bpo-20291: Fix MSVC warnings in getargs.c (GH-27211)

Fidget-Spinner · isidentical · web-flow · commit f88e138a1aa3 · 2021-07-17T14:09:18.000+03:00
* Fix MSVC warnings in getargs.c

* apply suggestions

Co-Authored-By: Batuhan Taskaya &lt;batuhan@python.org&gt;

Co-authored-by: Batuhan Taskaya &lt;batuhan@python.org&gt;
diff --git a/Python/getargs.c b/Python/getargs.c
@@ -2552,7 +2552,8 @@ _PyArg_UnpackKeywordsWithVararg(PyObject *const *args, Py_ssize_t nargs,
     }
 
     /* copy keyword args using kwtuple to drive process */
-    for (i = Py_MAX((int)nargs, posonly) - varargssize; i < maxargs; i++) {
+    for (i = Py_MAX((int)nargs, posonly) -
+         Py_SAFE_DOWNCAST(varargssize, Py_ssize_t, int); i < maxargs; i++) {
         if (nkwargs) {
             keyword = PyTuple_GET_ITEM(kwtuple, i - posonly);
             if (kwargs != NULL) {

Original file line number	Diff line number	Diff line change
`@@ -2552,7 +2552,8 @@ _PyArg_UnpackKeywordsWithVararg(PyObject const args, Py_ssize_t nargs,`
`2552`	`2552`	`}`
`2553`	`2553`
`2554`	`2554`	`/* copy keyword args using kwtuple to drive process */`
`2555`		`- for (i = Py_MAX((int)nargs, posonly) - varargssize; i < maxargs; i++) {`
	`2555`	`+ for (i = Py_MAX((int)nargs, posonly) -`
	`2556`	`+ Py_SAFE_DOWNCAST(varargssize, Py_ssize_t, int); i < maxargs; i++) {`
`2556`	`2557`	`if (nkwargs) {`
`2557`	`2558`	`keyword = PyTuple_GET_ITEM(kwtuple, i - posonly);`
`2558`	`2559`	`if (kwargs != NULL) {`