From a7b0c12152e6268bb09b462f2a0fe52178ee6065 Mon Sep 17 00:00:00 2001
From: Benjamin Peterson <benjamin@python.org>
Date: Mon, 16 Feb 2009 21:23:04 +0000
Subject: PyList_Append() can fail

---
 Modules/itertoolsmodule.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/Modules/itertoolsmodule.c b/Modules/itertoolsmodule.c
index f42232d..fefcbfb 100644
--- a/Modules/itertoolsmodule.c
+++ b/Modules/itertoolsmodule.c
@@ -745,8 +745,10 @@ cycle_next(cycleobject *lz)
 	while (1) {
 		item = PyIter_Next(lz->it);
 		if (item != NULL) {
-			if (!lz->firstpass)
-				PyList_Append(lz->saved, item);
+			if (!lz->firstpass && PyList_Append(lz->saved, item)) {
+				Py_DECREF(item);
+				return NULL;
+			}
 			return item;
 		}
 		if (PyErr_Occurred()) {
-- 
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