export the symbol

Author: Fidget-Spinner

Include/internal/pycore_object.h

@@ -918,7 +918,7 @@ extern PyObject *_PyType_LookupRefAndVersion(PyTypeObject *, PyObject *,
 extern unsigned int
 _PyType_LookupStackRefAndVersion(PyTypeObject *type, PyObject *name, _PyStackRef *out);
 
-extern int _PyObject_GetMethodStackRef(PyThreadState *ts, PyObject *obj,
+PyAPI_FUNC(int) _PyObject_GetMethodStackRef(PyThreadState *ts, PyObject *obj,
                                        PyObject *name, _PyStackRef *method);
 
 // Cache the provided init method in the specialization cache of type if the