6 @@ test_posonly_keywords_opt_kwonly_opt(PyObject *module, PyObject *const *args, Py
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[5];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     PyObject *a;
     PyObject *b;
@@ -3662,8 +3694,12 @@ test_posonly_keywords_opt_kwonly_opt(PyObject *module, PyObject *const *args, Py
     PyObject *d = Py_None;
     PyObject *e = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[5];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -3700,7 +3736,7 @@ static PyObject *
 test_posonly_keywords_opt_kwonly_opt_impl(PyObject *module, PyObject *a,
                                           PyObject *b, PyObject *c,
                                           PyObject *d, PyObject *e)
-/*[clinic end generated code: output=bcb0088555123966 input=d0883d45876f186c]*/
+/*[clinic end generated code: output=7cd4e4da12d9c0e2 input=d0883d45876f186c]*/
 
 
 /*[clinic input]
@@ -3761,7 +3797,6 @@ test_posonly_keywords_opt2_kwonly_opt(PyObject *module, PyObject *const *args, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[5];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *a;
     PyObject *b = Py_None;
@@ -3769,8 +3804,12 @@ test_posonly_keywords_opt2_kwonly_opt(PyObject *module, PyObject *const *args, P
     PyObject *d = Py_None;
     PyObject *e = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[5];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -3812,7 +3851,7 @@ static PyObject *
 test_posonly_keywords_opt2_kwonly_opt_impl(PyObject *module, PyObject *a,
                                            PyObject *b, PyObject *c,
                                            PyObject *d, PyObject *e)
-/*[clinic end generated code: output=a22d1276d4c2c9c7 input=c95e2e1ec93035ad]*/
+/*[clinic end generated code: output=979dcff3e9391fe3 input=c95e2e1ec93035ad]*/
 
 
 /*[clinic input]
@@ -3875,7 +3914,6 @@ test_posonly_opt_keywords_opt_kwonly_opt(PyObject *module, PyObject *const *args
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[6];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *a;
     PyObject *b = Py_None;
@@ -3884,8 +3922,12 @@ test_posonly_opt_keywords_opt_kwonly_opt(PyObject *module, PyObject *const *args
     PyObject *e = Py_None;
     PyObject *f = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 4 || !args) {
+        PyObject *argsbuf[6];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -3934,7 +3976,7 @@ test_posonly_opt_keywords_opt_kwonly_opt_impl(PyObject *module, PyObject *a,
                                               PyObject *b, PyObject *c,
                                               PyObject *d, PyObject *e,
                                               PyObject *f)
-/*[clinic end generated code: output=ebdbe695ee85a2ea input=9914857713c5bbf8]*/
+/*[clinic end generated code: output=d5853e9e14ace140 input=9914857713c5bbf8]*/
 
 /*[clinic input]
 test_keyword_only_parameter
@@ -3987,12 +4029,15 @@ test_keyword_only_parameter(PyObject *module, PyObject *const *args, Py_ssize_t
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyBytesObject *co_lnotab = (PyBytesObject *)self->co_lnotab;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 0, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 0 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 0, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -4013,7 +4058,7 @@ test_keyword_only_parameter(PyObject *module, PyObject *const *args, Py_ssize_t
 
 static PyObject *
 test_keyword_only_parameter_impl(PyObject *module, PyBytesObject *co_lnotab)
-/*[clinic end generated code: output=bcad654ee66b0972 input=303df5046c7e37a3]*/
+/*[clinic end generated code: output=f0989832d88a0c50 input=303df5046c7e37a3]*/
 
 
 /*[clinic input]
@@ -4350,8 +4395,8 @@ test_vararg(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject * const *fastargs;
+    PyObject *argsbuf[1];
     PyObject *a;
     PyObject *__clinic_args = NULL;
 
@@ -4378,7 +4423,7 @@ test_vararg(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
 
 static PyObject *
 test_vararg_impl(PyObject *module, PyObject *a, PyObject *args)
-/*[clinic end generated code: output=17ba625cdd0369c1 input=7448995636d9186a]*/
+/*[clinic end generated code: output=519897b6e9e40f7f input=7448995636d9186a]*/
 
 /*[clinic input]
 test_vararg_with_default
@@ -4433,9 +4478,9 @@ test_vararg_with_default(PyObject *module, PyObject *const *args, Py_ssize_t nar
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject * const *fastargs;
     Py_ssize_t noptargs = Py_MIN(nargs, 1) + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
+    PyObject *argsbuf[2];
     PyObject *a;
     PyObject *__clinic_args = NULL;
     int b = 0;
@@ -4472,7 +4517,7 @@ test_vararg_with_default(PyObject *module, PyObject *const *args, Py_ssize_t nar
 static PyObject *
 test_vararg_with_default_impl(PyObject *module, PyObject *a, PyObject *args,
                               int b)
-/*[clinic end generated code: output=3f2b06ab08d5d0be input=3a0f9f557ce1f712]*/
+/*[clinic end generated code: output=8eca2cdb3b35589e input=3a0f9f557ce1f712]*/
 
 /*[clinic input]
 test_vararg_with_only_defaults
@@ -4527,9 +4572,9 @@ test_vararg_with_only_defaults(PyObject *module, PyObject *const *args, Py_ssize
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject * const *fastargs;
     Py_ssize_t noptargs = 0 + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
+    PyObject *argsbuf[2];
     PyObject *__clinic_args = NULL;
     int b = 0;
     PyObject *c = " ";
@@ -4569,7 +4614,7 @@ test_vararg_with_only_defaults(PyObject *module, PyObject *const *args, Py_ssize
 static PyObject *
 test_vararg_with_only_defaults_impl(PyObject *module, PyObject *args, int b,
                                     PyObject *c)
-/*[clinic end generated code: output=f46666f0b1bf86b9 input=6983e66817f82924]*/
+/*[clinic end generated code: output=2207b14afed5c6a8 input=6983e66817f82924]*/
 
 /*[clinic input]
 test_paramname_module
@@ -4619,11 +4664,14 @@ test_paramname_module(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *mod;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -4636,7 +4684,7 @@ test_paramname_module(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
 
 static PyObject *
 test_paramname_module_impl(PyObject *module, PyObject *mod)
-/*[clinic end generated code: output=b979bb1c03b16911 input=afefe259667f13ba]*/
+/*[clinic end generated code: output=a6d780fe909bf3ce input=afefe259667f13ba]*/
 
 /*[clinic input]
 mangle1
@@ -4699,7 +4747,6 @@ mangle1(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwn
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[9];
     PyObject *__clinic_args;
     PyObject *__clinic_kwnames;
     PyObject *__clinic_return_value;
@@ -4710,8 +4757,12 @@ mangle1(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwn
     PyObject *__clinic_nargs;
     PyObject *__clinic_noptargs;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 9, /*maxpos*/ 9, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 9 > nargs || nargs > 9 || !args) {
+        PyObject *argsbuf[9];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 9, /*maxpos*/ 9, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -4735,7 +4786,7 @@ mangle1_impl(PyObject *module, PyObject *args, PyObject *kwnames,
              PyObject *return_value, PyObject *_keywords, PyObject *_parser,
              PyObject *argsbuf, PyObject *fastargs, PyObject *nargs,
              PyObject *noptargs)
-/*[clinic end generated code: output=8993a3111845dfc3 input=a3ed51bdedf8a3c7]*/
+/*[clinic end generated code: output=af6909c417eacdc7 input=a3ed51bdedf8a3c7]*/
 
 /*[clinic input]
 mangle2
@@ -4789,13 +4840,16 @@ mangle2(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwn
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     PyObject *__clinic_args;
     PyObject *__clinic_kwargs;
     PyObject *__clinic_return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 3 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -4811,7 +4865,7 @@ mangle2(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwn
 static PyObject *
 mangle2_impl(PyObject *module, PyObject *args, PyObject *kwargs,
              PyObject *return_value)
-/*[clinic end generated code: output=bbbe696e52e0267f input=391766fee51bad7a]*/
+/*[clinic end generated code: output=b0d5a18afbbee278 input=391766fee51bad7a]*/
 
 
 /*[clinic input]
@@ -4863,11 +4917,14 @@ Test_cls_with_param(PyObject *self, PyTypeObject *cls, PyObject *const *args, Py
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int a;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -4883,7 +4940,7 @@ Test_cls_with_param(PyObject *self, PyTypeObject *cls, PyObject *const *args, Py
 
 static PyObject *
 Test_cls_with_param_impl(TestObj *self, PyTypeObject *cls, int a)
-/*[clinic end generated code: output=bd3883003f57d02b input=af158077bd237ef9]*/
+/*[clinic end generated code: output=4628b5b5af2b973c input=af158077bd237ef9]*/
 
 
 /*[clinic input]
@@ -5211,13 +5268,19 @@ Test___init__(PyObject *self, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     PyObject *a;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 1 > nargs || nargs > 1) {
+        PyObject *argsbuf[1];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -5230,7 +5293,7 @@ Test___init__(PyObject *self, PyObject *args, PyObject *kwargs)
 
 static int
 Test___init___impl(TestObj *self, PyObject *a)
-/*[clinic end generated code: output=5c1e743f6a2a0b8b input=a8f9222a6ab35c59]*/
+/*[clinic end generated code: output=5f136ad9ec9f93bf input=a8f9222a6ab35c59]*/
 
 
 /*[clinic input]
@@ -5547,11 +5610,14 @@ mangled_c_keyword_identifier(PyObject *module, PyObject *const *args, Py_ssize_t
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int int_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -5567,7 +5633,7 @@ mangled_c_keyword_identifier(PyObject *module, PyObject *const *args, Py_ssize_t
 
 static PyObject *
 mangled_c_keyword_identifier_impl(PyObject *module, int int_value)
-/*[clinic end generated code: output=49365b3b96b23980 input=060876448ab567a2]*/
+/*[clinic end generated code: output=51799e47be345821 input=060876448ab567a2]*/
 
 
 /*[clinic input]
@@ -5808,12 +5874,15 @@ fn_with_default_binop_expr(PyObject *module, PyObject *const *args, Py_ssize_t n
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *arg = CONST_A + CONST_B;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -5830,7 +5899,7 @@ fn_with_default_binop_expr(PyObject *module, PyObject *const *args, Py_ssize_t n
 
 static PyObject *
 fn_with_default_binop_expr_impl(PyObject *module, PyObject *arg)
-/*[clinic end generated code: output=6613a7a96537bcf2 input=1b55c8ae68d89453]*/
+/*[clinic end generated code: output=90d2e18944a01490 input=1b55c8ae68d89453]*/
 
 
 /*[python input]
@@ -5900,11 +5969,14 @@ docstr_fallback_to_converter_default(PyObject *module, PyObject *const *args, Py
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     str a;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -5919,7 +5991,7 @@ docstr_fallback_to_converter_default(PyObject *module, PyObject *const *args, Py
 
 static PyObject *
 docstr_fallback_to_converter_default_impl(PyObject *module, str a)
-/*[clinic end generated code: output=4405b7050a5f6fb9 input=0cbe6a4d24bc2274]*/
+/*[clinic end generated code: output=1479b7898a3c0bea input=0cbe6a4d24bc2274]*/
 
 
 /*[clinic input]
diff --git a/Lib/test/test_clinic.py b/Lib/test/test_clinic.py
index f8d9b0af8f92ec..896f05416de80d 100644
--- a/Lib/test/test_clinic.py
+++ b/Lib/test/test_clinic.py
@@ -2706,7 +2706,7 @@ def test_cli_force(self):
             # Verify by checking the checksum.
             checksum = (
                 "/*[clinic end generated code: "
-                "output=a2957bc4d43a3c2f input=9543a8d2da235301]*/\n"
+                "output=7fc6e32dbea430e9 input=9543a8d2da235301]*/\n"
             )
             with open(fn, encoding='utf-8') as f:
                 generated = f.read()
diff --git a/Misc/NEWS.d/next/Core_and_Builtins/2025-07-16-14-44-09.gh-issue-136681.h1s2fH.rst b/Misc/NEWS.d/next/Core_and_Builtins/2025-07-16-14-44-09.gh-issue-136681.h1s2fH.rst
new file mode 100644
index 00000000000000..bc293f82daee22
--- /dev/null
+++ b/Misc/NEWS.d/next/Core_and_Builtins/2025-07-16-14-44-09.gh-issue-136681.h1s2fH.rst
@@ -0,0 +1,2 @@
+Optimize calling builtins, accepting positional or keyword arguments in case
+no keyword arguments provided.  Patch by Sergey B Kirpichev.
diff --git a/Modules/_ctypes/clinic/_ctypes.c.h b/Modules/_ctypes/clinic/_ctypes.c.h
index cf2e3fa21072ae..b67e275dab73da 100644
--- a/Modules/_ctypes/clinic/_ctypes.c.h
+++ b/Modules/_ctypes/clinic/_ctypes.c.h
@@ -105,11 +105,14 @@ CDataType_from_address(PyObject *type, PyTypeObject *cls, PyObject *const *args,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -152,12 +155,15 @@ CDataType_from_buffer(PyObject *type, PyTypeObject *cls, PyObject *const *args,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject *obj;
     Py_ssize_t offset = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -216,12 +222,15 @@ CDataType_from_buffer_copy(PyObject *type, PyTypeObject *cls, PyObject *const *a
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_buffer buffer = {NULL, NULL};
     Py_ssize_t offset = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -287,12 +296,15 @@ CDataType_in_dll(PyObject *type, PyTypeObject *cls, PyObject *const *args, Py_ss
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject *dll;
     const char *name;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -345,11 +357,14 @@ CDataType_from_param(PyObject *type, PyTypeObject *cls, PyObject *const *args, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -389,11 +404,14 @@ PyCPointerType_set_type(PyObject *self, PyTypeObject *cls, PyObject *const *args
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *type;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -434,11 +452,14 @@ PyCPointerType_from_param(PyObject *type, PyTypeObject *cls, PyObject *const *ar
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -577,11 +598,14 @@ c_wchar_p_from_param(PyObject *type, PyTypeObject *cls, PyObject *const *args, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -620,11 +644,14 @@ c_char_p_from_param(PyObject *type, PyTypeObject *cls, PyObject *const *args, Py
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -663,11 +690,14 @@ c_void_p_from_param(PyObject *type, PyTypeObject *cls, PyObject *const *args, Py
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -708,11 +738,14 @@ PyCSimpleType_from_param(PyObject *type, PyTypeObject *cls, PyObject *const *arg
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1042,4 +1075,4 @@ Simple_from_outparm(PyObject *self, PyTypeObject *cls, PyObject *const *args, Py
     }
     return Simple_from_outparm_impl(self, cls);
 }
-/*[clinic end generated code: output=536c9bcf4e05913e input=a9049054013a1b77]*/
+/*[clinic end generated code: output=602847ca33880824 input=a9049054013a1b77]*/
diff --git a/Modules/_ctypes/clinic/cfield.c.h b/Modules/_ctypes/clinic/cfield.c.h
index 355e69803b1de2..752bdbb49a1148 100644
--- a/Modules/_ctypes/clinic/cfield.c.h
+++ b/Modules/_ctypes/clinic/cfield.c.h
@@ -46,10 +46,10 @@ PyCField_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[8];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 6;
+    PyObject *argsbuf[8];
     PyObject *name;
     PyObject *proto;
     Py_ssize_t byte_size;
@@ -126,4 +126,4 @@ PyCField_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=7eb1621e22ea2e05 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=475886f511de1c55 input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/_iomodule.c.h b/Modules/_io/clinic/_iomodule.c.h
index 90b80af3018fb0..8c2dd0f2ddddf3 100644
--- a/Modules/_io/clinic/_iomodule.c.h
+++ b/Modules/_io/clinic/_iomodule.c.h
@@ -166,7 +166,6 @@ _io_open(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[8];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *file;
     const char *mode = "r";
@@ -177,8 +176,12 @@ _io_open(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
     int closefd = 1;
     PyObject *opener = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 8, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 8 || !args) {
+        PyObject *argsbuf[8];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 8, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -392,11 +395,14 @@ _io_open_code(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *path;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -410,4 +416,4 @@ _io_open_code(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=7a8e032c0424bce2 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=133ce0840572cd5c input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/bufferedio.c.h b/Modules/_io/clinic/bufferedio.c.h
index b7c0ca2c4b919b..87a9a22ebeafe7 100644
--- a/Modules/_io/clinic/bufferedio.c.h
+++ b/Modules/_io/clinic/bufferedio.c.h
@@ -148,11 +148,14 @@ _io__BufferedIOBase_read(PyObject *self, PyTypeObject *cls, PyObject *const *arg
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int size = -1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -203,11 +206,14 @@ _io__BufferedIOBase_read1(PyObject *self, PyTypeObject *cls, PyObject *const *ar
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int size = -1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -261,11 +267,14 @@ _io__BufferedIOBase_write(PyObject *self, PyTypeObject *cls, PyObject *const *ar
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *b;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -917,11 +926,14 @@ _io__Buffered_truncate(PyObject *self, PyTypeObject *cls, PyObject *const *args,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *pos = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -979,15 +991,21 @@ _io_BufferedReader___init__(PyObject *self, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 1;
     PyObject *raw;
     Py_ssize_t buffer_size = DEFAULT_BUFFER_SIZE;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 1 > nargs || nargs > 2) {
+        PyObject *argsbuf[2];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -1059,15 +1077,21 @@ _io_BufferedWriter___init__(PyObject *self, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 1;
     PyObject *raw;
     Py_ssize_t buffer_size = DEFAULT_BUFFER_SIZE;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 1 > nargs || nargs > 2) {
+        PyObject *argsbuf[2];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -1231,15 +1255,21 @@ _io_BufferedRandom___init__(PyObject *self, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 1;
     PyObject *raw;
     Py_ssize_t buffer_size = DEFAULT_BUFFER_SIZE;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 1 > nargs || nargs > 2) {
+        PyObject *argsbuf[2];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -1265,4 +1295,4 @@ _io_BufferedRandom___init__(PyObject *self, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=3ee17211d2010462 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=7701e12cbd0607f2 input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/bytesio.c.h b/Modules/_io/clinic/bytesio.c.h
index 6595dc937bbcf0..1609e07bbd4992 100644
--- a/Modules/_io/clinic/bytesio.c.h
+++ b/Modules/_io/clinic/bytesio.c.h
@@ -614,14 +614,20 @@ _io_BytesIO___init__(PyObject *self, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 0;
     PyObject *initvalue = NULL;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 0 > nargs || nargs > 1) {
+        PyObject *argsbuf[1];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -637,4 +643,4 @@ _io_BytesIO___init__(PyObject *self, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=daa81dfdae5ccc57 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=20afe423564a2406 input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/fileio.c.h b/Modules/_io/clinic/fileio.c.h
index 04870b1c890361..edd6d938e3650c 100644
--- a/Modules/_io/clinic/fileio.c.h
+++ b/Modules/_io/clinic/fileio.c.h
@@ -87,7 +87,6 @@ _io_FileIO___init__(PyObject *self, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 1;
@@ -96,8 +95,15 @@ _io_FileIO___init__(PyObject *self, PyObject *args, PyObject *kwargs)
     int closefd = 1;
     PyObject *opener = Py_None;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 1 > nargs || nargs > 4) {
+        PyObject *argsbuf[4];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -241,11 +247,14 @@ _io_FileIO_readinto(PyObject *self, PyTypeObject *cls, PyObject *const *args, Py
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_buffer buffer = {NULL, NULL};
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -326,11 +335,14 @@ _io_FileIO_read(PyObject *self, PyTypeObject *cls, PyObject *const *args, Py_ssi
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t size = -1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -380,11 +392,14 @@ _io_FileIO_write(PyObject *self, PyTypeObject *cls, PyObject *const *args, Py_ss
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_buffer b = {NULL, NULL};
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -501,11 +516,14 @@ _io_FileIO_truncate(PyObject *self, PyTypeObject *cls, PyObject *const *args, Py
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *posobj = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -543,4 +561,4 @@ _io_FileIO_isatty(PyObject *self, PyObject *Py_UNUSED(ignored))
 #ifndef _IO_FILEIO_TRUNCATE_METHODDEF
     #define _IO_FILEIO_TRUNCATE_METHODDEF
 #endif /* !defined(_IO_FILEIO_TRUNCATE_METHODDEF) */
-/*[clinic end generated code: output=1902fac9e39358aa input=a9049054013a1b77]*/
+/*[clinic end generated code: output=a3bc038dddb6e178 input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/iobase.c.h b/Modules/_io/clinic/iobase.c.h
index 402448545dfc51..879c2e37900030 100644
--- a/Modules/_io/clinic/iobase.c.h
+++ b/Modules/_io/clinic/iobase.c.h
@@ -52,12 +52,15 @@ _io__IOBase_seek(PyObject *self, PyTypeObject *cls, PyObject *const *args, Py_ss
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     int offset;
     int whence = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -130,11 +133,14 @@ _io__IOBase_truncate(PyObject *self, PyTypeObject *cls, PyObject *const *args, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *size = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -443,4 +449,4 @@ _io__RawIOBase_readall(PyObject *self, PyObject *Py_UNUSED(ignored))
 {
     return _io__RawIOBase_readall_impl(self);
 }
-/*[clinic end generated code: output=9359e74d95534bef input=a9049054013a1b77]*/
+/*[clinic end generated code: output=36b5819be0d0c4af input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/stringio.c.h b/Modules/_io/clinic/stringio.c.h
index 83165e5f7ad08b..7d9cd8aed35db3 100644
--- a/Modules/_io/clinic/stringio.c.h
+++ b/Modules/_io/clinic/stringio.c.h
@@ -329,15 +329,21 @@ _io_StringIO___init__(PyObject *self, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 0;
     PyObject *value = NULL;
     PyObject *newline_obj = NULL;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 0 > nargs || nargs > 2) {
+        PyObject *argsbuf[2];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -550,4 +556,4 @@ _io_StringIO_newlines_get(PyObject *self, void *Py_UNUSED(context))
 
     return return_value;
 }
-/*[clinic end generated code: output=bccc25ef8e6ce9ef input=a9049054013a1b77]*/
+/*[clinic end generated code: output=24f775f7c108dee4 input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/textio.c.h b/Modules/_io/clinic/textio.c.h
index 128a5ad1678f26..c0969244711516 100644
--- a/Modules/_io/clinic/textio.c.h
+++ b/Modules/_io/clinic/textio.c.h
@@ -67,11 +67,14 @@ _io__TextIOBase_read(PyObject *self, PyTypeObject *cls, PyObject *const *args, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int size = -1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -122,11 +125,14 @@ _io__TextIOBase_readline(PyObject *self, PyTypeObject *cls, PyObject *const *arg
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int size = -1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -177,11 +183,14 @@ _io__TextIOBase_write(PyObject *self, PyTypeObject *cls, PyObject *const *args,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     const char *s;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -339,7 +348,6 @@ _io_IncrementalNewlineDecoder___init__(PyObject *self, PyObject *args, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 2;
@@ -347,8 +355,15 @@ _io_IncrementalNewlineDecoder___init__(PyObject *self, PyObject *args, PyObject
     int translate;
     PyObject *errors = NULL;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 2 > nargs || nargs > 3) {
+        PyObject *argsbuf[3];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -411,13 +426,16 @@ _io_IncrementalNewlineDecoder_decode(PyObject *self, PyObject *const *args, Py_s
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *input;
     int final = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -563,7 +581,6 @@ _io_TextIOWrapper___init__(PyObject *self, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[6];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 1;
@@ -574,8 +591,15 @@ _io_TextIOWrapper___init__(PyObject *self, PyObject *args, PyObject *kwargs)
     int line_buffering = 0;
     int write_through = 0;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 6, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 1 > nargs || nargs > 6) {
+        PyObject *argsbuf[6];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 6, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -704,7 +728,6 @@ _io_TextIOWrapper_reconfigure(PyObject *self, PyObject *const *args, Py_ssize_t
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[5];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *encoding = Py_None;
     PyObject *errors = Py_None;
@@ -712,8 +735,12 @@ _io_TextIOWrapper_reconfigure(PyObject *self, PyObject *const *args, Py_ssize_t
     PyObject *line_buffering_obj = Py_None;
     PyObject *write_through_obj = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 0, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 0 || !args) {
+        PyObject *argsbuf[5];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 0, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1312,4 +1339,4 @@ _io_TextIOWrapper__CHUNK_SIZE_set(PyObject *self, PyObject *value, void *Py_UNUS
 
     return return_value;
 }
-/*[clinic end generated code: output=30404271a1151056 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=f2a04050c9859a6b input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/winconsoleio.c.h b/Modules/_io/clinic/winconsoleio.c.h
index 7af5923b6c1747..0e42de94ba5ccb 100644
--- a/Modules/_io/clinic/winconsoleio.c.h
+++ b/Modules/_io/clinic/winconsoleio.c.h
@@ -86,7 +86,6 @@ _io__WindowsConsoleIO___init__(PyObject *self, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 1;
@@ -95,8 +94,15 @@ _io__WindowsConsoleIO___init__(PyObject *self, PyObject *args, PyObject *kwargs)
     int closefd = 1;
     PyObject *opener = Py_None;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 1 > nargs || nargs > 4) {
+        PyObject *argsbuf[4];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -239,11 +245,14 @@ _io__WindowsConsoleIO_readinto(PyObject *self, PyTypeObject *cls, PyObject *cons
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_buffer buffer = {NULL, NULL};
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -324,11 +333,14 @@ _io__WindowsConsoleIO_read(PyObject *self, PyTypeObject *cls, PyObject *const *a
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t size = -1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -382,11 +394,14 @@ _io__WindowsConsoleIO_write(PyObject *self, PyTypeObject *cls, PyObject *const *
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_buffer b = {NULL, NULL};
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -463,4 +478,4 @@ _io__WindowsConsoleIO_isatty(PyObject *self, PyObject *Py_UNUSED(ignored))
 #ifndef _IO__WINDOWSCONSOLEIO_ISATTY_METHODDEF
     #define _IO__WINDOWSCONSOLEIO_ISATTY_METHODDEF
 #endif /* !defined(_IO__WINDOWSCONSOLEIO_ISATTY_METHODDEF) */
-/*[clinic end generated code: output=ce50bcd905f1f213 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=56b2d6cc532fd7f3 input=a9049054013a1b77]*/
diff --git a/Modules/_multiprocessing/clinic/semaphore.c.h b/Modules/_multiprocessing/clinic/semaphore.c.h
index 6b1c0092ce4816..299a82ac9610b6 100644
--- a/Modules/_multiprocessing/clinic/semaphore.c.h
+++ b/Modules/_multiprocessing/clinic/semaphore.c.h
@@ -55,13 +55,16 @@ _multiprocessing_SemLock_acquire(PyObject *self, PyObject *const *args, Py_ssize
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     int blocking = 1;
     PyObject *timeout_obj = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -163,13 +166,16 @@ _multiprocessing_SemLock_acquire(PyObject *self, PyObject *const *args, Py_ssize
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     int blocking = 1;
     PyObject *timeout_obj = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -262,7 +268,6 @@ _multiprocessing_SemLock(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[5];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     int kind;
@@ -271,8 +276,15 @@ _multiprocessing_SemLock(PyTypeObject *type, PyObject *args, PyObject *kwargs)
     const char *name;
     int unlink;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 5, /*maxpos*/ 5, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 5 > nargs || nargs > 5) {
+        PyObject *argsbuf[5];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 5, /*maxpos*/ 5, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -582,4 +594,4 @@ _multiprocessing_SemLock___exit__(PyObject *self, PyObject *const *args, Py_ssiz
 #ifndef _MULTIPROCESSING_SEMLOCK___EXIT___METHODDEF
     #define _MULTIPROCESSING_SEMLOCK___EXIT___METHODDEF
 #endif /* !defined(_MULTIPROCESSING_SEMLOCK___EXIT___METHODDEF) */
-/*[clinic end generated code: output=d1e349d4ee3d4bbf input=a9049054013a1b77]*/
+/*[clinic end generated code: output=434e8bb58deacf75 input=a9049054013a1b77]*/
diff --git a/Modules/_sqlite/clinic/connection.c.h b/Modules/_sqlite/clinic/connection.c.h
index f0e9fdb889413f..131cd439303cef 100644
--- a/Modules/_sqlite/clinic/connection.c.h
+++ b/Modules/_sqlite/clinic/connection.c.h
@@ -47,7 +47,6 @@ pysqlite_connection_init(PyObject *self, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[9];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 1;
@@ -61,8 +60,15 @@ pysqlite_connection_init(PyObject *self, PyObject *args, PyObject *kwargs)
     int uri = 0;
     enum autocommit_mode autocommit = LEGACY_TRANSACTION_CONTROL;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 1 > nargs || nargs > 1) {
+        PyObject *argsbuf[9];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -188,12 +194,15 @@ pysqlite_connection_cursor(PyObject *self, PyObject *const *args, Py_ssize_t nar
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *factory = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -263,7 +272,6 @@ blobopen(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObject *kwna
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[5];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 3;
     const char *table;
     const char *col;
@@ -271,8 +279,12 @@ blobopen(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObject *kwna
     int readonly = 0;
     const char *name = "main";
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 3 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[5];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -443,15 +455,18 @@ pysqlite_connection_create_function(PyObject *self, PyTypeObject *cls, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 3;
     const char *name;
     int narg;
     PyObject *func;
     int deterministic = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 3 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[4];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -529,13 +544,16 @@ create_window_function(PyObject *self, PyTypeObject *cls, PyObject *const *args,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     const char *name;
     int num_params;
     PyObject *aggregate_class;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 3 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -597,13 +615,16 @@ pysqlite_connection_create_aggregate(PyObject *self, PyTypeObject *cls, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     const char *name;
     int n_arg;
     PyObject *aggregate_class;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 3 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -662,11 +683,14 @@ pysqlite_connection_set_authorizer(PyObject *self, PyTypeObject *cls, PyObject *
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *callable;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -732,12 +756,15 @@ pysqlite_connection_set_progress_handler(PyObject *self, PyTypeObject *cls, PyOb
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject *callable;
     int n;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -783,11 +810,14 @@ pysqlite_connection_set_trace_callback(PyObject *self, PyTypeObject *cls, PyObje
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *callable;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -878,13 +908,16 @@ pysqlite_connection_load_extension(PyObject *self, PyObject *const *args, Py_ssi
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     const char *extension_name;
     const char *entrypoint = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1093,12 +1126,15 @@ pysqlite_connection_iterdump(PyObject *self, PyObject *const *args, Py_ssize_t n
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *filter = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 0, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 0 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 0, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1160,7 +1196,6 @@ pysqlite_connection_backup(PyObject *self, PyObject *const *args, Py_ssize_t nar
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[5];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     pysqlite_Connection *target;
     int pages = -1;
@@ -1168,8 +1203,12 @@ pysqlite_connection_backup(PyObject *self, PyObject *const *args, Py_ssize_t nar
     const char *name = "main";
     double sleep = 0.25;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[5];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1263,12 +1302,15 @@ pysqlite_connection_create_collation(PyObject *self, PyTypeObject *cls, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     const char *name;
     PyObject *callable;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1345,12 +1387,15 @@ serialize(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObject *kwn
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     const char *name = "main";
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 0, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 0 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 0, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1437,13 +1482,16 @@ deserialize(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObject *k
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     Py_buffer data = {NULL, NULL};
     const char *name = "main";
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1722,4 +1770,4 @@ getconfig(PyObject *self, PyObject *arg)
 #ifndef DESERIALIZE_METHODDEF
     #define DESERIALIZE_METHODDEF
 #endif /* !defined(DESERIALIZE_METHODDEF) */
-/*[clinic end generated code: output=6cb96e557133d553 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=196303981a4ec26d input=a9049054013a1b77]*/
diff --git a/Modules/_sqlite/clinic/cursor.c.h b/Modules/_sqlite/clinic/cursor.c.h
index 350577f488df4b..c4a0ed019fc0a9 100644
--- a/Modules/_sqlite/clinic/cursor.c.h
+++ b/Modules/_sqlite/clinic/cursor.c.h
@@ -214,12 +214,15 @@ pysqlite_cursor_fetchmany(PyObject *self, PyObject *const *args, Py_ssize_t narg
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     int maxrows = ((pysqlite_Cursor *)self)->arraysize;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -329,4 +332,4 @@ pysqlite_cursor_close(PyObject *self, PyObject *Py_UNUSED(ignored))
 {
     return pysqlite_cursor_close_impl((pysqlite_Cursor *)self);
 }
-/*[clinic end generated code: output=d05c7cbbc8bcab26 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=fce9132d1593b58c input=a9049054013a1b77]*/
diff --git a/Modules/_sqlite/clinic/module.c.h b/Modules/_sqlite/clinic/module.c.h
index 82ecd3eea1b39b..92e3eb2774d4be 100644
--- a/Modules/_sqlite/clinic/module.c.h
+++ b/Modules/_sqlite/clinic/module.c.h
@@ -51,11 +51,14 @@ pysqlite_complete_statement(PyObject *module, PyObject *const *args, Py_ssize_t
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     const char *statement;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -211,4 +214,4 @@ pysqlite_adapt(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=17c4e031680a5168 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=588b7ca6f4837c6e input=a9049054013a1b77]*/
diff --git a/Modules/_sre/clinic/sre.c.h b/Modules/_sre/clinic/sre.c.h
index d2f25a71495cda..8a45d837c9ce39 100644
--- a/Modules/_sre/clinic/sre.c.h
+++ b/Modules/_sre/clinic/sre.c.h
@@ -209,14 +209,17 @@ _sre_SRE_Pattern_match(PyObject *self, PyTypeObject *cls, PyObject *const *args,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *string;
     Py_ssize_t pos = 0;
     Py_ssize_t endpos = PY_SSIZE_T_MAX;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -305,14 +308,17 @@ _sre_SRE_Pattern_fullmatch(PyObject *self, PyTypeObject *cls, PyObject *const *a
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *string;
     Py_ssize_t pos = 0;
     Py_ssize_t endpos = PY_SSIZE_T_MAX;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -403,14 +409,17 @@ _sre_SRE_Pattern_search(PyObject *self, PyTypeObject *cls, PyObject *const *args
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *string;
     Py_ssize_t pos = 0;
     Py_ssize_t endpos = PY_SSIZE_T_MAX;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -498,14 +507,17 @@ _sre_SRE_Pattern_findall(PyObject *self, PyObject *const *args, Py_ssize_t nargs
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *string;
     Py_ssize_t pos = 0;
     Py_ssize_t endpos = PY_SSIZE_T_MAX;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -596,14 +608,17 @@ _sre_SRE_Pattern_finditer(PyObject *self, PyTypeObject *cls, PyObject *const *ar
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *string;
     Py_ssize_t pos = 0;
     Py_ssize_t endpos = PY_SSIZE_T_MAX;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -691,14 +706,17 @@ _sre_SRE_Pattern_scanner(PyObject *self, PyTypeObject *cls, PyObject *const *arg
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *string;
     Py_ssize_t pos = 0;
     Py_ssize_t endpos = PY_SSIZE_T_MAX;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -786,13 +804,16 @@ _sre_SRE_Pattern_split(PyObject *self, PyObject *const *args, Py_ssize_t nargs,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *string;
     Py_ssize_t maxsplit = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -863,14 +884,17 @@ _sre_SRE_Pattern_sub(PyObject *self, PyTypeObject *cls, PyObject *const *args, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     PyObject *repl;
     PyObject *string;
     Py_ssize_t count = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -943,14 +967,17 @@ _sre_SRE_Pattern_subn(PyObject *self, PyTypeObject *cls, PyObject *const *args,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     PyObject *repl;
     PyObject *string;
     Py_ssize_t count = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1099,7 +1126,6 @@ _sre_compile(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[6];
     PyObject *pattern;
     int flags;
     PyObject *code;
@@ -1107,8 +1133,12 @@ _sre_compile(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
     PyObject *groupindex;
     PyObject *indexgroup;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 6, /*maxpos*/ 6, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 6 > nargs || nargs > 6 || !args) {
+        PyObject *argsbuf[6];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 6, /*maxpos*/ 6, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1232,11 +1262,14 @@ _sre_SRE_Match_expand(PyObject *self, PyObject *const *args, Py_ssize_t nargs, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *template;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1293,12 +1326,15 @@ _sre_SRE_Match_groups(PyObject *self, PyObject *const *args, Py_ssize_t nargs, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *default_value = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1359,12 +1395,15 @@ _sre_SRE_Match_groupdict(PyObject *self, PyObject *const *args, Py_ssize_t nargs
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *default_value = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1568,4 +1607,4 @@ _sre_SRE_Scanner_search(PyObject *self, PyTypeObject *cls, PyObject *const *args
 #ifndef _SRE_SRE_PATTERN__FAIL_AFTER_METHODDEF
     #define _SRE_SRE_PATTERN__FAIL_AFTER_METHODDEF
 #endif /* !defined(_SRE_SRE_PATTERN__FAIL_AFTER_METHODDEF) */
-/*[clinic end generated code: output=bbf42e1de3bdd3ae input=a9049054013a1b77]*/
+/*[clinic end generated code: output=cf3ff0718767a51e input=a9049054013a1b77]*/
diff --git a/Modules/_ssl/clinic/cert.c.h b/Modules/_ssl/clinic/cert.c.h
index 7e05772e323614..4c172d98ee23d3 100644
--- a/Modules/_ssl/clinic/cert.c.h
+++ b/Modules/_ssl/clinic/cert.c.h
@@ -50,12 +50,15 @@ _ssl_Certificate_public_bytes(PyObject *self, PyObject *const *args, Py_ssize_t
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     int format = PY_SSL_ENCODING_PEM;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -89,4 +92,4 @@ _ssl_Certificate_get_info(PyObject *self, PyObject *Py_UNUSED(ignored))
 {
     return _ssl_Certificate_get_info_impl((PySSLCertificate *)self);
 }
-/*[clinic end generated code: output=bab2dba7dbc1523c input=a9049054013a1b77]*/
+/*[clinic end generated code: output=67ff321bb2bbe1fc input=a9049054013a1b77]*/
diff --git a/Modules/_testcapi/clinic/exceptions.c.h b/Modules/_testcapi/clinic/exceptions.c.h
index cac5d288f437b7..7ea293a5d05b03 100644
--- a/Modules/_testcapi/clinic/exceptions.c.h
+++ b/Modules/_testcapi/clinic/exceptions.c.h
@@ -99,15 +99,18 @@ _testcapi_make_exception_with_doc(PyObject *module, PyObject *const *args, Py_ss
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     const char *name;
     const char *doc = NULL;
     PyObject *base = NULL;
     PyObject *dict = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 4 || !args) {
+        PyObject *argsbuf[4];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -459,4 +462,4 @@ _testcapi_unstable_exc_prep_reraise_star(PyObject *module, PyObject *const *args
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=357caea020348789 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=8a949303d5fddcd5 input=a9049054013a1b77]*/
diff --git a/Modules/_zstd/clinic/_zstdmodule.c.h b/Modules/_zstd/clinic/_zstdmodule.c.h
index 766e1cfa776767..9b5466e354f5b2 100644
--- a/Modules/_zstd/clinic/_zstdmodule.c.h
+++ b/Modules/_zstd/clinic/_zstdmodule.c.h
@@ -193,12 +193,15 @@ _zstd_get_param_bounds(PyObject *module, PyObject *const *args, Py_ssize_t nargs
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     int parameter;
     int is_compress;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -263,11 +266,14 @@ _zstd_get_frame_size(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_buffer frame_buffer = {NULL, NULL};
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -331,11 +337,14 @@ _zstd_get_frame_info(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_buffer frame_buffer = {NULL, NULL};
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -402,12 +411,15 @@ _zstd_set_parameter_types(PyObject *module, PyObject *const *args, Py_ssize_t na
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject *c_parameter_type;
     PyObject *d_parameter_type;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -426,4 +438,4 @@ _zstd_set_parameter_types(PyObject *module, PyObject *const *args, Py_ssize_t na
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=437b084f149e68e5 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=1d5ac08a97c3e63a input=a9049054013a1b77]*/
diff --git a/Modules/_zstd/clinic/compressor.c.h b/Modules/_zstd/clinic/compressor.c.h
index 4f8d93fd9e867c..4776366fa66173 100644
--- a/Modules/_zstd/clinic/compressor.c.h
+++ b/Modules/_zstd/clinic/compressor.c.h
@@ -59,7 +59,6 @@ _zstd_ZstdCompressor_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 0;
@@ -67,8 +66,15 @@ _zstd_ZstdCompressor_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
     PyObject *options = Py_None;
     PyObject *zstd_dict = Py_None;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 0 > nargs || nargs > 3) {
+        PyObject *argsbuf[3];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -147,13 +153,16 @@ _zstd_ZstdCompressor_compress(PyObject *self, PyObject *const *args, Py_ssize_t
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     Py_buffer data = {NULL, NULL};
     int mode = ZSTD_e_continue;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -230,12 +239,15 @@ _zstd_ZstdCompressor_flush(PyObject *self, PyObject *const *args, Py_ssize_t nar
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     int mode = ZSTD_e_end;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -291,4 +303,4 @@ _zstd_ZstdCompressor_set_pledged_input_size(PyObject *self, PyObject *arg)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=c1d5c2cf06a8becd input=a9049054013a1b77]*/
+/*[clinic end generated code: output=2b649c6eff0b70df input=a9049054013a1b77]*/
diff --git a/Modules/_zstd/clinic/decompressor.c.h b/Modules/_zstd/clinic/decompressor.c.h
index c6fdae74ab0447..354906f94ecd5c 100644
--- a/Modules/_zstd/clinic/decompressor.c.h
+++ b/Modules/_zstd/clinic/decompressor.c.h
@@ -58,15 +58,21 @@ _zstd_ZstdDecompressor_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 0;
     PyObject *zstd_dict = Py_None;
     PyObject *options = Py_None;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 0 > nargs || nargs > 2) {
+        PyObject *argsbuf[2];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -181,13 +187,16 @@ _zstd_ZstdDecompressor_decompress(PyObject *self, PyObject *const *args, Py_ssiz
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     Py_buffer data = {NULL, NULL};
     Py_ssize_t max_length = -1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -220,4 +229,4 @@ _zstd_ZstdDecompressor_decompress(PyObject *self, PyObject *const *args, Py_ssiz
 
     return return_value;
 }
-/*[clinic end generated code: output=30c12ef047027ede input=a9049054013a1b77]*/
+/*[clinic end generated code: output=81a858287b4dd329 input=a9049054013a1b77]*/
diff --git a/Modules/_zstd/clinic/zstddict.c.h b/Modules/_zstd/clinic/zstddict.c.h
index 79db85405d6e6b..8ee2ef920a64e5 100644
--- a/Modules/_zstd/clinic/zstddict.c.h
+++ b/Modules/_zstd/clinic/zstddict.c.h
@@ -59,15 +59,21 @@ _zstd_ZstdDict_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 1;
     Py_buffer dict_content = {NULL, NULL};
     int is_raw = 0;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 1 > nargs || nargs > 1) {
+        PyObject *argsbuf[2];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -222,4 +228,4 @@ _zstd_ZstdDict_as_prefix_get(PyObject *self, void *Py_UNUSED(context))
 {
     return _zstd_ZstdDict_as_prefix_get_impl((ZstdDict *)self);
 }
-/*[clinic end generated code: output=4696cbc722e5fdfc input=a9049054013a1b77]*/
+/*[clinic end generated code: output=5c186a6b2d9e1c72 input=a9049054013a1b77]*/
diff --git a/Modules/cjkcodecs/clinic/multibytecodec.c.h b/Modules/cjkcodecs/clinic/multibytecodec.c.h
index b3663180d726e5..195010f898fff6 100644
--- a/Modules/cjkcodecs/clinic/multibytecodec.c.h
+++ b/Modules/cjkcodecs/clinic/multibytecodec.c.h
@@ -58,13 +58,16 @@ _multibytecodec_MultibyteCodec_encode(PyObject *self, PyObject *const *args, Py_
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *input;
     const char *errors = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -147,13 +150,16 @@ _multibytecodec_MultibyteCodec_decode(PyObject *self, PyObject *const *args, Py_
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     Py_buffer input = {NULL, NULL};
     const char *errors = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -237,13 +243,16 @@ _multibytecodec_MultibyteIncrementalEncoder_encode(PyObject *self, PyObject *con
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *input;
     int final = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -369,13 +378,16 @@ _multibytecodec_MultibyteIncrementalDecoder_decode(PyObject *self, PyObject *con
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     Py_buffer input = {NULL, NULL};
     int final = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -607,11 +619,14 @@ _multibytecodec_MultibyteStreamWriter_write(PyObject *self, PyTypeObject *cls, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *strobj;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -652,11 +667,14 @@ _multibytecodec_MultibyteStreamWriter_writelines(PyObject *self, PyTypeObject *c
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *lines;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -696,4 +714,4 @@ PyDoc_STRVAR(_multibytecodec___create_codec__doc__,
 
 #define _MULTIBYTECODEC___CREATE_CODEC_METHODDEF    \
     {"__create_codec", (PyCFunction)_multibytecodec___create_codec, METH_O, _multibytecodec___create_codec__doc__},
-/*[clinic end generated code: output=014f4f6bb9d29594 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=820eded8d96176a2 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_asynciomodule.c.h b/Modules/clinic/_asynciomodule.c.h
index 66953d74213b66..ccbdaf008a6ef4 100644
--- a/Modules/clinic/_asynciomodule.c.h
+++ b/Modules/clinic/_asynciomodule.c.h
@@ -60,14 +60,20 @@ _asyncio_Future___init__(PyObject *self, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 0;
     PyObject *loop = Py_None;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 0, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 0 > nargs || nargs > 0) {
+        PyObject *argsbuf[1];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 0, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -177,11 +183,14 @@ _asyncio_Future_set_result(PyObject *self, PyTypeObject *cls, PyObject *const *a
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *result;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -227,11 +236,14 @@ _asyncio_Future_set_exception(PyObject *self, PyTypeObject *cls, PyObject *const
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *exception;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -292,13 +304,16 @@ _asyncio_Future_add_done_callback(PyObject *self, PyTypeObject *cls, PyObject *c
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *fn;
     PyObject *context = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -348,11 +363,14 @@ _asyncio_Future_remove_done_callback(PyObject *self, PyTypeObject *cls, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *fn;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -413,12 +431,15 @@ _asyncio_Future_cancel(PyObject *self, PyTypeObject *cls, PyObject *const *args,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *msg = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -910,7 +931,6 @@ _asyncio_Task___init__(PyObject *self, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[5];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 1;
@@ -920,8 +940,15 @@ _asyncio_Task___init__(PyObject *self, PyObject *args, PyObject *kwargs)
     PyObject *context = Py_None;
     int eager_start = 0;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 1 > nargs || nargs > 1) {
+        PyObject *argsbuf[5];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -1172,12 +1199,15 @@ _asyncio_Task_cancel(PyObject *self, PyObject *const *args, Py_ssize_t nargs, Py
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *msg = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1312,12 +1342,15 @@ _asyncio_Task_get_stack(PyObject *self, PyTypeObject *cls, PyObject *const *args
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *limit = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 0, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 0 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 0, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1382,13 +1415,16 @@ _asyncio_Task_print_stack(PyObject *self, PyTypeObject *cls, PyObject *const *ar
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *limit = Py_None;
     PyObject *file = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 0, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 0 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 0, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1660,11 +1696,14 @@ _asyncio__register_task(PyObject *module, PyObject *const *args, Py_ssize_t narg
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *task;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1720,11 +1759,14 @@ _asyncio__register_eager_task(PyObject *module, PyObject *const *args, Py_ssize_
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *task;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1780,11 +1822,14 @@ _asyncio__unregister_task(PyObject *module, PyObject *const *args, Py_ssize_t na
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *task;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1840,11 +1885,14 @@ _asyncio__unregister_eager_task(PyObject *module, PyObject *const *args, Py_ssiz
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *task;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1902,12 +1950,15 @@ _asyncio__enter_task(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject *loop;
     PyObject *task;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1966,12 +2017,15 @@ _asyncio__leave_task(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject *loop;
     PyObject *task;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2029,12 +2083,15 @@ _asyncio__swap_current_task(PyObject *module, PyObject *const *args, Py_ssize_t
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject *loop;
     PyObject *task;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2089,12 +2146,15 @@ _asyncio_current_task(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *loop = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2152,12 +2212,15 @@ _asyncio_all_tasks(PyObject *module, PyObject *const *args, Py_ssize_t nargs, Py
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *loop = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2232,4 +2295,4 @@ _asyncio_future_discard_from_awaited_by(PyObject *module, PyObject *const *args,
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=b69948ed810591d9 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=816070642ac7fdfc input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_bisectmodule.c.h b/Modules/clinic/_bisectmodule.c.h
index 314208bc41d0c1..734ef7145d9eb0 100644
--- a/Modules/clinic/_bisectmodule.c.h
+++ b/Modules/clinic/_bisectmodule.c.h
@@ -62,7 +62,6 @@ _bisect_bisect_right(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[5];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     PyObject *a;
     PyObject *x;
@@ -71,8 +70,12 @@ _bisect_bisect_right(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
     PyObject *key = Py_None;
     Py_ssize_t _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 4 || !args) {
+        PyObject *argsbuf[5];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -173,7 +176,6 @@ _bisect_insort_right(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[5];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     PyObject *a;
     PyObject *x;
@@ -181,8 +183,12 @@ _bisect_insort_right(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
     Py_ssize_t hi = -1;
     PyObject *key = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 4 || !args) {
+        PyObject *argsbuf[5];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -281,7 +287,6 @@ _bisect_bisect_left(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[5];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     PyObject *a;
     PyObject *x;
@@ -290,8 +295,12 @@ _bisect_bisect_left(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
     PyObject *key = Py_None;
     Py_ssize_t _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 4 || !args) {
+        PyObject *argsbuf[5];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -392,7 +401,6 @@ _bisect_insort_left(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[5];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     PyObject *a;
     PyObject *x;
@@ -400,8 +408,12 @@ _bisect_insort_left(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
     Py_ssize_t hi = -1;
     PyObject *key = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 4 || !args) {
+        PyObject *argsbuf[5];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -446,4 +458,4 @@ _bisect_insort_left(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=729385c6a23828ab input=a9049054013a1b77]*/
+/*[clinic end generated code: output=9c424acfd9562601 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_bz2module.c.h b/Modules/clinic/_bz2module.c.h
index 2bc6524b6a973b..5e47a7e3d45672 100644
--- a/Modules/clinic/_bz2module.c.h
+++ b/Modules/clinic/_bz2module.c.h
@@ -167,13 +167,16 @@ _bz2_BZ2Decompressor_decompress(PyObject *self, PyObject *const *args, Py_ssize_
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     Py_buffer data = {NULL, NULL};
     Py_ssize_t max_length = -1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -237,4 +240,4 @@ _bz2_BZ2Decompressor(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=552ac6d4c5a101b7 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=c884211c0193bf46 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_codecsmodule.c.h b/Modules/clinic/_codecsmodule.c.h
index b0310325759326..43a1ab54333faf 100644
--- a/Modules/clinic/_codecsmodule.c.h
+++ b/Modules/clinic/_codecsmodule.c.h
@@ -119,14 +119,17 @@ _codecs_encode(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *obj;
     const char *encoding = NULL;
     const char *errors = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -222,14 +225,17 @@ _codecs_decode(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *obj;
     const char *encoding = NULL;
     const char *errors = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2802,4 +2808,4 @@ _codecs_lookup_error(PyObject *module, PyObject *arg)
 #ifndef _CODECS_CODE_PAGE_ENCODE_METHODDEF
     #define _CODECS_CODE_PAGE_ENCODE_METHODDEF
 #endif /* !defined(_CODECS_CODE_PAGE_ENCODE_METHODDEF) */
-/*[clinic end generated code: output=ed13f20dfb09e306 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=063c9d7463875ce0 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_collectionsmodule.c.h b/Modules/clinic/_collectionsmodule.c.h
index b5c315c680e782..a53321b2ec6b77 100644
--- a/Modules/clinic/_collectionsmodule.c.h
+++ b/Modules/clinic/_collectionsmodule.c.h
@@ -492,15 +492,21 @@ deque_init(PyObject *deque, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 0;
     PyObject *iterable = NULL;
     PyObject *maxlenobj = NULL;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 0 > nargs || nargs > 2) {
+        PyObject *argsbuf[2];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -632,4 +638,4 @@ tuplegetter_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=b9d4d647c221cb9f input=a9049054013a1b77]*/
+/*[clinic end generated code: output=72632914874f13bb input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_csv.c.h b/Modules/clinic/_csv.c.h
index 416aeafccf917b..35d9d3f2bfadff 100644
--- a/Modules/clinic/_csv.c.h
+++ b/Modules/clinic/_csv.c.h
@@ -73,11 +73,14 @@ _csv_unregister_dialect(PyObject *module, PyObject *const *args, Py_ssize_t narg
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *name;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -133,11 +136,14 @@ _csv_get_dialect(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *name;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -196,12 +202,15 @@ _csv_field_size_limit(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *new_limit = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -215,4 +224,4 @@ _csv_field_size_limit(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=1fb09d5e7667ad0d input=a9049054013a1b77]*/
+/*[clinic end generated code: output=281c0207c1413670 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_cursesmodule.c.h b/Modules/clinic/_cursesmodule.c.h
index a8c32d6510604a..d1aa038aa05679 100644
--- a/Modules/clinic/_cursesmodule.c.h
+++ b/Modules/clinic/_cursesmodule.c.h
@@ -2719,13 +2719,16 @@ _curses_setupterm(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyO
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     const char *term = NULL;
     int fd = -1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -4450,4 +4453,4 @@ _curses_has_extended_color_support(PyObject *module, PyObject *Py_UNUSED(ignored
 #ifndef _CURSES_ASSUME_DEFAULT_COLORS_METHODDEF
     #define _CURSES_ASSUME_DEFAULT_COLORS_METHODDEF
 #endif /* !defined(_CURSES_ASSUME_DEFAULT_COLORS_METHODDEF) */
-/*[clinic end generated code: output=79ddaae4da3b80df input=a9049054013a1b77]*/
+/*[clinic end generated code: output=41cff5183af41f6a input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_datetimemodule.c.h b/Modules/clinic/_datetimemodule.c.h
index 18e6129fad8a89..94526bdb89e9bd 100644
--- a/Modules/clinic/_datetimemodule.c.h
+++ b/Modules/clinic/_datetimemodule.c.h
@@ -68,15 +68,21 @@ iso_calendar_date_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     int year;
     int week;
     int weekday;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 3 > nargs || nargs > 3) {
+        PyObject *argsbuf[3];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -142,14 +148,17 @@ datetime_date_replace(PyObject *self, PyObject *const *args, Py_ssize_t nargs, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     int year = GET_YEAR(self);
     int month = GET_MONTH(self);
     int day = GET_DAY(self);
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -231,7 +240,6 @@ datetime_time_replace(PyObject *self, PyObject *const *args, Py_ssize_t nargs, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[6];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     int hour = TIME_GET_HOUR(self);
     int minute = TIME_GET_MINUTE(self);
@@ -240,8 +248,12 @@ datetime_time_replace(PyObject *self, PyObject *const *args, Py_ssize_t nargs, P
     PyObject *tzinfo = HASTZINFO(self) ? ((PyDateTime_Time *)self)->tzinfo : Py_None;
     int fold = TIME_GET_FOLD(self);
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 5, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 5 || !args) {
+        PyObject *argsbuf[6];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 5, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -353,12 +365,15 @@ datetime_datetime_now(PyObject *type, PyObject *const *args, Py_ssize_t nargs, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *tz = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -421,7 +436,6 @@ datetime_datetime_replace(PyObject *self, PyObject *const *args, Py_ssize_t narg
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[9];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     int year = GET_YEAR(self);
     int month = GET_MONTH(self);
@@ -433,8 +447,12 @@ datetime_datetime_replace(PyObject *self, PyObject *const *args, Py_ssize_t narg
     PyObject *tzinfo = HASTZINFO(self) ? ((PyDateTime_DateTime *)self)->tzinfo : Py_None;
     int fold = DATE_GET_FOLD(self);
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 8, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 8 || !args) {
+        PyObject *argsbuf[9];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 8, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -524,4 +542,4 @@ datetime_datetime_replace(PyObject *self, PyObject *const *args, Py_ssize_t narg
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=809640e747529c72 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=1ccf699a88b4cc83 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_elementtree.c.h b/Modules/clinic/_elementtree.c.h
index c9e77a4c2b92d8..25b639bab02e33 100644
--- a/Modules/clinic/_elementtree.c.h
+++ b/Modules/clinic/_elementtree.c.h
@@ -38,11 +38,14 @@ _elementtree_Element_append(PyObject *self, PyTypeObject *cls, PyObject *const *
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *subelement;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -196,11 +199,14 @@ _elementtree_Element___setstate__(PyObject *self, PyTypeObject *cls, PyObject *c
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *state;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -240,11 +246,14 @@ _elementtree_Element_extend(PyObject *self, PyTypeObject *cls, PyObject *const *
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *elements;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -298,13 +307,16 @@ _elementtree_Element_find(PyObject *self, PyTypeObject *cls, PyObject *const *ar
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *path;
     PyObject *namespaces = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -364,14 +376,17 @@ _elementtree_Element_findtext(PyObject *self, PyTypeObject *cls, PyObject *const
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *path;
     PyObject *default_value = Py_None;
     PyObject *namespaces = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -436,13 +451,16 @@ _elementtree_Element_findall(PyObject *self, PyTypeObject *cls, PyObject *const
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *path;
     PyObject *namespaces = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -501,13 +519,16 @@ _elementtree_Element_iterfind(PyObject *self, PyTypeObject *cls, PyObject *const
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *path;
     PyObject *namespaces = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -566,13 +587,16 @@ _elementtree_Element_get(PyObject *self, PyObject *const *args, Py_ssize_t nargs
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *key;
     PyObject *default_value = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -631,12 +655,15 @@ _elementtree_Element_iter(PyObject *self, PyTypeObject *cls, PyObject *const *ar
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *tag = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -780,12 +807,15 @@ _elementtree_Element_makeelement(PyObject *self, PyTypeObject *cls, PyObject *co
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject *tag;
     PyObject *attrib;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -897,7 +927,6 @@ _elementtree_TreeBuilder___init__(PyObject *self, PyObject *args, PyObject *kwar
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[5];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 0;
@@ -907,8 +936,15 @@ _elementtree_TreeBuilder___init__(PyObject *self, PyObject *args, PyObject *kwar
     int insert_comments = 0;
     int insert_pis = 0;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 0 > nargs || nargs > 1) {
+        PyObject *argsbuf[5];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -1174,15 +1210,21 @@ _elementtree_XMLParser___init__(PyObject *self, PyObject *args, PyObject *kwargs
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 0;
     PyObject *target = Py_None;
     const char *encoding = NULL;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 0, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 0 > nargs || nargs > 0) {
+        PyObject *argsbuf[2];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 0, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -1331,4 +1373,4 @@ _elementtree_XMLParser__setevents(PyObject *self, PyObject *const *args, Py_ssiz
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=c863ce16d8566291 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=e7188bd8635dda03 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_functoolsmodule.c.h b/Modules/clinic/_functoolsmodule.c.h
index 23f66631085031..911c1cf16d531b 100644
--- a/Modules/clinic/_functoolsmodule.c.h
+++ b/Modules/clinic/_functoolsmodule.c.h
@@ -55,11 +55,14 @@ _functools_cmp_to_key(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *mycmp;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -121,14 +124,17 @@ _functools_reduce(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyO
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     PyObject *func;
     PyObject *seq;
     PyObject *result = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -192,4 +198,4 @@ _functools__lru_cache_wrapper_cache_clear(PyObject *self, PyObject *Py_UNUSED(ig
 
     return return_value;
 }
-/*[clinic end generated code: output=7f2abc718fcc35d5 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=f8224b44adcb62c4 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_hashopenssl.c.h b/Modules/clinic/_hashopenssl.c.h
index 3d81a6dcce1440..95cce3bb35fda8 100644
--- a/Modules/clinic/_hashopenssl.c.h
+++ b/Modules/clinic/_hashopenssl.c.h
@@ -131,11 +131,14 @@ _hashlib_HASHXOF_digest(PyObject *self, PyObject *const *args, Py_ssize_t nargs,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t length;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -204,11 +207,14 @@ _hashlib_HASHXOF_hexdigest(PyObject *self, PyObject *const *args, Py_ssize_t nar
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t length;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -281,15 +287,18 @@ _hashlib_HASH_new(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyO
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     const char *name;
     PyObject *data = NULL;
     int usedforsecurity = 1;
     PyObject *string = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[4];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -380,14 +389,17 @@ _hashlib_openssl_md5(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *data = NULL;
     int usedforsecurity = 1;
     PyObject *string = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -465,14 +477,17 @@ _hashlib_openssl_sha1(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *data = NULL;
     int usedforsecurity = 1;
     PyObject *string = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -551,14 +566,17 @@ _hashlib_openssl_sha224(PyObject *module, PyObject *const *args, Py_ssize_t narg
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *data = NULL;
     int usedforsecurity = 1;
     PyObject *string = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -637,14 +655,17 @@ _hashlib_openssl_sha256(PyObject *module, PyObject *const *args, Py_ssize_t narg
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *data = NULL;
     int usedforsecurity = 1;
     PyObject *string = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -723,14 +744,17 @@ _hashlib_openssl_sha384(PyObject *module, PyObject *const *args, Py_ssize_t narg
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *data = NULL;
     int usedforsecurity = 1;
     PyObject *string = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -809,14 +833,17 @@ _hashlib_openssl_sha512(PyObject *module, PyObject *const *args, Py_ssize_t narg
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *data = NULL;
     int usedforsecurity = 1;
     PyObject *string = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -897,14 +924,17 @@ _hashlib_openssl_sha3_224(PyObject *module, PyObject *const *args, Py_ssize_t na
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *data = NULL;
     int usedforsecurity = 1;
     PyObject *string = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -987,14 +1017,17 @@ _hashlib_openssl_sha3_256(PyObject *module, PyObject *const *args, Py_ssize_t na
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *data = NULL;
     int usedforsecurity = 1;
     PyObject *string = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1077,14 +1110,17 @@ _hashlib_openssl_sha3_384(PyObject *module, PyObject *const *args, Py_ssize_t na
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *data = NULL;
     int usedforsecurity = 1;
     PyObject *string = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1167,14 +1203,17 @@ _hashlib_openssl_sha3_512(PyObject *module, PyObject *const *args, Py_ssize_t na
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *data = NULL;
     int usedforsecurity = 1;
     PyObject *string = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1257,14 +1296,17 @@ _hashlib_openssl_shake_128(PyObject *module, PyObject *const *args, Py_ssize_t n
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *data = NULL;
     int usedforsecurity = 1;
     PyObject *string = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1347,14 +1389,17 @@ _hashlib_openssl_shake_256(PyObject *module, PyObject *const *args, Py_ssize_t n
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *data = NULL;
     int usedforsecurity = 1;
     PyObject *string = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1436,7 +1481,6 @@ pbkdf2_hmac(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[5];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 4;
     const char *hash_name;
     Py_buffer password = {NULL, NULL};
@@ -1444,8 +1488,12 @@ pbkdf2_hmac(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
     long iterations;
     PyObject *dklen_obj = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 4, /*maxpos*/ 5, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 4 > nargs || nargs > 5 || !args) {
+        PyObject *argsbuf[5];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 4, /*maxpos*/ 5, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1537,8 +1585,8 @@ _hashlib_scrypt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[7];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 5;
+    PyObject *argsbuf[7];
     Py_buffer password = {NULL, NULL};
     Py_buffer salt = {NULL, NULL};
     unsigned long n;
@@ -1643,13 +1691,16 @@ _hashlib_hmac_singleshot(PyObject *module, PyObject *const *args, Py_ssize_t nar
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_buffer key = {NULL, NULL};
     Py_buffer msg = {NULL, NULL};
     PyObject *digest;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 3 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1719,14 +1770,17 @@ _hashlib_hmac_new(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyO
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     Py_buffer key = {NULL, NULL};
     PyObject *msg_obj = NULL;
     PyObject *digestmod = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1816,11 +1870,14 @@ _hashlib_HMAC_update(PyObject *self, PyObject *const *args, Py_ssize_t nargs, Py
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *msg;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1976,4 +2033,4 @@ _hashlib_compare_digest(PyObject *module, PyObject *const *args, Py_ssize_t narg
 #ifndef _HASHLIB_OPENSSL_SHAKE_256_METHODDEF
     #define _HASHLIB_OPENSSL_SHAKE_256_METHODDEF
 #endif /* !defined(_HASHLIB_OPENSSL_SHAKE_256_METHODDEF) */
-/*[clinic end generated code: output=cd5ff436f6dc2938 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=4a216e76db19d67a input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_lsprof.c.h b/Modules/clinic/_lsprof.c.h
index c426cd6fe02f39..078b2951e62825 100644
--- a/Modules/clinic/_lsprof.c.h
+++ b/Modules/clinic/_lsprof.c.h
@@ -272,13 +272,16 @@ _lsprof_Profiler_enable(PyObject *self, PyObject *const *args, Py_ssize_t nargs,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     int subcalls = 1;
     int builtins = 1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -387,7 +390,6 @@ profiler_init(PyObject *self, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 0;
@@ -396,8 +398,15 @@ profiler_init(PyObject *self, PyObject *args, PyObject *kwargs)
     int subcalls = 1;
     int builtins = 1;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 0 > nargs || nargs > 4) {
+        PyObject *argsbuf[4];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -444,4 +453,4 @@ profiler_init(PyObject *self, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=9e46985561166c37 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=e830411110872900 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_lzmamodule.c.h b/Modules/clinic/_lzmamodule.c.h
index ebdc81a0dac2f0..7b63e4bb4c51a0 100644
--- a/Modules/clinic/_lzmamodule.c.h
+++ b/Modules/clinic/_lzmamodule.c.h
@@ -125,13 +125,16 @@ _lzma_LZMADecompressor_decompress(PyObject *self, PyObject *const *args, Py_ssiz
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     Py_buffer data = {NULL, NULL};
     Py_ssize_t max_length = -1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -223,7 +226,6 @@ _lzma_LZMADecompressor(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 0;
@@ -231,8 +233,15 @@ _lzma_LZMADecompressor(PyTypeObject *type, PyObject *args, PyObject *kwargs)
     PyObject *memlimit = Py_None;
     PyObject *filters = Py_None;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 0 > nargs || nargs > 3) {
+        PyObject *argsbuf[3];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -333,4 +342,4 @@ _lzma__decode_filter_properties(PyObject *module, PyObject *const *args, Py_ssiz
 
     return return_value;
 }
-/*[clinic end generated code: output=6386084cb43d2533 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=7d33f082d262f86d input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_opcode.c.h b/Modules/clinic/_opcode.c.h
index fb8d814241bd5e..e5ded0d675600c 100644
--- a/Modules/clinic/_opcode.c.h
+++ b/Modules/clinic/_opcode.c.h
@@ -52,15 +52,18 @@ _opcode_stack_effect(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     int opcode;
     PyObject *oparg = Py_None;
     PyObject *jump = Py_None;
     int _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -132,12 +135,15 @@ _opcode_is_valid(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int opcode;
     int _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -198,12 +204,15 @@ _opcode_has_arg(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int opcode;
     int _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -264,12 +273,15 @@ _opcode_has_const(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyO
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int opcode;
     int _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -330,12 +342,15 @@ _opcode_has_name(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int opcode;
     int _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -396,12 +411,15 @@ _opcode_has_jump(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int opcode;
     int _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -467,12 +485,15 @@ _opcode_has_free(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int opcode;
     int _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -533,12 +554,15 @@ _opcode_has_local(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyO
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int opcode;
     int _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -599,12 +623,15 @@ _opcode_has_exc(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int opcode;
     int _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -757,12 +784,15 @@ _opcode_get_executor(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject *code;
     int offset;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -776,4 +806,4 @@ _opcode_get_executor(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=a11f02989c3175d7 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=c9b0e8e2bd70a367 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_pickle.c.h b/Modules/clinic/_pickle.c.h
index 213e817a50a287..437dc5b2876b8e 100644
--- a/Modules/clinic/_pickle.c.h
+++ b/Modules/clinic/_pickle.c.h
@@ -61,11 +61,14 @@ _pickle_Pickler_dump(PyObject *self, PyTypeObject *cls, PyObject *const *args, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *obj;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -175,7 +178,6 @@ _pickle_Pickler___init__(PyObject *self, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 1;
@@ -184,8 +186,15 @@ _pickle_Pickler___init__(PyObject *self, PyObject *args, PyObject *kwargs)
     int fix_imports = 1;
     PyObject *buffer_callback = Py_None;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 1 > nargs || nargs > 4) {
+        PyObject *argsbuf[4];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -299,11 +308,14 @@ _pickle_Unpickler_persistent_load(PyObject *self, PyTypeObject *cls, PyObject *c
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *pid;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -378,12 +390,15 @@ _pickle_Unpickler_find_class(PyObject *self, PyTypeObject *cls, PyObject *const
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject *module_name;
     PyObject *global_name;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -485,7 +500,6 @@ _pickle_Unpickler___init__(PyObject *self, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[5];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 1;
@@ -495,8 +509,15 @@ _pickle_Unpickler___init__(PyObject *self, PyObject *args, PyObject *kwargs)
     const char *errors = "strict";
     PyObject *buffers = NULL;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 1 > nargs || nargs > 1) {
+        PyObject *argsbuf[5];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -682,7 +703,6 @@ _pickle_dump(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[5];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     PyObject *obj;
     PyObject *file;
@@ -690,8 +710,12 @@ _pickle_dump(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
     int fix_imports = 1;
     PyObject *buffer_callback = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[5];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -789,15 +813,18 @@ _pickle_dumps(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *obj;
     PyObject *protocol = Py_None;
     int fix_imports = 1;
     PyObject *buffer_callback = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[4];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -900,7 +927,6 @@ _pickle_load(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[5];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *file;
     int fix_imports = 1;
@@ -908,8 +934,12 @@ _pickle_load(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
     const char *errors = "strict";
     PyObject *buffers = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[5];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1029,7 +1059,6 @@ _pickle_loads(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[5];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *data;
     int fix_imports = 1;
@@ -1037,8 +1066,12 @@ _pickle_loads(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
     const char *errors = "strict";
     PyObject *buffers = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[5];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1098,4 +1131,4 @@ _pickle_loads(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=6331c72b3c427f63 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=a6a2d465e969ca7f input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_queuemodule.c.h b/Modules/clinic/_queuemodule.c.h
index 1751d68716ba5f..98c85553e19bae 100644
--- a/Modules/clinic/_queuemodule.c.h
+++ b/Modules/clinic/_queuemodule.c.h
@@ -85,14 +85,17 @@ _queue_SimpleQueue_put(PyObject *self, PyObject *const *args, Py_ssize_t nargs,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *item;
     int block = 1;
     PyObject *timeout = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -165,11 +168,14 @@ _queue_SimpleQueue_put_nowait(PyObject *self, PyObject *const *args, Py_ssize_t
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *item;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -234,13 +240,16 @@ _queue_SimpleQueue_get(PyObject *self, PyTypeObject *cls, PyObject *const *args,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     int block = 1;
     PyObject *timeout_obj = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -358,4 +367,4 @@ _queue_SimpleQueue_qsize(PyObject *self, PyObject *Py_UNUSED(ignored))
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=1d3efe9df89997cf input=a9049054013a1b77]*/
+/*[clinic end generated code: output=4bf899550779ad55 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_remote_debugging_module.c.h b/Modules/clinic/_remote_debugging_module.c.h
index f6a51cdba6b401..e76013c1d16fbb 100644
--- a/Modules/clinic/_remote_debugging_module.c.h
+++ b/Modules/clinic/_remote_debugging_module.c.h
@@ -71,7 +71,6 @@ _remote_debugging_RemoteUnwinder___init__(PyObject *self, PyObject *args, PyObje
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 1;
@@ -80,8 +79,15 @@ _remote_debugging_RemoteUnwinder___init__(PyObject *self, PyObject *args, PyObje
     int only_active_thread = 0;
     int debug = 0;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 1 > nargs || nargs > 1) {
+        PyObject *argsbuf[4];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -288,4 +294,4 @@ _remote_debugging_RemoteUnwinder_get_async_stack_trace(PyObject *self, PyObject
 
     return return_value;
 }
-/*[clinic end generated code: output=0dd1e6e8bab2a8b1 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=1c8e6dce8168fa67 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_ssl.c.h b/Modules/clinic/_ssl.c.h
index 5b80fab0abb45e..5cf9b7ad1d4da6 100644
--- a/Modules/clinic/_ssl.c.h
+++ b/Modules/clinic/_ssl.c.h
@@ -755,12 +755,15 @@ _ssl__SSLSocket_get_channel_binding(PyObject *self, PyObject *const *args, Py_ss
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     const char *cb_type = "tls-unique";
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1072,12 +1075,15 @@ _ssl__SSLContext_get_groups(PyObject *self, PyObject *const *args, Py_ssize_t na
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     int include_aliases = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 0, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 0 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 0, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1640,14 +1646,17 @@ _ssl__SSLContext_load_cert_chain(PyObject *self, PyObject *const *args, Py_ssize
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *certfile;
     PyObject *keyfile = Py_None;
     PyObject *password = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1716,14 +1725,17 @@ _ssl__SSLContext_load_verify_locations(PyObject *self, PyObject *const *args, Py
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *cafile = Py_None;
     PyObject *capath = Py_None;
     PyObject *cadata = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1820,7 +1832,6 @@ _ssl__SSLContext__wrap_socket(PyObject *self, PyObject *const *args, Py_ssize_t
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[5];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     PyObject *sock;
     int server_side;
@@ -1828,8 +1839,12 @@ _ssl__SSLContext__wrap_socket(PyObject *self, PyObject *const *args, Py_ssize_t
     PyObject *owner = Py_None;
     PyObject *session = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[5];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1917,7 +1932,6 @@ _ssl__SSLContext__wrap_bio(PyObject *self, PyObject *const *args, Py_ssize_t nar
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[6];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 3;
     PySSLMemoryBIO *incoming;
     PySSLMemoryBIO *outgoing;
@@ -1926,8 +1940,12 @@ _ssl__SSLContext__wrap_bio(PyObject *self, PyObject *const *args, Py_ssize_t nar
     PyObject *owner = Py_None;
     PyObject *session = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 3, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 3 > nargs || nargs > 4 || !args) {
+        PyObject *argsbuf[6];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 3, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2184,12 +2202,15 @@ _ssl__SSLContext_get_ca_certs(PyObject *self, PyObject *const *args, Py_ssize_t
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     int binary_form = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2252,11 +2273,14 @@ _ssl__SSLContext_set_psk_client_callback(PyObject *self, PyObject *const *args,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *callback;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2313,13 +2337,16 @@ _ssl__SSLContext_set_psk_server_callback(PyObject *self, PyObject *const *args,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *callback;
     const char *identity_hint = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2899,13 +2926,16 @@ _ssl_txt2obj(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     const char *txt;
     int name = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -3019,11 +3049,14 @@ _ssl_enum_certificates(PyObject *module, PyObject *const *args, Py_ssize_t nargs
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     const char *store_name;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -3100,11 +3133,14 @@ _ssl_enum_crls(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     const char *store_name;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -3142,4 +3178,4 @@ _ssl_enum_crls(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
 #ifndef _SSL_ENUM_CRLS_METHODDEF
     #define _SSL_ENUM_CRLS_METHODDEF
 #endif /* !defined(_SSL_ENUM_CRLS_METHODDEF) */
-/*[clinic end generated code: output=c409bdf3c123b28b input=a9049054013a1b77]*/
+/*[clinic end generated code: output=fb8b7e4b5cb6d93d input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_struct.c.h b/Modules/clinic/_struct.c.h
index e4eaadb91eb231..131c71738c5e3d 100644
--- a/Modules/clinic/_struct.c.h
+++ b/Modules/clinic/_struct.c.h
@@ -54,13 +54,19 @@ Struct___init__(PyObject *self, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     PyObject *format;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 1 > nargs || nargs > 1) {
+        PyObject *argsbuf[1];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -159,13 +165,16 @@ Struct_unpack_from(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyOb
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     Py_buffer buffer = {NULL, NULL};
     Py_ssize_t offset = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -372,14 +381,17 @@ unpack_from(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     PyStructObject *s_object = NULL;
     Py_buffer buffer = {NULL, NULL};
     Py_ssize_t offset = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -458,4 +470,4 @@ iter_unpack(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 
     return return_value;
 }
-/*[clinic end generated code: output=caa7f36443e91cb9 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=19441321a3d3728d input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_testclinic.c.h b/Modules/clinic/_testclinic.c.h
index 68c92a86226bc9..a0d3fa22867675 100644
--- a/Modules/clinic/_testclinic.c.h
+++ b/Modules/clinic/_testclinic.c.h
@@ -1596,12 +1596,15 @@ keywords(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject *a;
     PyObject *b;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1714,14 +1717,17 @@ keywords_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *a;
     PyObject *b = Py_None;
     PyObject *c = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1786,15 +1792,18 @@ keywords_opt_kwonly(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *a;
     PyObject *b = Py_None;
     PyObject *c = Py_None;
     PyObject *d = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[4];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1869,14 +1878,17 @@ keywords_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *a;
     PyObject *b = Py_None;
     PyObject *c = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1940,12 +1952,15 @@ posonly_keywords(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject *a;
     PyObject *b;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2121,15 +2136,18 @@ posonly_keywords_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     PyObject *a;
     PyObject *b;
     PyObject *c = Py_None;
     PyObject *d = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 4 || !args) {
+        PyObject *argsbuf[4];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2195,15 +2213,18 @@ posonly_opt_keywords_opt(PyObject *module, PyObject *const *args, Py_ssize_t nar
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *a;
     PyObject *b = Py_None;
     PyObject *c = Py_None;
     PyObject *d = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 4 || !args) {
+        PyObject *argsbuf[4];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2274,8 +2295,8 @@ posonly_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, Py
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
+    PyObject *argsbuf[4];
     PyObject *a;
     PyObject *b;
     PyObject *c = Py_None;
@@ -2348,15 +2369,18 @@ posonly_opt_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *a;
     PyObject *b = Py_None;
     PyObject *c = Py_None;
     PyObject *d = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[4];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2427,8 +2451,8 @@ posonly_keywords_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[5];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 3;
+    PyObject *argsbuf[5];
     PyObject *a;
     PyObject *b;
     PyObject *c;
@@ -2505,7 +2529,6 @@ posonly_keywords_opt_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssiz
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[5];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     PyObject *a;
     PyObject *b;
@@ -2513,8 +2536,12 @@ posonly_keywords_opt_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssiz
     PyObject *d = Py_None;
     PyObject *e = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[5];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2592,15 +2619,18 @@ posonly_opt_keywords_opt_kwonly_opt(PyObject *module, PyObject *const *args, Py_
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *a;
     PyObject *b = Py_None;
     PyObject *c = Py_None;
     PyObject *d = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[4];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2844,8 +2874,8 @@ posonly_poskw_varpos(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject * const *fastargs;
+    PyObject *argsbuf[2];
     PyObject *a;
     PyObject *b;
     PyObject *__clinic_args = NULL;
@@ -2914,8 +2944,8 @@ poskw_varpos(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject * const *fastargs;
+    PyObject *argsbuf[1];
     PyObject *a;
     PyObject *__clinic_args = NULL;
 
@@ -2983,9 +3013,9 @@ poskw_varpos_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t narg
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject * const *fastargs;
     Py_ssize_t noptargs = Py_MIN(nargs, 1) + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
+    PyObject *argsbuf[2];
     PyObject *a;
     PyObject *__clinic_args = NULL;
     int b = 0;
@@ -3062,9 +3092,9 @@ poskw_varpos_kwonly_opt2(PyObject *module, PyObject *const *args, Py_ssize_t nar
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     PyObject * const *fastargs;
     Py_ssize_t noptargs = Py_MIN(nargs, 1) + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
+    PyObject *argsbuf[3];
     PyObject *a;
     PyObject *__clinic_args = NULL;
     PyObject *b = Py_False;
@@ -3144,9 +3174,9 @@ varpos_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyO
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject * const *fastargs;
     Py_ssize_t noptargs = 0 + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
+    PyObject *argsbuf[1];
     PyObject *__clinic_args = NULL;
     PyObject *b = Py_False;
 
@@ -3216,9 +3246,9 @@ varpos_kwonly_req_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     PyObject * const *fastargs;
     Py_ssize_t noptargs = 0 + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
+    PyObject *argsbuf[3];
     PyObject *__clinic_args = NULL;
     PyObject *a;
     PyObject *b = Py_False;
@@ -3397,8 +3427,8 @@ posonly_poskw_varpos_array(PyObject *module, PyObject *const *args, Py_ssize_t n
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject * const *fastargs;
+    PyObject *argsbuf[2];
     PyObject *a;
     PyObject *b;
     PyObject * const *__clinic_args;
@@ -3463,9 +3493,9 @@ gh_32092_oob(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     PyObject * const *fastargs;
     Py_ssize_t noptargs = Py_MIN(nargs, 2) + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
+    PyObject *argsbuf[4];
     PyObject *pos1;
     PyObject *pos2;
     PyObject *varargs = NULL;
@@ -3549,9 +3579,9 @@ gh_32092_kw_pass(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject * const *fastargs;
     Py_ssize_t noptargs = Py_MIN(nargs, 1) + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
+    PyObject *argsbuf[2];
     PyObject *pos;
     PyObject *__clinic_args = NULL;
     PyObject *kw = Py_None;
@@ -3691,9 +3721,9 @@ null_or_tuple_for_varargs(PyObject *module, PyObject *const *args, Py_ssize_t na
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject * const *fastargs;
     Py_ssize_t noptargs = Py_MIN(nargs, 1) + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
+    PyObject *argsbuf[2];
     PyObject *name;
     PyObject *constraints = NULL;
     int covariant = 0;
@@ -3769,11 +3799,14 @@ clone_f1(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     const char *path;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -3838,11 +3871,14 @@ clone_f2(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     const char *path;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -3907,14 +3943,17 @@ clone_with_conv_f1(PyObject *module, PyObject *const *args, Py_ssize_t nargs, Py
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     custom_t path = {
                 .name = "clone_with_conv_f1",
             };
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -3973,14 +4012,17 @@ clone_with_conv_f2(PyObject *module, PyObject *const *args, Py_ssize_t nargs, Py
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     custom_t path = {
                 .name = "clone_with_conv_f2",
             };
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -4063,11 +4105,14 @@ _testclinic_TestClass_get_defining_class_arg(PyObject *self, PyTypeObject *cls,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *arg;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -4107,8 +4152,8 @@ _testclinic_TestClass_defclass_varpos(PyObject *self, PyTypeObject *cls, PyObjec
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject * const *fastargs;
+    PyObject *argsbuf[1];
     PyObject *__clinic_args = NULL;
 
     fastargs = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
@@ -4160,8 +4205,8 @@ _testclinic_TestClass_defclass_posonly_varpos(PyObject *self, PyTypeObject *cls,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject * const *fastargs;
+    PyObject *argsbuf[2];
     PyObject *a;
     PyObject *b;
     PyObject *__clinic_args = NULL;
@@ -4342,15 +4387,21 @@ _testclinic_TestClass_posonly_poskw_varpos_no_fastcall(PyObject *type, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     PyObject *a;
     PyObject *b;
     PyObject *__clinic_args = NULL;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 1, argsbuf);
+    if (kwargs || 2 > nargs || nargs > 2) {
+        PyObject *argsbuf[2];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 1, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -4520,7 +4571,6 @@ _testclinic_TestClass_posonly_poskw_varpos_array_no_fastcall(PyObject *type, PyO
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     PyObject *a;
@@ -4528,8 +4578,15 @@ _testclinic_TestClass_posonly_poskw_varpos_array_no_fastcall(PyObject *type, PyO
     PyObject * const *__clinic_args;
     Py_ssize_t args_length;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 1, argsbuf);
+    if (kwargs || 2 > nargs || nargs > 2) {
+        PyObject *argsbuf[2];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 1, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -4542,4 +4599,4 @@ _testclinic_TestClass_posonly_poskw_varpos_array_no_fastcall(PyObject *type, PyO
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=6b04671afdafbecf input=a9049054013a1b77]*/
+/*[clinic end generated code: output=4659224026893085 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_testclinic_depr.c.h b/Modules/clinic/_testclinic_depr.c.h
index a46d238801b321..49e1393f21a969 100644
--- a/Modules/clinic/_testclinic_depr.c.h
+++ b/Modules/clinic/_testclinic_depr.c.h
@@ -67,7 +67,6 @@ depr_star_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 0;
@@ -82,8 +81,15 @@ depr_star_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
             goto exit;
         }
     }
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 0 > nargs || nargs > 1) {
+        PyObject *argsbuf[1];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -155,7 +161,6 @@ depr_star_new_clone(PyObject *type, PyObject *const *args, Py_ssize_t nargs, PyO
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *a = Py_None;
 
@@ -168,8 +173,12 @@ depr_star_new_clone(PyObject *type, PyObject *const *args, Py_ssize_t nargs, PyO
             goto exit;
         }
     }
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -240,7 +249,6 @@ depr_star_init(PyObject *self, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 0;
@@ -255,8 +263,15 @@ depr_star_init(PyObject *self, PyObject *args, PyObject *kwargs)
             goto exit;
         }
     }
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 0 > nargs || nargs > 1) {
+        PyObject *argsbuf[1];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -328,7 +343,6 @@ depr_star_init_clone(PyObject *self, PyObject *const *args, Py_ssize_t nargs, Py
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *a = Py_None;
 
@@ -341,8 +355,12 @@ depr_star_init_clone(PyObject *self, PyObject *const *args, Py_ssize_t nargs, Py
             goto exit;
         }
     }
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -484,14 +502,20 @@ depr_kwd_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 0;
     PyObject *a = Py_None;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 0 > nargs || nargs > 1) {
+        PyObject *argsbuf[1];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -570,14 +594,20 @@ depr_kwd_init(PyObject *self, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 0;
     PyObject *a = Py_None;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 0 > nargs || nargs > 1) {
+        PyObject *argsbuf[1];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -733,7 +763,6 @@ depr_star_pos0_len1(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *a;
 
     if (nargs == 1) {
@@ -745,8 +774,12 @@ depr_star_pos0_len1(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
             goto exit;
         }
     }
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -814,7 +847,6 @@ depr_star_pos0_len2(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject *a;
     PyObject *b;
 
@@ -827,8 +859,12 @@ depr_star_pos0_len2(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
             goto exit;
         }
     }
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -985,7 +1021,6 @@ depr_star_pos1_len1_opt(PyObject *module, PyObject *const *args, Py_ssize_t narg
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *a;
     PyObject *b = Py_None;
@@ -999,8 +1034,12 @@ depr_star_pos1_len1_opt(PyObject *module, PyObject *const *args, Py_ssize_t narg
             goto exit;
         }
     }
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1073,7 +1112,6 @@ depr_star_pos1_len1(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject *a;
     PyObject *b;
 
@@ -1086,8 +1124,12 @@ depr_star_pos1_len1(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
             goto exit;
         }
     }
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1245,7 +1287,6 @@ depr_star_pos2_len1(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     PyObject *a;
     PyObject *b;
     PyObject *c;
@@ -1259,8 +1300,12 @@ depr_star_pos2_len1(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
             goto exit;
         }
     }
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 3 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1331,7 +1376,6 @@ depr_star_pos2_len2(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     PyObject *a;
     PyObject *b;
     PyObject *c;
@@ -1346,8 +1390,12 @@ depr_star_pos2_len2(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
             goto exit;
         }
     }
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 4, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 4 > nargs || nargs > 4 || !args) {
+        PyObject *argsbuf[4];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 4, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1691,12 +1739,15 @@ depr_kwd_required_1(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject *a;
     PyObject *b;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1775,13 +1826,16 @@ depr_kwd_required_2(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     PyObject *a;
     PyObject *b;
     PyObject *c;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 3 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1859,13 +1913,16 @@ depr_kwd_optional_1(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *a;
     PyObject *b = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1948,14 +2005,17 @@ depr_kwd_optional_2(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *a;
     PyObject *b = Py_None;
     PyObject *c = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2044,14 +2104,17 @@ depr_kwd_optional_3(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *a = Py_None;
     PyObject *b = Py_None;
     PyObject *c = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2145,14 +2208,17 @@ depr_kwd_required_optional(PyObject *module, PyObject *const *args, Py_ssize_t n
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     PyObject *a;
     PyObject *b;
     PyObject *c = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2325,7 +2391,6 @@ depr_kwd_multi(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[8];
     PyObject *a;
     PyObject *b;
     PyObject *c;
@@ -2335,8 +2400,12 @@ depr_kwd_multi(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
     PyObject *g;
     PyObject *h;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 8, /*maxpos*/ 8, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 8 > nargs || nargs > 8 || !args) {
+        PyObject *argsbuf[8];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 8, /*maxpos*/ 8, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2474,4 +2543,4 @@ depr_multi(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=4e60af44fd6b7b94 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=ce0734999f925b3d input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_testinternalcapi.c.h b/Modules/clinic/_testinternalcapi.c.h
index 21f4ee3201e5bf..e39e44f8fb5aea 100644
--- a/Modules/clinic/_testinternalcapi.c.h
+++ b/Modules/clinic/_testinternalcapi.c.h
@@ -51,11 +51,14 @@ _testinternalcapi_compiler_cleandoc(PyObject *module, PyObject *const *args, Py_
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *doc;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -133,15 +136,18 @@ _testinternalcapi_compiler_codegen(PyObject *module, PyObject *const *args, Py_s
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 3;
     PyObject *ast;
     PyObject *filename;
     int optimize;
     int compile_mode = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 3, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 3 > nargs || nargs > 4 || !args) {
+        PyObject *argsbuf[4];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 3, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -209,13 +215,16 @@ _testinternalcapi_optimize_cfg(PyObject *module, PyObject *const *args, Py_ssize
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     PyObject *instructions;
     PyObject *consts;
     int nlocals;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 3 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -277,13 +286,16 @@ _testinternalcapi_assemble_code_object(PyObject *module, PyObject *const *args,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     PyObject *filename;
     PyObject *instructions;
     PyObject *metadata;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 3 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -356,12 +368,15 @@ gh_119213_getargs(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyO
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *spam = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -392,4 +407,4 @@ get_next_dict_keys_version(PyObject *module, PyObject *Py_UNUSED(ignored))
 {
     return get_next_dict_keys_version_impl(module);
 }
-/*[clinic end generated code: output=fbd8b7e0cae8bac7 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=24e5fb8a7a3cb338 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_testmultiphase.c.h b/Modules/clinic/_testmultiphase.c.h
index 311b6409476711..550c797e5b3848 100644
--- a/Modules/clinic/_testmultiphase.c.h
+++ b/Modules/clinic/_testmultiphase.c.h
@@ -106,13 +106,16 @@ _testmultiphase_StateAccessType_increment_count_clinic(PyObject *self, PyTypeObj
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     int n = 1;
     int twice = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -165,4 +168,4 @@ _testmultiphase_StateAccessType_get_count(PyObject *self, PyTypeObject *cls, PyO
     }
     return _testmultiphase_StateAccessType_get_count_impl((StateAccessTypeObject *)self, cls);
 }
-/*[clinic end generated code: output=8eed2f14292ec986 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=9428ef7e4efd897c input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_threadmodule.c.h b/Modules/clinic/_threadmodule.c.h
index fd8e32a2261d38..5274ef1b4c98e8 100644
--- a/Modules/clinic/_threadmodule.c.h
+++ b/Modules/clinic/_threadmodule.c.h
@@ -121,11 +121,14 @@ _thread_set_name(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *name_obj;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -149,4 +152,4 @@ _thread_set_name(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
 #ifndef _THREAD_SET_NAME_METHODDEF
     #define _THREAD_SET_NAME_METHODDEF
 #endif /* !defined(_THREAD_SET_NAME_METHODDEF) */
-/*[clinic end generated code: output=b381ec5e313198e7 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=81acd2fce474a93d input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_winapi.c.h b/Modules/clinic/_winapi.c.h
index bd685e75d9344f..d9fd420ddbe7c6 100644
--- a/Modules/clinic/_winapi.c.h
+++ b/Modules/clinic/_winapi.c.h
@@ -798,11 +798,14 @@ _winapi_GetLongPathName(PyObject *module, PyObject *const *args, Py_ssize_t narg
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     LPCWSTR path = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -907,11 +910,14 @@ _winapi_GetShortPathName(PyObject *module, PyObject *const *args, Py_ssize_t nar
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     LPCWSTR path = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2057,11 +2063,14 @@ _winapi__mimetypes_read_windows_registry(PyObject *module, PyObject *const *args
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *on_type_read;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2187,4 +2196,4 @@ _winapi_CopyFile2(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyO
 #ifndef _WINAPI_GETSHORTPATHNAME_METHODDEF
     #define _WINAPI_GETSHORTPATHNAME_METHODDEF
 #endif /* !defined(_WINAPI_GETSHORTPATHNAME_METHODDEF) */
-/*[clinic end generated code: output=4581fd481c3c6293 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=9d5f400c2fcb5f9a input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_zoneinfo.c.h b/Modules/clinic/_zoneinfo.c.h
index 19564a6c13f246..8c1a8c01201928 100644
--- a/Modules/clinic/_zoneinfo.c.h
+++ b/Modules/clinic/_zoneinfo.c.h
@@ -49,13 +49,19 @@ zoneinfo_ZoneInfo(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     PyObject *key;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 1 > nargs || nargs > 1) {
+        PyObject *argsbuf[1];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -112,13 +118,16 @@ zoneinfo_ZoneInfo_from_file(PyObject *type, PyTypeObject *cls, PyObject *const *
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *file_obj;
     PyObject *key = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -178,11 +187,14 @@ zoneinfo_ZoneInfo_no_cache(PyObject *type, PyTypeObject *cls, PyObject *const *a
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *key;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -237,12 +249,15 @@ zoneinfo_ZoneInfo_clear_cache(PyObject *type, PyTypeObject *cls, PyObject *const
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *only_keys = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 0, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 0 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 0, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -289,11 +304,14 @@ zoneinfo_ZoneInfo_utcoffset(PyObject *self, PyTypeObject *cls, PyObject *const *
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *dt;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -333,11 +351,14 @@ zoneinfo_ZoneInfo_dst(PyObject *self, PyTypeObject *cls, PyObject *const *args,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *dt;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -378,11 +399,14 @@ zoneinfo_ZoneInfo_tzname(PyObject *self, PyTypeObject *cls, PyObject *const *arg
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *dt;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -423,12 +447,15 @@ zoneinfo_ZoneInfo__unpickle(PyObject *type, PyTypeObject *cls, PyObject *const *
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject *key;
     unsigned char from_cache;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -454,4 +481,4 @@ zoneinfo_ZoneInfo__unpickle(PyObject *type, PyTypeObject *cls, PyObject *const *
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=c6df04d7b400bd7f input=a9049054013a1b77]*/
+/*[clinic end generated code: output=0ce39b628d11031c input=a9049054013a1b77]*/
diff --git a/Modules/clinic/arraymodule.c.h b/Modules/clinic/arraymodule.c.h
index 97e5ca771f3a90..33062d4447f0af 100644
--- a/Modules/clinic/arraymodule.c.h
+++ b/Modules/clinic/arraymodule.c.h
@@ -230,11 +230,14 @@ array_array_extend(PyObject *self, PyTypeObject *cls, PyObject *const *args, Py_
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *bb;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -398,12 +401,15 @@ array_array_fromfile(PyObject *self, PyTypeObject *cls, PyObject *const *args, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject *f;
     Py_ssize_t n;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -455,11 +461,14 @@ array_array_tofile(PyObject *self, PyTypeObject *cls, PyObject *const *args, Py_
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *f;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -715,11 +724,14 @@ array_array___reduce_ex__(PyObject *self, PyTypeObject *cls, PyObject *const *ar
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -773,4 +785,4 @@ array_arrayiterator___setstate__(PyObject *self, PyObject *state)
 
     return return_value;
 }
-/*[clinic end generated code: output=dd49451ac1cc3f39 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=8eff40a0ac7098bd input=a9049054013a1b77]*/
diff --git a/Modules/clinic/binascii.c.h b/Modules/clinic/binascii.c.h
index ce29e0d11a45cd..0296cb9a2fee89 100644
--- a/Modules/clinic/binascii.c.h
+++ b/Modules/clinic/binascii.c.h
@@ -82,13 +82,16 @@ binascii_b2a_uu(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     Py_buffer data = {NULL, NULL};
     int backtick = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -161,13 +164,16 @@ binascii_a2b_base64(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     Py_buffer data = {NULL, NULL};
     int strict_mode = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -235,13 +241,16 @@ binascii_b2a_base64(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     Py_buffer data = {NULL, NULL};
     int newline = 1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -441,14 +450,17 @@ binascii_b2a_hex(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     Py_buffer data = {NULL, NULL};
     PyObject *sep = NULL;
     int bytes_per_sep = 1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -533,14 +545,17 @@ binascii_hexlify(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     Py_buffer data = {NULL, NULL};
     PyObject *sep = NULL;
     int bytes_per_sep = 1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -682,13 +697,16 @@ binascii_a2b_qp(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     Py_buffer data = {NULL, NULL};
     int header = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -761,15 +779,18 @@ binascii_b2a_qp(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     Py_buffer data = {NULL, NULL};
     int quotetabs = 0;
     int istext = 1;
     int header = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 4 || !args) {
+        PyObject *argsbuf[4];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -812,4 +833,4 @@ binascii_b2a_qp(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
 
     return return_value;
 }
-/*[clinic end generated code: output=fba6a71e0d7d092f input=a9049054013a1b77]*/
+/*[clinic end generated code: output=0e9a59d2d995547a input=a9049054013a1b77]*/
diff --git a/Modules/clinic/blake2module.c.h b/Modules/clinic/blake2module.c.h
index 97d010d03a4b23..53551d9d1bbf2c 100644
--- a/Modules/clinic/blake2module.c.h
+++ b/Modules/clinic/blake2module.c.h
@@ -57,7 +57,6 @@ py_blake2b_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[14];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 0;
@@ -76,8 +75,15 @@ py_blake2b_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
     int usedforsecurity = 1;
     PyObject *string = NULL;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 0 > nargs || nargs > 1) {
+        PyObject *argsbuf[14];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -266,7 +272,6 @@ py_blake2s_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[14];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 0;
@@ -285,8 +290,15 @@ py_blake2s_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
     int usedforsecurity = 1;
     PyObject *string = NULL;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 0 > nargs || nargs > 1) {
+        PyObject *argsbuf[14];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -506,4 +518,4 @@ _blake2_blake2b_hexdigest(PyObject *self, PyObject *Py_UNUSED(ignored))
 {
     return _blake2_blake2b_hexdigest_impl((Blake2Object *)self);
 }
-/*[clinic end generated code: output=60a4abbcb8950fe5 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=d8f8a90815d6a00f input=a9049054013a1b77]*/
diff --git a/Modules/clinic/cmathmodule.c.h b/Modules/clinic/cmathmodule.c.h
index 7f9e65baf120ea..a4c35c4d99b94b 100644
--- a/Modules/clinic/cmathmodule.c.h
+++ b/Modules/clinic/cmathmodule.c.h
@@ -926,7 +926,6 @@ cmath_isclose(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     Py_complex a;
     Py_complex b;
@@ -934,8 +933,12 @@ cmath_isclose(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
     double abs_tol = 0.0;
     int _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[4];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -985,4 +988,4 @@ cmath_isclose(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=631db17fb1c79d66 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=e22e3e1134283a57 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/gcmodule.c.h b/Modules/clinic/gcmodule.c.h
index 53ff9e4faf8b7c..ac69c9fc15bf4f 100644
--- a/Modules/clinic/gcmodule.c.h
+++ b/Modules/clinic/gcmodule.c.h
@@ -123,13 +123,16 @@ gc_collect(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     int generation = NUM_GENERATIONS - 1;
     Py_ssize_t _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -417,12 +420,15 @@ gc_get_objects(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     Py_ssize_t generation = -1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -584,4 +590,4 @@ gc_get_freeze_count(PyObject *module, PyObject *Py_UNUSED(ignored))
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=96d057eac558e6ca input=a9049054013a1b77]*/
+/*[clinic end generated code: output=dc1f5b1db45f4288 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/grpmodule.c.h b/Modules/clinic/grpmodule.c.h
index 665c2f2dfdac14..496297f3c9e5b7 100644
--- a/Modules/clinic/grpmodule.c.h
+++ b/Modules/clinic/grpmodule.c.h
@@ -53,11 +53,14 @@ grp_getgrgid(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *id;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -113,11 +116,14 @@ grp_getgrnam(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *name;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -152,4 +158,4 @@ grp_getgrall(PyObject *module, PyObject *Py_UNUSED(ignored))
 {
     return grp_getgrall_impl(module);
 }
-/*[clinic end generated code: output=35aa81c00dbd3229 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=cf92d2d103e424fd input=a9049054013a1b77]*/
diff --git a/Modules/clinic/hmacmodule.c.h b/Modules/clinic/hmacmodule.c.h
index 1ceb2d809e830a..ac98e137cd8186 100644
--- a/Modules/clinic/hmacmodule.c.h
+++ b/Modules/clinic/hmacmodule.c.h
@@ -52,14 +52,17 @@ _hmac_new(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *keyobj;
     PyObject *msgobj = NULL;
     PyObject *hash_info_ref = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -146,11 +149,14 @@ _hmac_HMAC_update(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObj
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *msgobj;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -304,13 +310,16 @@ _hmac_compute_digest(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     PyObject *key;
     PyObject *msg;
     PyObject *digest;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 3 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -670,4 +679,4 @@ _hmac_compute_blake2b_32(PyObject *module, PyObject *const *args, Py_ssize_t nar
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=30c0614482d963f5 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=26f50b0e71cf6b4a input=a9049054013a1b77]*/
diff --git a/Modules/clinic/itertoolsmodule.c.h b/Modules/clinic/itertoolsmodule.c.h
index 0af82e7eb05be8..8c43856b7f44f6 100644
--- a/Modules/clinic/itertoolsmodule.c.h
+++ b/Modules/clinic/itertoolsmodule.c.h
@@ -65,7 +65,6 @@ batched_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 2;
@@ -73,8 +72,15 @@ batched_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
     Py_ssize_t n;
     int strict = 0;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 2 > nargs || nargs > 2) {
+        PyObject *argsbuf[3];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -184,15 +190,21 @@ itertools_groupby(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 1;
     PyObject *it;
     PyObject *keyfunc = Py_None;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 1 > nargs || nargs > 2) {
+        PyObject *argsbuf[2];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -546,14 +558,20 @@ itertools_combinations(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     PyObject *iterable;
     Py_ssize_t r;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 2 > nargs || nargs > 2) {
+        PyObject *argsbuf[2];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -620,14 +638,20 @@ itertools_combinations_with_replacement(PyTypeObject *type, PyObject *args, PyOb
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     PyObject *iterable;
     Py_ssize_t r;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 2 > nargs || nargs > 2) {
+        PyObject *argsbuf[2];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -693,15 +717,21 @@ itertools_permutations(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 1;
     PyObject *iterable;
     PyObject *robj = Py_None;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 1 > nargs || nargs > 2) {
+        PyObject *argsbuf[2];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -758,7 +788,6 @@ itertools_accumulate(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 1;
@@ -766,8 +795,15 @@ itertools_accumulate(PyTypeObject *type, PyObject *args, PyObject *kwargs)
     PyObject *binop = Py_None;
     PyObject *initial = Py_None;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 1 > nargs || nargs > 2) {
+        PyObject *argsbuf[3];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -836,14 +872,20 @@ itertools_compress(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     PyObject *seq1;
     PyObject *seq2;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 2 > nargs || nargs > 2) {
+        PyObject *argsbuf[2];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -937,15 +979,21 @@ itertools_count(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 0;
     PyObject *long_cnt = NULL;
     PyObject *long_step = NULL;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 0 > nargs || nargs > 2) {
+        PyObject *argsbuf[2];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -965,4 +1013,4 @@ itertools_count(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=999758202a532e0a input=a9049054013a1b77]*/
+/*[clinic end generated code: output=52d554b07760986b input=a9049054013a1b77]*/
diff --git a/Modules/clinic/mathmodule.c.h b/Modules/clinic/mathmodule.c.h
index 246019f2206028..fbfd7c5e1cd173 100644
--- a/Modules/clinic/mathmodule.c.h
+++ b/Modules/clinic/mathmodule.c.h
@@ -964,7 +964,6 @@ math_isclose(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     double a;
     double b;
@@ -972,8 +971,12 @@ math_isclose(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
     double abs_tol = 0.0;
     int _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[4];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1085,13 +1088,16 @@ math_prod(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *iterable;
     PyObject *start = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1238,14 +1244,17 @@ math_nextafter(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     double x;
     double y;
     PyObject *steps = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1318,4 +1327,4 @@ math_ulp(PyObject *module, PyObject *arg)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=4fb180d4c25ff8fa input=a9049054013a1b77]*/
+/*[clinic end generated code: output=940063ea7e2c8898 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/md5module.c.h b/Modules/clinic/md5module.c.h
index f76902586dddb2..9be5e38ea432bc 100644
--- a/Modules/clinic/md5module.c.h
+++ b/Modules/clinic/md5module.c.h
@@ -132,14 +132,17 @@ _md5_md5(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *data = NULL;
     int usedforsecurity = 1;
     PyObject *string_obj = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -172,4 +175,4 @@ _md5_md5(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=920fe54b9ed06f92 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=7f4026f293776b40 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/overlapped.c.h b/Modules/clinic/overlapped.c.h
index 7e2480bdace38d..b94446fdd728be 100644
--- a/Modules/clinic/overlapped.c.h
+++ b/Modules/clinic/overlapped.c.h
@@ -480,14 +480,20 @@ _overlapped_Overlapped(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 0;
     HANDLE event = INVALID_HANDLE_VALUE;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 0 > nargs || nargs > 1) {
+        PyObject *argsbuf[1];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -1242,4 +1248,4 @@ _overlapped_Overlapped_WSARecvFromInto(PyObject *self, PyObject *const *args, Py
 
     return return_value;
 }
-/*[clinic end generated code: output=3e4cb2b55342cd96 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=84b026d21f39be76 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/posixmodule.c.h b/Modules/clinic/posixmodule.c.h
index 8af9e1db781c8f..da3e03d9e17efb 100644
--- a/Modules/clinic/posixmodule.c.h
+++ b/Modules/clinic/posixmodule.c.h
@@ -72,14 +72,17 @@ os_stat(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwn
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     path_t path = PATH_T_INITIALIZE_P("stat", "path", 0, 0, 0, 1);
     int dir_fd = DEFAULT_DIR_FD;
     int follow_symlinks = 1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -157,13 +160,16 @@ os_lstat(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     path_t path = PATH_T_INITIALIZE_P("lstat", "path", 0, 0, 0, 0);
     int dir_fd = DEFAULT_DIR_FD;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -256,7 +262,6 @@ os_access(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[5];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     path_t path = PATH_T_INITIALIZE_P("access", "path", 0, 0, 0, 0);
     int mode;
@@ -265,8 +270,12 @@ os_access(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
     int follow_symlinks = 1;
     int _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[5];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -419,11 +428,14 @@ os_chdir(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     path_t path = PATH_T_INITIALIZE_P("chdir", "path", 0, 0, 0, PATH_HAVE_FCHDIR);
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -487,11 +499,14 @@ os_fchdir(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int fd;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -575,15 +590,18 @@ os_chmod(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     path_t path = PATH_T_INITIALIZE_P("chmod", "path", 0, 0, 0, PATH_HAVE_FCHMOD);
     int mode;
     int dir_fd = DEFAULT_DIR_FD;
     int follow_symlinks = CHMOD_DEFAULT_FOLLOW_SYMLINKS;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[4];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -674,12 +692,15 @@ os_fchmod(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     int fd;
     int mode;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -747,12 +768,15 @@ os_lchmod(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     path_t path = PATH_T_INITIALIZE_P("lchmod", "path", 0, 0, 0, 0);
     int mode;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -826,14 +850,17 @@ os_chflags(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     path_t path = PATH_T_INITIALIZE_P("chflags", "path", 0, 0, 0, 0);
     unsigned long flags;
     int follow_symlinks = 1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -927,12 +954,15 @@ os_lchflags(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     path_t path = PATH_T_INITIALIZE_P("lchflags", "path", 0, 0, 0, 0);
     unsigned long flags;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1015,11 +1045,14 @@ os_chroot(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     path_t path = PATH_T_INITIALIZE_P("chroot", "path", 0, 0, 0, 0);
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1082,11 +1115,14 @@ os_fsync(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int fd;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1169,11 +1205,14 @@ os_fdatasync(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int fd;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1259,7 +1298,6 @@ os_chown(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[5];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 3;
     path_t path = PATH_T_INITIALIZE_P("chown", "path", 0, 0, 0, PATH_HAVE_FCHOWN);
     uid_t uid;
@@ -1267,8 +1305,12 @@ os_chown(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
     int dir_fd = DEFAULT_DIR_FD;
     int follow_symlinks = 1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 3 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[5];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1355,13 +1397,16 @@ os_fchown(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     int fd;
     uid_t uid;
     gid_t gid;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 3 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1431,13 +1476,16 @@ os_lchown(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     path_t path = PATH_T_INITIALIZE_P("lchown", "path", 0, 0, 0, 0);
     uid_t uid;
     gid_t gid;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 3 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1554,7 +1602,6 @@ os_link(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwn
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[5];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     path_t src = PATH_T_INITIALIZE_P("link", "src", 0, 0, 0, 0);
     path_t dst = PATH_T_INITIALIZE_P("link", "dst", 0, 0, 0, 0);
@@ -1562,8 +1609,12 @@ os_link(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwn
     int dst_dir_fd = DEFAULT_DIR_FD;
     int follow_symlinks = -1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[5];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1664,12 +1715,15 @@ os_listdir(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     path_t path = PATH_T_INITIALIZE_P("listdir", "path", 1, 0, 0, PATH_HAVE_FDOPENDIR);
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1784,11 +1838,14 @@ os_listmounts(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     path_t volume = PATH_T_INITIALIZE_P("listmounts", "volume", 0, 0, 0, 0);
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1851,11 +1908,14 @@ os__path_isdevdrive(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     path_t path = PATH_T_INITIALIZE_P("_path_isdevdrive", "path", 0, 0, 0, 0);
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2019,11 +2079,14 @@ os__getvolumepathname(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     path_t path = PATH_T_INITIALIZE_P("_getvolumepathname", "path", 0, 0, 0, 0);
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2120,12 +2183,15 @@ os__path_exists(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     path_t path = PATH_T_INITIALIZE_P("_path_exists", "path", 0, 0, 1, 1);
     int _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2192,12 +2258,15 @@ os__path_lexists(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     path_t path = PATH_T_INITIALIZE_P("_path_lexists", "path", 0, 0, 1, 1);
     int _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2303,12 +2372,15 @@ os__path_isfile(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     path_t path = PATH_T_INITIALIZE_P("_path_isfile", "path", 0, 0, 1, 1);
     int _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2375,12 +2447,15 @@ os__path_islink(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     path_t path = PATH_T_INITIALIZE_P("_path_islink", "path", 0, 0, 1, 1);
     int _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2447,12 +2522,15 @@ os__path_isjunction(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     path_t path = PATH_T_INITIALIZE_P("_path_isjunction", "path", 0, 0, 1, 1);
     int _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2549,11 +2627,14 @@ os__path_normpath(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyO
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     path_t path = PATH_T_INITIALIZE("_path_normpath", "path", 0, 1, 1, 0, 0);
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2620,14 +2701,17 @@ os_mkdir(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     path_t path = PATH_T_INITIALIZE_P("mkdir", "path", 0, 0, 0, 0);
     int mode = 511;
     int dir_fd = DEFAULT_DIR_FD;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2740,12 +2824,15 @@ os_getpriority(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     int which;
     int who;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2810,13 +2897,16 @@ os_setpriority(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     int which;
     int who;
     int priority;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 3 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2890,15 +2980,18 @@ os_rename(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     path_t src = PATH_T_INITIALIZE_P("rename", "src", 0, 0, 0, 0);
     path_t dst = PATH_T_INITIALIZE_P("rename", "dst", 0, 0, 0, 0);
     int src_dir_fd = DEFAULT_DIR_FD;
     int dst_dir_fd = DEFAULT_DIR_FD;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[4];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -2984,15 +3077,18 @@ os_replace(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     path_t src = PATH_T_INITIALIZE_P("replace", "src", 0, 0, 0, 0);
     path_t dst = PATH_T_INITIALIZE_P("replace", "dst", 0, 0, 0, 0);
     int src_dir_fd = DEFAULT_DIR_FD;
     int dst_dir_fd = DEFAULT_DIR_FD;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[4];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -3076,13 +3172,16 @@ os_rmdir(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     path_t path = PATH_T_INITIALIZE_P("rmdir", "path", 0, 0, 0, 0);
     int dir_fd = DEFAULT_DIR_FD;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -3150,12 +3249,15 @@ os_system(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     const wchar_t *command = NULL;
     long _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -3227,12 +3329,15 @@ os_system(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *command = NULL;
     long _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -3334,13 +3439,16 @@ os_unlink(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     path_t path = PATH_T_INITIALIZE_P("unlink", "path", 0, 0, 0, 0);
     int dir_fd = DEFAULT_DIR_FD;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -3411,13 +3519,16 @@ os_remove(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     path_t path = PATH_T_INITIALIZE_P("remove", "path", 0, 0, 0, 0);
     int dir_fd = DEFAULT_DIR_FD;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -3532,7 +3643,6 @@ os_utime(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[5];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     path_t path = PATH_T_INITIALIZE_P("utime", "path", 0, 0, 0, PATH_UTIME_HAVE_FD);
     PyObject *times = Py_None;
@@ -3540,8 +3650,12 @@ os_utime(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
     int dir_fd = DEFAULT_DIR_FD;
     int follow_symlinks = 1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[5];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -3632,11 +3746,14 @@ os__exit(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int status;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -3746,13 +3863,16 @@ os_execve(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     path_t path = PATH_T_INITIALIZE_P("execve", "path", 0, 0, 0, PATH_HAVE_FEXECVE);
     PyObject *argv;
     PyObject *env;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 3 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -3844,7 +3964,6 @@ os_posix_spawn(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[10];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 3;
     path_t path = PATH_T_INITIALIZE_P("posix_spawn", "path", 0, 0, 0, 0);
     PyObject *argv;
@@ -3857,8 +3976,12 @@ os_posix_spawn(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
     PyObject *setsigdef = NULL;
     PyObject *scheduler = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 3 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[10];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -3997,7 +4120,6 @@ os_posix_spawnp(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[10];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 3;
     path_t path = PATH_T_INITIALIZE_P("posix_spawnp", "path", 0, 0, 0, 0);
     PyObject *argv;
@@ -4010,8 +4132,12 @@ os_posix_spawnp(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
     PyObject *setsigdef = NULL;
     PyObject *scheduler = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 3 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[10];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 3, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -4243,14 +4369,17 @@ os_register_at_fork(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *before = NULL;
     PyObject *after_in_child = NULL;
     PyObject *after_in_parent = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 0, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 0 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 0, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -4372,11 +4501,14 @@ os_sched_get_priority_max(PyObject *module, PyObject *const *args, Py_ssize_t na
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int policy;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -4437,11 +4569,14 @@ os_sched_get_priority_min(PyObject *module, PyObject *const *args, Py_ssize_t na
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int policy;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -4536,13 +4671,19 @@ os_sched_param(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     PyObject *sched_priority;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 1 > nargs || nargs > 1) {
+        PyObject *argsbuf[1];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -5404,11 +5545,14 @@ os_getpgid(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     pid_t pid;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -5918,11 +6062,14 @@ os_wait3(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int options;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -5986,12 +6133,15 @@ os_wait4(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     pid_t pid;
     int options;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -6229,13 +6379,16 @@ os_pidfd_open(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     pid_t pid;
     unsigned int flags = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -6308,13 +6461,16 @@ os_setns(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     int fd;
     int nstype = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -6386,11 +6542,14 @@ os_unshare(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int flags;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -6457,13 +6616,16 @@ os_readlink(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     path_t path = PATH_T_INITIALIZE_P("readlink", "path", 0, 0, 0, 0);
     int dir_fd = DEFAULT_DIR_FD;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -6544,15 +6706,18 @@ os_symlink(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     path_t src = PATH_T_INITIALIZE_P("symlink", "src", 0, 0, 0, 0);
     path_t dst = PATH_T_INITIALIZE_P("symlink", "dst", 0, 0, 0, 0);
     int target_is_directory = 0;
     int dir_fd = DEFAULT_DIR_FD;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[4];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -6678,13 +6843,16 @@ os_timerfd_create(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyO
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     int clockid;
     int flags = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -6763,15 +6931,18 @@ os_timerfd_settime(PyObject *module, PyObject *const *args, Py_ssize_t nargs, Py
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     int fd;
     int flags = 0;
     double initial_double = 0.0;
     double interval_double = 0.0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[4];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -6880,15 +7051,18 @@ os_timerfd_settime_ns(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     int fd;
     int flags = 0;
     long long initial = 0;
     long long interval = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[4];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -7214,7 +7388,6 @@ os_open(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwn
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     path_t path = PATH_T_INITIALIZE_P("open", "path", 0, 0, 0, 0);
     int flags;
@@ -7222,8 +7395,12 @@ os_open(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwn
     int dir_fd = DEFAULT_DIR_FD;
     int _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[4];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -7310,11 +7487,14 @@ os_close(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int fd;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -7442,15 +7622,18 @@ os_dup2(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwn
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     int fd;
     int fd2;
     int inheritable = 1;
     int _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -7958,7 +8141,6 @@ os_sendfile(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[7];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 4;
     int out_fd;
     int in_fd;
@@ -7968,8 +8150,12 @@ os_sendfile(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
     PyObject *trailers = NULL;
     int flags = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 4, /*maxpos*/ 7, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 4 > nargs || nargs > 7 || !args) {
+        PyObject *argsbuf[7];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 4, /*maxpos*/ 7, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -8063,7 +8249,6 @@ os_sendfile(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[7];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 4;
     int out_fd;
     int in_fd;
@@ -8073,8 +8258,12 @@ os_sendfile(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
     PyObject *trailers = NULL;
     int flags = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 4, /*maxpos*/ 7, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 4 > nargs || nargs > 7 || !args) {
+        PyObject *argsbuf[7];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 4, /*maxpos*/ 7, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -8175,14 +8364,17 @@ os_sendfile(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     int out_fd;
     int in_fd;
     PyObject *offobj;
     Py_ssize_t count;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 4, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 4 > nargs || nargs > 4 || !args) {
+        PyObject *argsbuf[4];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 4, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -8306,11 +8498,14 @@ os_fstat(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int fd;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -8657,7 +8852,6 @@ os_copy_file_range(PyObject *module, PyObject *const *args, Py_ssize_t nargs, Py
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[5];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 3;
     int src;
     int dst;
@@ -8665,8 +8859,12 @@ os_copy_file_range(PyObject *module, PyObject *const *args, Py_ssize_t nargs, Py
     PyObject *offset_src = Py_None;
     PyObject *offset_dst = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 3, /*maxpos*/ 5, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 3 > nargs || nargs > 5 || !args) {
+        PyObject *argsbuf[5];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 3, /*maxpos*/ 5, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -8774,7 +8972,6 @@ os_splice(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[6];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 3;
     int src;
     int dst;
@@ -8783,8 +8980,12 @@ os_splice(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
     PyObject *offset_dst = Py_None;
     unsigned int flags = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 3, /*maxpos*/ 6, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 3 > nargs || nargs > 6 || !args) {
+        PyObject *argsbuf[6];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 3, /*maxpos*/ 6, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -8885,14 +9086,17 @@ os_mkfifo(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     path_t path = PATH_T_INITIALIZE_P("mkfifo", "path", 0, 0, 0, 0);
     int mode = 438;
     int dir_fd = DEFAULT_DIR_FD;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -8988,15 +9192,18 @@ os_mknod(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     path_t path = PATH_T_INITIALIZE_P("mknod", "path", 0, 0, 0, 0);
     int mode = 384;
     dev_t device = 0;
     int dir_fd = DEFAULT_DIR_FD;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[4];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -9234,12 +9441,15 @@ os_truncate(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     path_t path = PATH_T_INITIALIZE_P("truncate", "path", 0, 0, 0, PATH_HAVE_FTRUNCATE);
     Py_off_t length;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -9629,12 +9839,15 @@ os_WIFCONTINUED(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int status;
     int _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -9699,12 +9912,15 @@ os_WIFSTOPPED(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int status;
     int _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -9769,12 +9985,15 @@ os_WIFSIGNALED(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int status;
     int _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -9839,12 +10058,15 @@ os_WIFEXITED(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int status;
     int _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -9909,12 +10131,15 @@ os_WEXITSTATUS(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int status;
     int _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -9979,12 +10204,15 @@ os_WTERMSIG(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int status;
     int _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -10049,12 +10277,15 @@ os_WSTOPSIG(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int status;
     int _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -10157,11 +10388,14 @@ os_statvfs(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     path_t path = PATH_T_INITIALIZE_P("statvfs", "path", 0, 0, 0, PATH_HAVE_FSTATVFS);
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -10224,11 +10458,14 @@ os__getdiskusage(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     path_t path = PATH_T_INITIALIZE_P("_getdiskusage", "path", 0, 0, 0, 0);
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -10341,13 +10578,16 @@ os_pathconf(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     path_t path = PATH_T_INITIALIZE_P("pathconf", "path", 0, 0, 0, PATH_HAVE_FPATHCONF);
     int name;
     long _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -10533,7 +10773,6 @@ os_startfile(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[5];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     path_t filepath = PATH_T_INITIALIZE_P("startfile", "filepath", 0, 0, 0, 0);
     const wchar_t *operation = NULL;
@@ -10541,8 +10780,12 @@ os_startfile(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
     path_t cwd = PATH_T_INITIALIZE_P("startfile", "cwd", 1, 0, 0, 0);
     int show_cmd = 1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 5, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 5 || !args) {
+        PyObject *argsbuf[5];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 5, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -10680,11 +10923,14 @@ os_device_encoding(PyObject *module, PyObject *const *args, Py_ssize_t nargs, Py
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int fd;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -10877,14 +11123,17 @@ os_getxattr(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     path_t path = PATH_T_INITIALIZE_P("getxattr", "path", 0, 0, 0, 1);
     path_t attribute = PATH_T_INITIALIZE_P("getxattr", "attribute", 0, 0, 0, 0);
     int follow_symlinks = 1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -10967,7 +11216,6 @@ os_setxattr(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[5];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 3;
     path_t path = PATH_T_INITIALIZE_P("setxattr", "path", 0, 0, 0, 1);
     path_t attribute = PATH_T_INITIALIZE_P("setxattr", "attribute", 0, 0, 0, 0);
@@ -10975,8 +11223,12 @@ os_setxattr(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
     int flags = 0;
     int follow_symlinks = 1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 3, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 3 > nargs || nargs > 4 || !args) {
+        PyObject *argsbuf[5];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 3, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -11078,14 +11330,17 @@ os_removexattr(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     path_t path = PATH_T_INITIALIZE_P("removexattr", "path", 0, 0, 0, 1);
     path_t attribute = PATH_T_INITIALIZE_P("removexattr", "attribute", 0, 0, 0, 0);
     int follow_symlinks = 1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -11167,13 +11422,16 @@ os_listxattr(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     path_t path = PATH_T_INITIALIZE_P("listxattr", "path", 1, 0, 0, 1);
     int follow_symlinks = 1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -11288,13 +11546,16 @@ os_memfd_create(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *name = NULL;
     unsigned int flags = MFD_CLOEXEC;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -11377,13 +11638,16 @@ os_eventfd(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     unsigned int initval;
     int flags = EFD_CLOEXEC;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -11451,11 +11715,14 @@ os_eventfd_read(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int fd;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -11516,12 +11783,15 @@ os_eventfd_write(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     int fd;
     unsigned long long value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -11936,12 +12206,15 @@ os_DirEntry_stat(PyObject *self, PyTypeObject *defining_class, PyObject *const *
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     int follow_symlinks = 1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 0, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 0 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 0, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -12003,13 +12276,16 @@ os_DirEntry_is_dir(PyObject *self, PyTypeObject *defining_class, PyObject *const
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     int follow_symlinks = 1;
     int _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 0, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 0 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 0, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -12075,13 +12351,16 @@ os_DirEntry_is_file(PyObject *self, PyTypeObject *defining_class, PyObject *cons
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     int follow_symlinks = 1;
     int _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 0, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 0 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 0, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -12188,12 +12467,15 @@ os_scandir(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     path_t path = PATH_T_INITIALIZE_P("scandir", "path", 1, 0, 0, PATH_HAVE_FDOPENDIR);
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -12260,11 +12542,14 @@ os_fspath(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *path;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -12320,13 +12605,16 @@ os_getrandom(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     Py_ssize_t size;
     int flags = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -12410,11 +12698,14 @@ os__add_dll_directory(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     path_t path = PATH_T_INITIALIZE_P("_add_dll_directory", "path", 0, 0, 0, 0);
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -12481,11 +12772,14 @@ os__remove_dll_directory(PyObject *module, PyObject *const *args, Py_ssize_t nar
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *cookie;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -12555,11 +12849,14 @@ os_waitstatus_to_exitcode(PyObject *module, PyObject *const *args, Py_ssize_t na
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *status_obj;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -12715,11 +13012,14 @@ os__emscripten_log(PyObject *module, PyObject *const *args, Py_ssize_t nargs, Py
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     const char *arg;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -13419,4 +13719,4 @@ os__emscripten_log(PyObject *module, PyObject *const *args, Py_ssize_t nargs, Py
 #ifndef OS__EMSCRIPTEN_LOG_METHODDEF
     #define OS__EMSCRIPTEN_LOG_METHODDEF
 #endif /* !defined(OS__EMSCRIPTEN_LOG_METHODDEF) */
-/*[clinic end generated code: output=b1e2615384347102 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=6a3570f43f734f1c input=a9049054013a1b77]*/
diff --git a/Modules/clinic/pyexpat.c.h b/Modules/clinic/pyexpat.c.h
index 13210e3be0f747..090a4fd612d738 100644
--- a/Modules/clinic/pyexpat.c.h
+++ b/Modules/clinic/pyexpat.c.h
@@ -87,12 +87,15 @@ pyexpat_xmlparser_Parse(PyObject *self, PyTypeObject *cls, PyObject *const *args
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject *data;
     int isfinal = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -141,11 +144,14 @@ pyexpat_xmlparser_ParseFile(PyObject *self, PyTypeObject *cls, PyObject *const *
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *file;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -265,12 +271,15 @@ pyexpat_xmlparser_ExternalEntityParserCreate(PyObject *self, PyTypeObject *cls,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     const char *context;
     const char *encoding = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -384,11 +393,14 @@ pyexpat_xmlparser_UseForeignDTD(PyObject *self, PyTypeObject *cls, PyObject *con
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int flag = 1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -453,14 +465,17 @@ pyexpat_ParserCreate(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     const char *encoding = NULL;
     const char *namespace_separator = NULL;
     PyObject *intern = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -552,4 +567,4 @@ pyexpat_ErrorString(PyObject *module, PyObject *arg)
 #ifndef PYEXPAT_XMLPARSER_USEFOREIGNDTD_METHODDEF
     #define PYEXPAT_XMLPARSER_USEFOREIGNDTD_METHODDEF
 #endif /* !defined(PYEXPAT_XMLPARSER_USEFOREIGNDTD_METHODDEF) */
-/*[clinic end generated code: output=4dbdc959c67dc2d5 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=c9727efc10c46dc9 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/selectmodule.c.h b/Modules/clinic/selectmodule.c.h
index c0a5f678ad038d..074889b73aed15 100644
--- a/Modules/clinic/selectmodule.c.h
+++ b/Modules/clinic/selectmodule.c.h
@@ -591,15 +591,21 @@ select_epoll(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 0;
     int sizehint = -1;
     int flags = 0;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 0 > nargs || nargs > 2) {
+        PyObject *argsbuf[2];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -766,13 +772,16 @@ select_epoll_register(PyObject *self, PyObject *const *args, Py_ssize_t nargs, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     int fd;
     unsigned int eventmask = EPOLLIN | EPOLLPRI | EPOLLOUT;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -859,12 +868,15 @@ select_epoll_modify(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyO
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     int fd;
     unsigned int eventmask;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -944,11 +956,14 @@ select_epoll_unregister(PyObject *self, PyObject *const *args, Py_ssize_t nargs,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int fd;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1019,13 +1034,16 @@ select_epoll_poll(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObj
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *timeout_obj = Py_None;
     int maxevents = -1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1399,4 +1417,4 @@ select_kqueue_control(PyObject *self, PyObject *const *args, Py_ssize_t nargs)
 #ifndef SELECT_KQUEUE_CONTROL_METHODDEF
     #define SELECT_KQUEUE_CONTROL_METHODDEF
 #endif /* !defined(SELECT_KQUEUE_CONTROL_METHODDEF) */
-/*[clinic end generated code: output=2a66dd831f22c696 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=5115f8686b085aea input=a9049054013a1b77]*/
diff --git a/Modules/clinic/sha1module.c.h b/Modules/clinic/sha1module.c.h
index 4a58d0cd9b82a4..91faf3db88ebef 100644
--- a/Modules/clinic/sha1module.c.h
+++ b/Modules/clinic/sha1module.c.h
@@ -132,14 +132,17 @@ _sha1_sha1(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *data = NULL;
     int usedforsecurity = 1;
     PyObject *string_obj = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -172,4 +175,4 @@ _sha1_sha1(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=fd5a917404b68c4f input=a9049054013a1b77]*/
+/*[clinic end generated code: output=5ad1c85844c76dc1 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/sha2module.c.h b/Modules/clinic/sha2module.c.h
index 07be91e4f6c68f..520d0aaa0f3e14 100644
--- a/Modules/clinic/sha2module.c.h
+++ b/Modules/clinic/sha2module.c.h
@@ -212,14 +212,17 @@ _sha2_sha256(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *data = NULL;
     int usedforsecurity = 1;
     PyObject *string_obj = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -297,14 +300,17 @@ _sha2_sha224(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *data = NULL;
     int usedforsecurity = 1;
     PyObject *string_obj = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -382,14 +388,17 @@ _sha2_sha512(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *data = NULL;
     int usedforsecurity = 1;
     PyObject *string_obj = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -467,14 +476,17 @@ _sha2_sha384(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *data = NULL;
     int usedforsecurity = 1;
     PyObject *string_obj = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -507,4 +519,4 @@ _sha2_sha384(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=90625b237c774a9f input=a9049054013a1b77]*/
+/*[clinic end generated code: output=c77f70b2173f8067 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/sha3module.c.h b/Modules/clinic/sha3module.c.h
index 1f631ff406e25b..67772c2c874816 100644
--- a/Modules/clinic/sha3module.c.h
+++ b/Modules/clinic/sha3module.c.h
@@ -50,7 +50,6 @@ py_sha3_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 0;
@@ -58,8 +57,15 @@ py_sha3_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
     int usedforsecurity = 1;
     PyObject *string = NULL;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 0 > nargs || nargs > 1) {
+        PyObject *argsbuf[3];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -216,11 +222,14 @@ _sha3_shake_128_digest(PyObject *self, PyObject *const *args, Py_ssize_t nargs,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t length;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -285,11 +294,14 @@ _sha3_shake_128_hexdigest(PyObject *self, PyObject *const *args, Py_ssize_t narg
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t length;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -310,4 +322,4 @@ _sha3_shake_128_hexdigest(PyObject *self, PyObject *const *args, Py_ssize_t narg
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=48be77f8a31e8a3e input=a9049054013a1b77]*/
+/*[clinic end generated code: output=c3295872b837ad76 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/signalmodule.c.h b/Modules/clinic/signalmodule.c.h
index b0cd9e2e561640..dc69f17a9b0e7d 100644
--- a/Modules/clinic/signalmodule.c.h
+++ b/Modules/clinic/signalmodule.c.h
@@ -329,13 +329,16 @@ signal_set_wakeup_fd(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *fdobj;
     int warn_on_full_buffer = 1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -794,4 +797,4 @@ signal_pidfd_send_signal(PyObject *module, PyObject *const *args, Py_ssize_t nar
 #ifndef SIGNAL_PIDFD_SEND_SIGNAL_METHODDEF
     #define SIGNAL_PIDFD_SEND_SIGNAL_METHODDEF
 #endif /* !defined(SIGNAL_PIDFD_SEND_SIGNAL_METHODDEF) */
-/*[clinic end generated code: output=37ae8ebeae4178fa input=a9049054013a1b77]*/
+/*[clinic end generated code: output=68c785b8e0432ab2 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/socketmodule.c.h b/Modules/clinic/socketmodule.c.h
index 0cedab597db714..41639a494d1b0f 100644
--- a/Modules/clinic/socketmodule.c.h
+++ b/Modules/clinic/socketmodule.c.h
@@ -228,7 +228,6 @@ sock_initobj(PyObject *self, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 0;
@@ -237,8 +236,15 @@ sock_initobj(PyObject *self, PyObject *args, PyObject *kwargs)
     int proto = -1;
     PyObject *fdobj = NULL;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 0 > nargs || nargs > 4) {
+        PyObject *argsbuf[4];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -538,4 +544,4 @@ _socket_if_indextoname(PyObject *module, PyObject *arg)
 #ifndef _SOCKET_IF_INDEXTONAME_METHODDEF
     #define _SOCKET_IF_INDEXTONAME_METHODDEF
 #endif /* !defined(_SOCKET_IF_INDEXTONAME_METHODDEF) */
-/*[clinic end generated code: output=0376c46b76ae2bce input=a9049054013a1b77]*/
+/*[clinic end generated code: output=bad727cc18c580a1 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/syslogmodule.c.h b/Modules/clinic/syslogmodule.c.h
index f9034982f3b2c7..a54e7977fd2cdb 100644
--- a/Modules/clinic/syslogmodule.c.h
+++ b/Modules/clinic/syslogmodule.c.h
@@ -54,14 +54,17 @@ syslog_openlog(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *ident = NULL;
     long logopt = 0;
     long facility = LOG_USER;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -265,4 +268,4 @@ syslog_LOG_UPTO(PyObject *module, PyObject *arg)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=f92ac9948fa6131e input=a9049054013a1b77]*/
+/*[clinic end generated code: output=186847aa26abd70e input=a9049054013a1b77]*/
diff --git a/Modules/clinic/zlibmodule.c.h b/Modules/clinic/zlibmodule.c.h
index 016af258d63dea..56e33df03a69b1 100644
--- a/Modules/clinic/zlibmodule.c.h
+++ b/Modules/clinic/zlibmodule.c.h
@@ -59,14 +59,17 @@ zlib_compress(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     Py_buffer data = {NULL, NULL};
     int level = Z_DEFAULT_COMPRESSION;
     int wbits = MAX_WBITS;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -152,14 +155,17 @@ zlib_decompress(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     Py_buffer data = {NULL, NULL};
     int wbits = MAX_WBITS;
     Py_ssize_t bufsize = DEF_BUF_SIZE;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -270,7 +276,6 @@ zlib_compressobj(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[6];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     int level = Z_DEFAULT_COMPRESSION;
     int method = DEFLATED;
@@ -279,8 +284,12 @@ zlib_compressobj(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
     int strategy = Z_DEFAULT_STRATEGY;
     Py_buffer zdict = {NULL, NULL};
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 6, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 6 || !args) {
+        PyObject *argsbuf[6];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 6, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -396,13 +405,16 @@ zlib_decompressobj(PyObject *module, PyObject *const *args, Py_ssize_t nargs, Py
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     int wbits = MAX_WBITS;
     PyObject *zdict = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -463,11 +475,14 @@ zlib_Compress_compress(PyObject *self, PyTypeObject *cls, PyObject *const *args,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_buffer data = {NULL, NULL};
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -540,13 +555,16 @@ zlib_Decompress_decompress(PyObject *self, PyTypeObject *cls, PyObject *const *a
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     Py_buffer data = {NULL, NULL};
     Py_ssize_t max_length = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -615,11 +633,14 @@ zlib_Compress_flush(PyObject *self, PyTypeObject *cls, PyObject *const *args, Py
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int mode = Z_FINISH;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -719,11 +740,14 @@ zlib_Compress___deepcopy__(PyObject *self, PyTypeObject *cls, PyObject *const *a
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *memo;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -818,11 +842,14 @@ zlib_Decompress___deepcopy__(PyObject *self, PyTypeObject *cls, PyObject *const
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *memo;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -868,11 +895,14 @@ zlib_Decompress_flush(PyObject *self, PyTypeObject *cls, PyObject *const *args,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t length = DEF_BUF_SIZE;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -955,13 +985,16 @@ zlib_ZlibDecompressor_decompress(PyObject *self, PyObject *const *args, Py_ssize
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     Py_buffer data = {NULL, NULL};
     Py_ssize_t max_length = -1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1311,4 +1344,4 @@ zlib_crc32_combine(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 #ifndef ZLIB_DECOMPRESS___DEEPCOPY___METHODDEF
     #define ZLIB_DECOMPRESS___DEEPCOPY___METHODDEF
 #endif /* !defined(ZLIB_DECOMPRESS___DEEPCOPY___METHODDEF) */
-/*[clinic end generated code: output=3054c8894aa44568 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=17594719871e7016 input=a9049054013a1b77]*/
diff --git a/Objects/clinic/bytearrayobject.c.h b/Objects/clinic/bytearrayobject.c.h
index ffb45ade11f6dc..15070919ff149f 100644
--- a/Objects/clinic/bytearrayobject.c.h
+++ b/Objects/clinic/bytearrayobject.c.h
@@ -45,7 +45,6 @@ bytearray___init__(PyObject *self, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 0;
@@ -53,8 +52,15 @@ bytearray___init__(PyObject *self, PyObject *args, PyObject *kwargs)
     const char *encoding = NULL;
     const char *errors = NULL;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 0 > nargs || nargs > 3) {
+        PyObject *argsbuf[3];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -681,13 +687,16 @@ bytearray_translate(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyO
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *table;
     PyObject *deletechars = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -875,13 +884,16 @@ bytearray_split(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObjec
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *sep = Py_None;
     Py_ssize_t maxsplit = -1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1032,13 +1044,16 @@ bytearray_rsplit(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObje
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *sep = Py_None;
     Py_ssize_t maxsplit = -1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1449,13 +1464,16 @@ bytearray_decode(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObje
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     const char *encoding = NULL;
     const char *errors = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1576,12 +1594,15 @@ bytearray_splitlines(PyObject *self, PyObject *const *args, Py_ssize_t nargs, Py
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     int keepends = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1686,13 +1707,16 @@ bytearray_hex(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *sep = NULL;
     int bytes_per_sep = 1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1796,4 +1820,4 @@ bytearray_sizeof(PyObject *self, PyObject *Py_UNUSED(ignored))
 {
     return bytearray_sizeof_impl((PyByteArrayObject *)self);
 }
-/*[clinic end generated code: output=be6d28193bc96a2c input=a9049054013a1b77]*/
+/*[clinic end generated code: output=64bb08066b66c635 input=a9049054013a1b77]*/
diff --git a/Objects/clinic/bytesobject.c.h b/Objects/clinic/bytesobject.c.h
index 00cf13d422d900..e137f173fa7c75 100644
--- a/Objects/clinic/bytesobject.c.h
+++ b/Objects/clinic/bytesobject.c.h
@@ -78,13 +78,16 @@ bytes_split(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObject *k
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *sep = Py_None;
     Py_ssize_t maxsplit = -1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -247,13 +250,16 @@ bytes_rsplit(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObject *
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *sep = Py_None;
     Py_ssize_t maxsplit = -1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -718,13 +724,16 @@ bytes_translate(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObjec
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *table;
     PyObject *deletechars = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1082,13 +1091,16 @@ bytes_decode(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObject *
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     const char *encoding = NULL;
     const char *errors = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1179,12 +1191,15 @@ bytes_splitlines(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObje
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     int keepends = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1287,13 +1302,16 @@ bytes_hex(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObject *kwn
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *sep = NULL;
     int bytes_per_sep = 1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1352,7 +1370,6 @@ bytes_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 0;
@@ -1360,8 +1377,15 @@ bytes_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
     const char *encoding = NULL;
     const char *errors = NULL;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 0 > nargs || nargs > 3) {
+        PyObject *argsbuf[3];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -1411,4 +1435,4 @@ bytes_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=08b9507244f73638 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=bba335d5a91948b0 input=a9049054013a1b77]*/
diff --git a/Objects/clinic/codeobject.c.h b/Objects/clinic/codeobject.c.h
index 0cd6e0b56620e8..aec8572955671d 100644
--- a/Objects/clinic/codeobject.c.h
+++ b/Objects/clinic/codeobject.c.h
@@ -204,7 +204,6 @@ code_replace(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObject *
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[18];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     int co_argcount = ((PyCodeObject *)self)->co_argcount;
     int co_posonlyargcount = ((PyCodeObject *)self)->co_posonlyargcount;
@@ -225,8 +224,12 @@ code_replace(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObject *
     PyObject *co_linetable = ((PyCodeObject *)self)->co_linetable;
     PyObject *co_exceptiontable = ((PyCodeObject *)self)->co_exceptiontable;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 0, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 0 || !args) {
+        PyObject *argsbuf[18];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 0, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -453,11 +456,14 @@ code__varname_from_oparg(PyObject *self, PyObject *const *args, Py_ssize_t nargs
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int oparg;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -470,4 +476,4 @@ code__varname_from_oparg(PyObject *self, PyObject *const *args, Py_ssize_t nargs
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=c5c6e40fc357defe input=a9049054013a1b77]*/
+/*[clinic end generated code: output=271916d5ae080b07 input=a9049054013a1b77]*/
diff --git a/Objects/clinic/complexobject.c.h b/Objects/clinic/complexobject.c.h
index c7303380de55f4..09490b94673ea0 100644
--- a/Objects/clinic/complexobject.c.h
+++ b/Objects/clinic/complexobject.c.h
@@ -135,15 +135,21 @@ complex_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 0;
     PyObject *r = NULL;
     PyObject *i = NULL;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 0 > nargs || nargs > 2) {
+        PyObject *argsbuf[2];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -185,4 +191,4 @@ complex_from_number(PyObject *type, PyObject *number)
 
     return return_value;
 }
-/*[clinic end generated code: output=05d2ff43fc409733 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=e589b5de90763a32 input=a9049054013a1b77]*/
diff --git a/Objects/clinic/descrobject.c.h b/Objects/clinic/descrobject.c.h
index a0cfbeca84db12..61541978d7dfcb 100644
--- a/Objects/clinic/descrobject.c.h
+++ b/Objects/clinic/descrobject.c.h
@@ -48,13 +48,19 @@ mappingproxy_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     PyObject *mapping;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 1 > nargs || nargs > 1) {
+        PyObject *argsbuf[1];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -137,7 +143,6 @@ property_init(PyObject *self, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 0;
@@ -146,8 +151,15 @@ property_init(PyObject *self, PyObject *args, PyObject *kwargs)
     PyObject *fdel = NULL;
     PyObject *doc = NULL;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 0 > nargs || nargs > 4) {
+        PyObject *argsbuf[4];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -179,4 +191,4 @@ property_init(PyObject *self, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=2e8df497abc4f915 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=d43c3b9f805bd5f3 input=a9049054013a1b77]*/
diff --git a/Objects/clinic/enumobject.c.h b/Objects/clinic/enumobject.c.h
index 29ff11e89b9d1d..57b7e37b697920 100644
--- a/Objects/clinic/enumobject.c.h
+++ b/Objects/clinic/enumobject.c.h
@@ -57,15 +57,21 @@ enum_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 1;
     PyObject *iterable;
     PyObject *start = 0;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 1 > nargs || nargs > 2) {
+        PyObject *argsbuf[2];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -110,4 +116,4 @@ reversed_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=3300305b351674d3 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=f0821abe41d002a9 input=a9049054013a1b77]*/
diff --git a/Objects/clinic/funcobject.c.h b/Objects/clinic/funcobject.c.h
index fec743146466a4..6b67a951d14f3c 100644
--- a/Objects/clinic/funcobject.c.h
+++ b/Objects/clinic/funcobject.c.h
@@ -236,7 +236,6 @@ func_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[6];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 2;
@@ -247,8 +246,15 @@ func_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
     PyObject *closure = Py_None;
     PyObject *kwdefaults = Py_None;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 6, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 2 > nargs || nargs > 6) {
+        PyObject *argsbuf[6];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 6, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -290,4 +296,4 @@ func_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=12cb900088d41bdb input=a9049054013a1b77]*/
+/*[clinic end generated code: output=9351cca350896a9d input=a9049054013a1b77]*/
diff --git a/Objects/clinic/interpolationobject.c.h b/Objects/clinic/interpolationobject.c.h
index 2030e17e49e47a..5cfe023f7b6aa0 100644
--- a/Objects/clinic/interpolationobject.c.h
+++ b/Objects/clinic/interpolationobject.c.h
@@ -44,7 +44,6 @@ interpolation_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 1;
@@ -53,8 +52,15 @@ interpolation_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
     PyObject *conversion = Py_None;
     PyObject *format_spec = &_Py_STR(empty);
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 1 > nargs || nargs > 4) {
+        PyObject *argsbuf[4];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -91,4 +97,4 @@ interpolation_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=2391391e2d7708c0 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=693a99c41ef77c73 input=a9049054013a1b77]*/
diff --git a/Objects/clinic/listobject.c.h b/Objects/clinic/listobject.c.h
index 26ba5b954336da..c9f16129ba8e47 100644
--- a/Objects/clinic/listobject.c.h
+++ b/Objects/clinic/listobject.c.h
@@ -245,13 +245,16 @@ list_sort(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObject *kwn
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *keyfunc = Py_None;
     int reverse = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 0, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 0 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 0, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -468,4 +471,4 @@ list___reversed__(PyObject *self, PyObject *Py_UNUSED(ignored))
 {
     return list___reversed___impl((PyListObject *)self);
 }
-/*[clinic end generated code: output=ae13fc2b56dc27c2 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=c5f3b010f042132c input=a9049054013a1b77]*/
diff --git a/Objects/clinic/longobject.c.h b/Objects/clinic/longobject.c.h
index a236a32c091c4c..bda88a607b47bd 100644
--- a/Objects/clinic/longobject.c.h
+++ b/Objects/clinic/longobject.c.h
@@ -43,15 +43,21 @@ long_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 0;
     PyObject *x = NULL;
     PyObject *obase = NULL;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 0 > nargs || nargs > 2) {
+        PyObject *argsbuf[2];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -314,14 +320,17 @@ int_to_bytes(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObject *
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     Py_ssize_t length = 1;
     PyObject *byteorder = NULL;
     int is_signed = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -428,14 +437,17 @@ int_from_bytes(PyObject *type, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *bytes_obj;
     PyObject *byteorder = NULL;
     int is_signed = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -485,4 +497,4 @@ int_is_integer(PyObject *self, PyObject *Py_UNUSED(ignored))
 {
     return int_is_integer_impl(self);
 }
-/*[clinic end generated code: output=d23f8ce5bdf08a30 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=0d1dd198cc9e5f89 input=a9049054013a1b77]*/
diff --git a/Objects/clinic/memoryobject.c.h b/Objects/clinic/memoryobject.c.h
index 28cfd1a22080c9..fc134cdcde39e6 100644
--- a/Objects/clinic/memoryobject.c.h
+++ b/Objects/clinic/memoryobject.c.h
@@ -48,13 +48,19 @@ memoryview(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     PyObject *object;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 1 > nargs || nargs > 1) {
+        PyObject *argsbuf[1];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -108,12 +114,15 @@ memoryview__from_flags(PyObject *type, PyObject *const *args, Py_ssize_t nargs,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject *object;
     int flags;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -190,13 +199,16 @@ memoryview_cast(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObjec
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *format;
     PyObject *shape = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -301,12 +313,15 @@ memoryview_tobytes(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyOb
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     const char *order = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -399,13 +414,16 @@ memoryview_hex(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *sep = NULL;
     int bytes_per_sep = 1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -496,4 +514,4 @@ memoryview_index(PyObject *self, PyObject *const *args, Py_ssize_t nargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=154f4c04263ccb24 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=b907e2d8e907f60a input=a9049054013a1b77]*/
diff --git a/Objects/clinic/moduleobject.c.h b/Objects/clinic/moduleobject.c.h
index 455b883c52e31a..583db5a9659b75 100644
--- a/Objects/clinic/moduleobject.c.h
+++ b/Objects/clinic/moduleobject.c.h
@@ -50,15 +50,21 @@ module___init__(PyObject *self, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 1;
     PyObject *name;
     PyObject *doc = Py_None;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 1 > nargs || nargs > 2) {
+        PyObject *argsbuf[2];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -77,4 +83,4 @@ module___init__(PyObject *self, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=523344ad09ab2ea1 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=39fcf2b3ee7f19d4 input=a9049054013a1b77]*/
diff --git a/Objects/clinic/odictobject.c.h b/Objects/clinic/odictobject.c.h
index e71c29a1b268d0..14a45389d105c4 100644
--- a/Objects/clinic/odictobject.c.h
+++ b/Objects/clinic/odictobject.c.h
@@ -51,13 +51,16 @@ OrderedDict_fromkeys(PyObject *type, PyObject *const *args, Py_ssize_t nargs, Py
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *seq;
     PyObject *value = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -119,13 +122,16 @@ OrderedDict_setdefault(PyObject *self, PyObject *const *args, Py_ssize_t nargs,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *key;
     PyObject *default_value = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -188,13 +194,16 @@ OrderedDict_pop(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObjec
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *key;
     PyObject *default_value = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -255,12 +264,15 @@ OrderedDict_popitem(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyO
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     int last = 1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -323,13 +335,16 @@ OrderedDict_move_to_end(PyObject *self, PyObject *const *args, Py_ssize_t nargs,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *key;
     int last = 1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -347,4 +362,4 @@ OrderedDict_move_to_end(PyObject *self, PyObject *const *args, Py_ssize_t nargs,
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=7d8206823bb1f419 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=d13ab2895bd422e8 input=a9049054013a1b77]*/
diff --git a/Objects/clinic/structseq.c.h b/Objects/clinic/structseq.c.h
index 9642b480fa18b9..eda30605ef5b7a 100644
--- a/Objects/clinic/structseq.c.h
+++ b/Objects/clinic/structseq.c.h
@@ -42,15 +42,21 @@ structseq_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 1;
     PyObject *arg;
     PyObject *dict = NULL;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 1 > nargs || nargs > 2) {
+        PyObject *argsbuf[2];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -65,4 +71,4 @@ structseq_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=112d59f5e98d652b input=a9049054013a1b77]*/
+/*[clinic end generated code: output=eb286bbdd228533f input=a9049054013a1b77]*/
diff --git a/Objects/clinic/typevarobject.c.h b/Objects/clinic/typevarobject.c.h
index 9ae2f51f758403..f149d8c310475c 100644
--- a/Objects/clinic/typevarobject.c.h
+++ b/Objects/clinic/typevarobject.c.h
@@ -51,7 +51,6 @@ typevar_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[6];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = Py_MIN(nargs, 1) + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 1;
@@ -63,8 +62,15 @@ typevar_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
     int contravariant = 0;
     int infer_variance = 0;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 1, argsbuf);
+    if (kwargs || 1 > nargs || nargs > 1) {
+        PyObject *argsbuf[6];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 1, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -249,13 +255,19 @@ paramspecargs_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     PyObject *origin;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 1 > nargs || nargs > 1) {
+        PyObject *argsbuf[1];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -306,13 +318,19 @@ paramspeckwargs_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     PyObject *origin;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 1 > nargs || nargs > 1) {
+        PyObject *argsbuf[1];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -366,7 +384,6 @@ paramspec_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[6];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 1;
@@ -377,8 +394,15 @@ paramspec_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
     int contravariant = 0;
     int infer_variance = 0;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 1 > nargs || nargs > 1) {
+        PyObject *argsbuf[6];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -557,15 +581,21 @@ typevartuple(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 1;
     PyObject *name;
     PyObject *default_value = &_Py_NoDefaultStruct;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 1 > nargs || nargs > 1) {
+        PyObject *argsbuf[2];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -728,7 +758,6 @@ typealias_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 2;
@@ -736,8 +765,15 @@ typealias_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
     PyObject *value;
     PyObject *type_params = NULL;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 2 > nargs || nargs > 2) {
+        PyObject *argsbuf[3];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -757,4 +793,4 @@ typealias_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=9dad71445e079303 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=7e5f430f425aee42 input=a9049054013a1b77]*/
diff --git a/Objects/clinic/unicodeobject.c.h b/Objects/clinic/unicodeobject.c.h
index 1819fbaea220a3..e75d3cb488d211 100644
--- a/Objects/clinic/unicodeobject.c.h
+++ b/Objects/clinic/unicodeobject.c.h
@@ -243,13 +243,16 @@ unicode_encode(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     const char *encoding = NULL;
     const char *errors = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -339,12 +342,15 @@ unicode_expandtabs(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyOb
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     int tabsize = 8;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -959,14 +965,17 @@ unicode_replace(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObjec
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     PyObject *old;
     PyObject *new;
     Py_ssize_t count = -1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1287,13 +1296,16 @@ unicode_split(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *sep = Py_None;
     Py_ssize_t maxsplit = -1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1412,13 +1424,16 @@ unicode_rsplit(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     PyObject *sep = Py_None;
     Py_ssize_t maxsplit = -1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1496,12 +1511,15 @@ unicode_splitlines(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyOb
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     int keepends = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1849,7 +1867,6 @@ unicode_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 0;
@@ -1857,8 +1874,15 @@ unicode_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
     const char *encoding = NULL;
     const char *errors = NULL;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 0 > nargs || nargs > 3) {
+        PyObject *argsbuf[3];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -1908,4 +1932,4 @@ unicode_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=238917fe66120bde input=a9049054013a1b77]*/
+/*[clinic end generated code: output=354b47f65e957cfa input=a9049054013a1b77]*/
diff --git a/Objects/stringlib/clinic/transmogrify.h.h b/Objects/stringlib/clinic/transmogrify.h.h
index 588fc101dbb5e3..7df4c76848c837 100644
--- a/Objects/stringlib/clinic/transmogrify.h.h
+++ b/Objects/stringlib/clinic/transmogrify.h.h
@@ -54,12 +54,15 @@ stringlib_expandtabs(PyObject *self, PyObject *const *args, Py_ssize_t nargs, Py
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     int tabsize = 8;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -324,4 +327,4 @@ stringlib_zfill(PyObject *self, PyObject *arg)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=8363b4b6cdaad556 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=68004e6dc26952bf input=a9049054013a1b77]*/
diff --git a/PC/clinic/_wmimodule.cpp.h b/PC/clinic/_wmimodule.cpp.h
index 38d52d0329dcc0..04b474ec65b149 100644
--- a/PC/clinic/_wmimodule.cpp.h
+++ b/PC/clinic/_wmimodule.cpp.h
@@ -54,11 +54,14 @@ _wmi_exec_query(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *query;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -72,4 +75,4 @@ _wmi_exec_query(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=802bcbcba69e8d0e input=a9049054013a1b77]*/
+/*[clinic end generated code: output=7b6a1bbc37e09e08 input=a9049054013a1b77]*/
diff --git a/PC/clinic/winreg.c.h b/PC/clinic/winreg.c.h
index 45d54e3c90289a..a5ab6d62912c2c 100644
--- a/PC/clinic/winreg.c.h
+++ b/PC/clinic/winreg.c.h
@@ -345,7 +345,6 @@ winreg_CreateKeyEx(PyObject *module, PyObject *const *args, Py_ssize_t nargs, Py
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     HKEY key;
     const wchar_t *sub_key = NULL;
@@ -353,8 +352,12 @@ winreg_CreateKeyEx(PyObject *module, PyObject *const *args, Py_ssize_t nargs, Py
     REGSAM access = KEY_WRITE;
     HKEY _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 4 || !args) {
+        PyObject *argsbuf[4];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -532,15 +535,18 @@ winreg_DeleteKeyEx(PyObject *module, PyObject *const *args, Py_ssize_t nargs, Py
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     HKEY key;
     const wchar_t *sub_key = NULL;
     REGSAM access = KEY_WOW64_64KEY;
     int reserved = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 4 || !args) {
+        PyObject *argsbuf[4];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -966,7 +972,6 @@ winreg_OpenKey(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     HKEY key;
     const wchar_t *sub_key = NULL;
@@ -974,8 +979,12 @@ winreg_OpenKey(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
     REGSAM access = KEY_READ;
     HKEY _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 4 || !args) {
+        PyObject *argsbuf[4];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1086,7 +1095,6 @@ winreg_OpenKeyEx(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     HKEY key;
     const wchar_t *sub_key = NULL;
@@ -1094,8 +1102,12 @@ winreg_OpenKeyEx(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
     REGSAM access = KEY_READ;
     HKEY _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 4 || !args) {
+        PyObject *argsbuf[4];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1774,4 +1786,4 @@ winreg_QueryReflectionKey(PyObject *module, PyObject *arg)
 #ifndef WINREG_QUERYREFLECTIONKEY_METHODDEF
     #define WINREG_QUERYREFLECTIONKEY_METHODDEF
 #endif /* !defined(WINREG_QUERYREFLECTIONKEY_METHODDEF) */
-/*[clinic end generated code: output=be4b6857b95558b5 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=d28b817f929fb056 input=a9049054013a1b77]*/
diff --git a/Python/clinic/Python-tokenize.c.h b/Python/clinic/Python-tokenize.c.h
index 9e64c2055a8db6..e7d8e3102df8fe 100644
--- a/Python/clinic/Python-tokenize.c.h
+++ b/Python/clinic/Python-tokenize.c.h
@@ -43,10 +43,10 @@ tokenizeriter_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 2;
+    PyObject *argsbuf[3];
     PyObject *readline;
     int extra_tokens;
     const char *encoding = NULL;
@@ -83,4 +83,4 @@ tokenizeriter_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=4c448f34d9c835c0 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=efebc406c48474a8 input=a9049054013a1b77]*/
diff --git a/Python/clinic/_warnings.c.h b/Python/clinic/_warnings.c.h
index 8bda830ccb924e..b08ca37781e3ee 100644
--- a/Python/clinic/_warnings.c.h
+++ b/Python/clinic/_warnings.c.h
@@ -102,7 +102,6 @@ warnings_warn(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[5];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *message;
     PyObject *category = Py_None;
@@ -110,8 +109,12 @@ warnings_warn(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
     PyObject *source = Py_None;
     PyTupleObject *skip_file_prefixes = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 4 || !args) {
+        PyObject *argsbuf[5];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -212,7 +215,6 @@ warnings_warn_explicit(PyObject *module, PyObject *const *args, Py_ssize_t nargs
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[8];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 4;
     PyObject *message;
     PyObject *category;
@@ -223,8 +225,12 @@ warnings_warn_explicit(PyObject *module, PyObject *const *args, Py_ssize_t nargs
     PyObject *module_globals = Py_None;
     PyObject *sourceobj = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 4, /*maxpos*/ 8, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 4 > nargs || nargs > 8 || !args) {
+        PyObject *argsbuf[8];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 4, /*maxpos*/ 8, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -284,4 +290,4 @@ warnings_filters_mutated_lock_held(PyObject *module, PyObject *Py_UNUSED(ignored
 {
     return warnings_filters_mutated_lock_held_impl(module);
 }
-/*[clinic end generated code: output=610ed5764bf40bb5 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=adea2e6cc7908afb input=a9049054013a1b77]*/
diff --git a/Python/clinic/bltinmodule.c.h b/Python/clinic/bltinmodule.c.h
index c826a5724f769c..7296646d4d4b07 100644
--- a/Python/clinic/bltinmodule.c.h
+++ b/Python/clinic/bltinmodule.c.h
@@ -67,7 +67,6 @@ builtin___import__(PyObject *module, PyObject *const *args, Py_ssize_t nargs, Py
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[5];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *name;
     PyObject *globals = NULL;
@@ -75,8 +74,12 @@ builtin___import__(PyObject *module, PyObject *const *args, Py_ssize_t nargs, Py
     PyObject *fromlist = NULL;
     int level = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 5, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 5 || !args) {
+        PyObject *argsbuf[5];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 5, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -293,7 +296,6 @@ builtin_compile(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[7];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 3;
     PyObject *source;
     PyObject *filename;
@@ -303,8 +305,12 @@ builtin_compile(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
     int optimize = -1;
     int feature_version = -1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 3, /*maxpos*/ 6, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 3 > nargs || nargs > 6 || !args) {
+        PyObject *argsbuf[7];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 3, /*maxpos*/ 6, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -450,14 +456,17 @@ builtin_eval(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *source;
     PyObject *globals = Py_None;
     PyObject *locals = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -531,15 +540,18 @@ builtin_exec(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *source;
     PyObject *globals = Py_None;
     PyObject *locals = Py_None;
     PyObject *closure = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[4];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -886,14 +898,17 @@ builtin_pow(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     PyObject *base;
     PyObject *exp;
     PyObject *mod = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -964,9 +979,9 @@ builtin_print(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     PyObject * const *fastargs;
     Py_ssize_t noptargs = 0 + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
+    PyObject *argsbuf[4];
     PyObject * const *__clinic_args;
     Py_ssize_t args_length;
     PyObject *sep = Py_None;
@@ -1108,13 +1123,16 @@ builtin_round(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *number;
     PyObject *ndigits = Py_None;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1177,13 +1195,16 @@ builtin_sum(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *iterable;
     PyObject *start = NULL;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1268,4 +1289,4 @@ builtin_issubclass(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=e7a5d0851d7f2cfb input=a9049054013a1b77]*/
+/*[clinic end generated code: output=7267a8b8ff958ff4 input=a9049054013a1b77]*/
diff --git a/Python/clinic/import.c.h b/Python/clinic/import.c.h
index 9bbb13f7566517..0781ddc62d77db 100644
--- a/Python/clinic/import.c.h
+++ b/Python/clinic/import.c.h
@@ -220,13 +220,16 @@ _imp_find_frozen(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *name;
     int withdata = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -595,12 +598,15 @@ _imp_source_hash(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     long key;
     Py_buffer source = {NULL, NULL};
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -629,4 +635,4 @@ _imp_source_hash(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
 #ifndef _IMP_EXEC_DYNAMIC_METHODDEF
     #define _IMP_EXEC_DYNAMIC_METHODDEF
 #endif /* !defined(_IMP_EXEC_DYNAMIC_METHODDEF) */
-/*[clinic end generated code: output=24f597d6b0f3feed input=a9049054013a1b77]*/
+/*[clinic end generated code: output=619ae07038926c44 input=a9049054013a1b77]*/
diff --git a/Python/clinic/instruction_sequence.c.h b/Python/clinic/instruction_sequence.c.h
index f780627bae6ed8..79a83927435b93 100644
--- a/Python/clinic/instruction_sequence.c.h
+++ b/Python/clinic/instruction_sequence.c.h
@@ -81,11 +81,14 @@ InstructionSequenceType_use_label(PyObject *self, PyObject *const *args, Py_ssiz
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int label;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -145,7 +148,6 @@ InstructionSequenceType_addop(PyObject *self, PyObject *const *args, Py_ssize_t
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[6];
     int opcode;
     int oparg;
     int lineno;
@@ -153,8 +155,12 @@ InstructionSequenceType_addop(PyObject *self, PyObject *const *args, Py_ssize_t
     int end_lineno;
     int end_col_offset;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 6, /*maxpos*/ 6, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 6 > nargs || nargs > 6 || !args) {
+        PyObject *argsbuf[6];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 6, /*maxpos*/ 6, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -260,11 +266,14 @@ InstructionSequenceType_add_nested(PyObject *self, PyObject *const *args, Py_ssi
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *nested;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -310,4 +319,4 @@ InstructionSequenceType_get_instructions(PyObject *self, PyObject *Py_UNUSED(ign
 {
     return InstructionSequenceType_get_instructions_impl((_PyInstructionSequence *)self);
 }
-/*[clinic end generated code: output=c80501a59a1a1103 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=0daca6d9146af046 input=a9049054013a1b77]*/
diff --git a/Python/clinic/marshal.c.h b/Python/clinic/marshal.c.h
index 6c00b2b31b007f..5f6a69532926be 100644
--- a/Python/clinic/marshal.c.h
+++ b/Python/clinic/marshal.c.h
@@ -65,15 +65,18 @@ marshal_dump(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
     PyObject *value;
     PyObject *file;
     int version = Py_MARSHAL_VERSION;
     int allow_code = 1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 3 || !args) {
+        PyObject *argsbuf[4];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 3, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -157,13 +160,16 @@ marshal_load(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *file;
     int allow_code = 1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -236,14 +242,17 @@ marshal_dumps(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     PyObject *value;
     int version = Py_MARSHAL_VERSION;
     int allow_code = 1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[3];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -320,13 +329,16 @@ marshal_loads(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
     Py_buffer bytes = {NULL, NULL};
     int allow_code = 1;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -351,4 +363,4 @@ marshal_loads(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
 
     return return_value;
 }
-/*[clinic end generated code: output=3e4bfc070a3c78ac input=a9049054013a1b77]*/
+/*[clinic end generated code: output=b0da3197e21845ce input=a9049054013a1b77]*/
diff --git a/Python/clinic/sysmodule.c.h b/Python/clinic/sysmodule.c.h
index a47e4d11b54441..e797bc58c4b55f 100644
--- a/Python/clinic/sysmodule.c.h
+++ b/Python/clinic/sysmodule.c.h
@@ -52,11 +52,14 @@ sys_addaudithook(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *hook;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -642,11 +645,14 @@ sys_set_coroutine_origin_tracking_depth(PyObject *module, PyObject *const *args,
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int depth;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -946,11 +952,14 @@ sys_set_int_max_str_digits(PyObject *module, PyObject *const *args, Py_ssize_t n
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     int maxdigits;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1098,13 +1107,16 @@ sys_getunicodeinternedsize(PyObject *module, PyObject *const *args, Py_ssize_t n
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     int _only_immortal = 0;
     Py_ssize_t _return_value;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 0, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 0 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 0, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1597,12 +1609,15 @@ sys_remote_exec(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[2];
     int pid;
     PyObject *script;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 2 > nargs || nargs > 2 || !args) {
+        PyObject *argsbuf[2];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 2, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1660,11 +1675,14 @@ sys__dump_tracelets(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     PyObject *outpath;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 1 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 1, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1724,12 +1742,15 @@ sys__getframemodulename(PyObject *module, PyObject *const *args, Py_ssize_t narg
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
     int depth = 0;
 
-    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
-            /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwnames || 0 > nargs || nargs > 1 || !args) {
+        PyObject *argsbuf[1];
+
+        args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser,
+                /*minpos*/ 0, /*maxpos*/ 1, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
     if (!args) {
         goto exit;
     }
@@ -1948,4 +1969,4 @@ _jit_is_active(PyObject *module, PyObject *Py_UNUSED(ignored))
 #ifndef SYS_GETANDROIDAPILEVEL_METHODDEF
     #define SYS_GETANDROIDAPILEVEL_METHODDEF
 #endif /* !defined(SYS_GETANDROIDAPILEVEL_METHODDEF) */
-/*[clinic end generated code: output=449d16326e69dcf6 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=0e1f765e937d9926 input=a9049054013a1b77]*/
diff --git a/Python/clinic/traceback.c.h b/Python/clinic/traceback.c.h
index deae2efa3eb28d..a11b9ced6ff2f3 100644
--- a/Python/clinic/traceback.c.h
+++ b/Python/clinic/traceback.c.h
@@ -50,7 +50,6 @@ tb_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
-    PyObject *argsbuf[4];
     PyObject * const *fastargs;
     Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     PyObject *tb_next;
@@ -58,8 +57,15 @@ tb_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
     int tb_lasti;
     int tb_lineno;
 
-    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
-            /*minpos*/ 4, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    if (kwargs || 4 > nargs || nargs > 4) {
+        PyObject *argsbuf[4];
+
+        fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
+                /*minpos*/ 4, /*maxpos*/ 4, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
+    }
+    else {
+        fastargs = _PyTuple_CAST(args)->ob_item;
+    }
     if (!fastargs) {
         goto exit;
     }
@@ -132,4 +138,4 @@ traceback_tb_next_set(PyObject *self, PyObject *value, void *Py_UNUSED(context))
 
     return return_value;
 }
-/*[clinic end generated code: output=5361141395da963e input=a9049054013a1b77]*/
+/*[clinic end generated code: output=c6d77dfaebaa86b0 input=a9049054013a1b77]*/
diff --git a/Python/getargs.c b/Python/getargs.c
index c119ca5c35398b..5caae51b665857 100644
--- a/Python/getargs.c
+++ b/Python/getargs.c
@@ -2412,9 +2412,6 @@ vgetargskeywordsfast(PyObject *args, PyObject *keywords,
                                      parser, p_va, flags);
 }
 
-
-#undef _PyArg_UnpackKeywords
-
 PyObject * const *
 _PyArg_UnpackKeywords(PyObject *const *args, Py_ssize_t nargs,
                       PyObject *kwargs, PyObject *kwnames,
diff --git a/Tools/clinic/libclinic/parse_args.py b/Tools/clinic/libclinic/parse_args.py
index 0e15d2f163b816..a13bae8eda4a1a 100644
--- a/Tools/clinic/libclinic/parse_args.py
+++ b/Tools/clinic/libclinic/parse_args.py
@@ -622,7 +622,6 @@ def parse_general(self, clang: CLanguage) -> None:
                 self.flags = "METH_FASTCALL|METH_KEYWORDS"
                 self.parser_prototype = PARSER_PROTOTYPE_FASTCALL_KEYWORDS
                 self.declarations = declare_parser(self.func, codegen=self.codegen)
-                self.declarations += "\nPyObject *argsbuf[%s];" % (len(self.converters) or 1)
                 if self.varpos:
                     self.declarations += "\nPyObject * const *fastargs;"
                     argsname = 'fastargs'
@@ -633,6 +632,27 @@ def parse_general(self, clang: CLanguage) -> None:
                 if has_optional_kw:
                     self.declarations += "\nPy_ssize_t noptargs = %s + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - %d;" % (nargs, self.min_pos + self.min_kw_only)
                 unpack_args = 'args, nargs, NULL, kwnames'
+                if self.min_kw_only or self.varpos:
+                    self.declarations += "\nPyObject *argsbuf[%s];" % (len(self.converters) or 1)
+                    parser_code = [libclinic.normalize_snippet(f"""
+                        {argsname} = _PyArg_UnpackKeywords({unpack_args}, &_parser,
+                                /*minpos*/ {self.min_pos}, /*maxpos*/ {self.max_pos}, /*minkw*/ {self.min_kw_only}, /*varpos*/ {1 if self.varpos else 0}, argsbuf);
+                        if (!{argsname}) {{{{
+                            goto exit;
+                        }}}}
+                        """, indent=4)]
+                else:
+                    parser_code = [libclinic.normalize_snippet(f"""
+                        if (kwnames || {self.min_pos} > nargs || nargs > {self.max_pos} || !args) {{{{
+                            PyObject *argsbuf[{len(self.converters) or 1}];
+
+                            {argsname} = _PyArg_UnpackKeywords({unpack_args}, &_parser,
+                                    /*minpos*/ {self.min_pos}, /*maxpos*/ {self.max_pos}, /*minkw*/ {self.min_kw_only}, /*varpos*/ {1 if self.varpos else 0}, argsbuf);
+                        }}}}
+                        if (!{argsname}) {{{{
+                            goto exit;
+                        }}}}
+                        """, indent=4)]
             else:
                 # positional-or-keyword arguments
                 self.flags = "METH_VARARGS|METH_KEYWORDS"
@@ -640,19 +660,35 @@ def parse_general(self, clang: CLanguage) -> None:
                 argsname = 'fastargs'
                 argname_fmt = 'fastargs[%d]'
                 self.declarations = declare_parser(self.func, codegen=self.codegen)
-                self.declarations += "\nPyObject *argsbuf[%s];" % (len(self.converters) or 1)
                 self.declarations += "\nPyObject * const *fastargs;"
                 self.declarations += "\nPy_ssize_t nargs = PyTuple_GET_SIZE(args);"
                 if has_optional_kw:
                     self.declarations += "\nPy_ssize_t noptargs = %s + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - %d;" % (nargs, self.min_pos + self.min_kw_only)
                 unpack_args = '_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL'
-            parser_code = [libclinic.normalize_snippet(f"""
-                {argsname} = _PyArg_UnpackKeywords({unpack_args}, &_parser,
-                        /*minpos*/ {self.min_pos}, /*maxpos*/ {self.max_pos}, /*minkw*/ {self.min_kw_only}, /*varpos*/ {1 if self.varpos else 0}, argsbuf);
-                if (!{argsname}) {{{{
-                    goto exit;
-                }}}}
-                """, indent=4)]
+                if self.min_kw_only:
+                    self.declarations += "\nPyObject *argsbuf[%s];" % (len(self.converters) or 1)
+                    parser_code = [libclinic.normalize_snippet(f"""
+                        {argsname} = _PyArg_UnpackKeywords({unpack_args}, &_parser,
+                                /*minpos*/ {self.min_pos}, /*maxpos*/ {self.max_pos}, /*minkw*/ {self.min_kw_only}, /*varpos*/ {1 if self.varpos else 0}, argsbuf);
+                        if (!{argsname}) {{{{
+                            goto exit;
+                        }}}}
+                        """, indent=4)]
+                else:
+                    parser_code = [libclinic.normalize_snippet(f"""
+                        if (kwargs || {self.min_pos} > nargs || nargs > {self.max_pos}) {{{{
+                            PyObject *argsbuf[{len(self.converters) or 1}];
+
+                            {argsname} = _PyArg_UnpackKeywords({unpack_args}, &_parser,
+                                    /*minpos*/ {self.min_pos}, /*maxpos*/ {self.max_pos}, /*minkw*/ {self.min_kw_only}, /*varpos*/ {1 if self.varpos else 0}, argsbuf);
+                        }}}}
+                        else {{{{
+                            {argsname} = _PyTuple_CAST(args)->ob_item;
+                        }}}}
+                        if (!{argsname}) {{{{
+                            goto exit;
+                        }}}}
+                        """, indent=4)]
 
         if self.requires_defining_class:
             self.flags = 'METH_METHOD|' + self.flags