Fix 'w' type check

da-woods · da-woods · commit f8b63a5dea8e · 2026-06-28T14:27:51.000+01:00
diff --git a/Objects/descrobject.c b/Objects/descrobject.c
@@ -1234,7 +1234,7 @@ mappingproxy_richcompare(PyObject *self, PyObject *w, int op)
 {
     if (op == Py_EQ || op == Py_NE) {
         mappingproxyobject *v = (mappingproxyobject *)self;
-        if (Py_TYPE(w) == Py_TYPE(self)) {
+        if (PyObject_TypeCheck(w, &PyDictProxy_Type)) {
             w = ((mappingproxyobject *)w)->mapping;
         }
 

Original file line number	Diff line number	Diff line change
`@@ -1234,7 +1234,7 @@ mappingproxy_richcompare(PyObject self, PyObject w, int op)`
`1234`	`1234`	`{`
`1235`	`1235`	`if (op == Py_EQ \|\| op == Py_NE) {`
`1236`	`1236`	`mappingproxyobject v = (mappingproxyobject )self;`
`1237`		`- if (Py_TYPE(w) == Py_TYPE(self)) {`
	`1237`	`+ if (PyObject_TypeCheck(w, &PyDictProxy_Type)) {`
`1238`	`1238`	`w = ((mappingproxyobject *)w)->mapping;`
`1239`	`1239`	`}`
`1240`	`1240`