1 files changed, 6 insertions, 5 deletions
diff --git a/Include/internal/pycore_object.h b/Include/internal/pycore_object.h
index 0348563..be308cd 100644
--- a/Include/internal/pycore_object.h
+++ b/Include/internal/pycore_object.h
@@ -220,11 +220,12 @@ static inline PyObject **_PyObject_ManagedDictPointer(PyObject *obj)
     return ((PyObject **)obj)-3;
 }
 
-PyObject ** _PyObject_DictPointer(PyObject *);
-int _PyObject_VisitInstanceAttributes(PyObject *self, visitproc visit, void *arg);
-void _PyObject_ClearInstanceAttributes(PyObject *self);
-void _PyObject_FreeInstanceAttributes(PyObject *self);
-int _PyObject_IsInstanceDictEmpty(PyObject *);
+extern PyObject ** _PyObject_DictPointer(PyObject *);
+extern int _PyObject_VisitInstanceAttributes(PyObject *self, visitproc visit, void *arg);
+extern void _PyObject_ClearInstanceAttributes(PyObject *self);
+extern void _PyObject_FreeInstanceAttributes(PyObject *self);
+extern int _PyObject_IsInstanceDictEmpty(PyObject *);
+extern PyObject* _PyType_GetSubclasses(PyTypeObject *);
 
 #ifdef __cplusplus
 }