bpo-44657: Fix instancemethod_call to use PyInstanceMethod_GET_FUNCTION (GH-27202)

(cherry picked from commit ddf8ae31a0f371eff2db14c7f7a45976b86d56ea)

Co-authored-by: Dong-hee Na <donghee.na@python.org>

diff --git a/Objects/classobject.c b/Objects/classobject.c
index fd9f8757f84ab41d8a8199f66811fb5221158851..af73be3d2624118c4f22acee2883c7b73d211575 100644 (file)
--- a/Objects/classobject.c
+++ b/Objects/classobject.c
@@ -462,7 +462,7 @@ instancemethod_traverse(PyObject *self, visitproc visit, void *arg) {
 static PyObject *
 instancemethod_call(PyObject *self, PyObject *arg, PyObject *kw)
 {
-    return PyObject_Call(PyMethod_GET_FUNCTION(self), arg, kw);
+    return PyObject_Call(PyInstanceMethod_GET_FUNCTION(self), arg, kw);
 }
 
 static PyObject *