From: Guido van Rossum <guido@python.org>
Date: Fri, 14 Sep 2001 19:43:36 +0000 (+0000)
Subject: tp_new_wrapper(): A subtle change in the check for safe use.
X-Git-Tag: v2.2.1c1~1800
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=a8c60f478cfadf9d75d605816f3962fbe588640a;p=python

tp_new_wrapper(): A subtle change in the check for safe use.
Allow staticbase != type, as long as their tp_new slots are the same.
---

diff --git a/Objects/typeobject.c b/Objects/typeobject.c
index 52fd7e9b73..2a9ef71b54 100644
--- a/Objects/typeobject.c
+++ b/Objects/typeobject.c
@@ -2303,7 +2303,7 @@ tp_new_wrapper(PyObject *self, PyObject *args, PyObject *kwds)
 	staticbase = subtype;
 	while (staticbase && (staticbase->tp_flags & Py_TPFLAGS_HEAPTYPE))
 		staticbase = staticbase->tp_base;
-	if (staticbase != type) {
+	if (staticbase->tp_new != type->tp_new) {
 		PyErr_Format(PyExc_TypeError,
 			     "%s.__new__(%s) is not safe, use %s.__new__()",
 			     type->tp_name,