gh-91348: Restore frame argument to sys._getframe audit event (GH-94928)

Author: zooba

Doc/library/sys.rst

@@ -774,7 +774,7 @@ always available.
    that is deeper than the call stack, :exc:`ValueError` is raised.  The default
    for *depth* is zero, returning the frame at the top of the call stack.
 
-   .. audit-event:: sys._getframe "" sys._getframe
+   .. audit-event:: sys._getframe frame sys._getframe
 
    .. impl-detail::
 

Lib/test/audit-tests.py

@@ -408,6 +408,17 @@ def hook(event, *args):
             raise RuntimeError("Expected sqlite3.load_extension to fail")
 
 
+def test_sys_getframe():
+    import sys
+
+    def hook(event, args):
+        if event.startswith("sys."):
+            print(event, args[0].f_code.co_name)
+
+    sys.addaudithook(hook)
+    sys._getframe()
+
+
 if __name__ == "__main__":
     from test.support import suppress_msvcrt_asserts
 

Lib/test/test_audit.py

@@ -176,5 +176,17 @@ def test_sqlite3(self):
         self.assertEqual(actual, expected)
 
 
+    def test_sys_getframe(self):
+        returncode, events, stderr = self.run_python("test_sys_getframe")
+        if returncode:
+            self.fail(stderr)
+
+        if support.verbose:
+            print(*events, sep='\n')
+        actual = [(ev[0], ev[2]) for ev in events]
+        expected = [("sys._getframe", "test_sys_getframe")]
+
+        self.assertEqual(actual, expected)
+
 if __name__ == "__main__":
     unittest.main()

Python/sysmodule.c

@@ -1772,10 +1772,6 @@ sys__getframe_impl(PyObject *module, int depth)
     PyThreadState *tstate = _PyThreadState_GET();
     _PyInterpreterFrame *frame = tstate->cframe->current_frame;
 
-    if (_PySys_Audit(tstate, "sys._getframe", NULL) < 0) {
-        return NULL;
-    }
-
     if (frame != NULL) {
         while (depth > 0) {
             frame = frame->previous;
@@ -1793,7 +1789,13 @@ sys__getframe_impl(PyObject *module, int depth)
                          "call stack is not deep enough");
         return NULL;
     }
-    return _Py_XNewRef((PyObject *)_PyFrame_GetFrameObject(frame));
+
+    PyObject *pyFrame = Py_XNewRef((PyObject *)_PyFrame_GetFrameObject(frame));
+    if (pyFrame && _PySys_Audit(tstate, "sys._getframe", "(O)", pyFrame) < 0) {
+        Py_DECREF(pyFrame);
+        return NULL;
+    }
+    return pyFrame;
 }
 
 /*[clinic input]