PyObject_ClearWeakRefs() is now a real function instead of a function pointer;

the implementation is in Objects/weakrefobject.c.

Include/object.h

@@ -345,7 +345,7 @@ extern DL_IMPORT(int) PyCallable_Check(PyObject *);
 extern DL_IMPORT(int) PyNumber_Coerce(PyObject **, PyObject **);
 extern DL_IMPORT(int) PyNumber_CoerceEx(PyObject **, PyObject **);
 
-extern DL_IMPORT(void) (*PyObject_ClearWeakRefs)(PyObject *);
+extern DL_IMPORT(void) PyObject_ClearWeakRefs(PyObject *);
 
 /* A slot function whose address we need to compare */
 extern int _PyObject_SlotCompare(PyObject *, PyObject *);

Objects/object.c

@@ -1841,21 +1841,6 @@ PyObject_Free(void *p)
 }
 
 
-/* Hook to clear up weak references only once the _weakref module is
-   imported.  We use a dummy implementation to simplify the code at each
-   call site instead of requiring a test for NULL.
-*/
-
-static void
-empty_clear_weak_refs(PyObject *o)
-{
-    return;
-}
-
-void (*PyObject_ClearWeakRefs)(PyObject *) = empty_clear_weak_refs;
-
-
-
 /* These methods are used to control infinite recursion in repr, str, print,
    etc.  Container objects that may recursively contain themselves,
    e.g. builtin dictionaries and lists, should used Py_ReprEnter() and