From: Guido van Rossum <guido@python.org>
Date: Fri, 4 Aug 1995 04:05:10 +0000 (+0000)
Subject: better err checks in resizetuple
X-Git-Tag: v1.3b1~133
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=055968c06844498fc4e8e6bdefe737828b8525ca;p=thirdparty%2FPython%2Fcpython.git

better err checks in resizetuple
---

diff --git a/Objects/tupleobject.c b/Objects/tupleobject.c
index 7fae2647b0dc..2218e503200e 100644
--- a/Objects/tupleobject.c
+++ b/Objects/tupleobject.c
@@ -408,13 +408,13 @@ resizetuple(pv, newsize, last_is_sticky)
 	int sizediff;
 
 	v = (tupleobject *) *pv;
-	sizediff = newsize - v->ob_size;
-	if (!is_tupleobject(v) || v->ob_refcnt != 1) {
+	if (v == NULL || !is_tupleobject(v) || v->ob_refcnt != 1) {
 		*pv = 0;
 		DECREF(v);
 		err_badcall();
 		return -1;
 	}
+	sizediff = newsize - v->ob_size;
 	if (sizediff == 0)
 		return 0;
 	/* XXX UNREF/NEWREF interface should be more symmetrical */