bpo-41845: Move PyObject_GenericGetDict() back into the limited API (GH22646)

It was moved out of the limited API in 7d95e40.
This change re-enables it from 3.10, to avoid generating invalid extension modules for earlier versions.

Author: ZackerySpytz

Include/cpython/dictobject.h

@@ -41,7 +41,6 @@ PyAPI_FUNC(int) _PyDict_DelItem_KnownHash(PyObject *mp, PyObject *key,
 PyAPI_FUNC(int) _PyDict_DelItemIf(PyObject *mp, PyObject *key,
                                   int (*predicate)(PyObject *value));
 PyDictKeysObject *_PyDict_NewKeysForClass(void);
-PyAPI_FUNC(PyObject *) PyObject_GenericGetDict(PyObject *, void *);
 PyAPI_FUNC(int) _PyDict_Next(
     PyObject *mp, Py_ssize_t *pos, PyObject **key, PyObject **value, Py_hash_t *hash);
 

Include/dictobject.h

@@ -57,6 +57,9 @@ PyAPI_FUNC(int) PyDict_MergeFromSeq2(PyObject *d,
 PyAPI_FUNC(PyObject *) PyDict_GetItemString(PyObject *dp, const char *key);
 PyAPI_FUNC(int) PyDict_SetItemString(PyObject *dp, const char *key, PyObject *item);
 PyAPI_FUNC(int) PyDict_DelItemString(PyObject *dp, const char *key);
+#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x030A0000
+PyAPI_FUNC(PyObject *) PyObject_GenericGetDict(PyObject *, void *);
+#endif
 
 /* Dictionary (keys, values, items) views */
 

Misc/NEWS.d/next/C API/2020-10-11-05-05-53.bpo-41845.ZFvuQM.rst

@@ -0,0 +1,2 @@
+:c:func:`PyObject_GenericGetDict` is available again in the limited API
+when targeting 3.10 or later.

PC/python3dll.c

@@ -414,6 +414,7 @@ EXPORT_FUNC(PyObject_GC_Track)
 EXPORT_FUNC(PyObject_GC_UnTrack)
 EXPORT_FUNC(PyObject_GenericGetAttr)
 EXPORT_FUNC(PyObject_GenericSetAttr)
+EXPORT_FUNC(PyObject_GenericGetDict)
 EXPORT_FUNC(PyObject_GenericSetDict)
 EXPORT_FUNC(PyObject_GetAttr)
 EXPORT_FUNC(PyObject_GetAttrString)