bpo-43973: object_set_class() checks Py_TPFLAGS_IMMUTABLETYPE (GH-25… · python/cpython@b73b5fb (original) (raw)

Original file line number	Diff line number	Diff line change
@@ -4737,10 +4737,10 @@ object_set_class(PyObject self, PyObject value, void *closure)
4737	4737	*/
4738	4738	if (!(PyType_IsSubtype(newto, &PyModule_Type) &&
4739	4739	PyType_IsSubtype(oldto, &PyModule_Type)) &&
4740		- (!(newto->tp_flags & Py_TPFLAGS_HEAPTYPE) \|
4741		-!(oldto->tp_flags & Py_TPFLAGS_HEAPTYPE))) {
	4740	+ (_PyType_HasFeature(newto, Py_TPFLAGS_IMMUTABLETYPE) \|
	4741	+_PyType_HasFeature(oldto, Py_TPFLAGS_IMMUTABLETYPE))) {
4742	4742	PyErr_Format(PyExc_TypeError,
4743		-"__class__ assignment only supported for heap types "
	4743	+"__class__ assignment only supported for mutable types "
4744	4744	"or ModuleType subclasses");
4745	4745	return -1;
4746	4746	}