From ac6a37ae55b0f165dee662d65976c2d3ab9d2325 Mon Sep 17 00:00:00 2001
From: Guido van Rossum <guido@python.org>
Date: Tue, 4 Aug 1998 15:04:06 +0000
Subject: Fix a potential problem in PyLong_FromString(): could fall through
 the for loop with z==NULL but continue to reference z later.

---
 Objects/longobject.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Objects/longobject.c b/Objects/longobject.c
index d638c64..b15a3f0 100644
--- a/Objects/longobject.c
+++ b/Objects/longobject.c
@@ -499,6 +499,8 @@ PyLong_FromString(str, pend, base)
 		Py_DECREF(z);
 		z = temp;
 	}
+	if (z == NULL)
+		return NULL;
 	if (str == start) {
 		PyErr_SetString(PyExc_ValueError,
 				"no digits in long int constant");
-- 
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