From 8e16351545947fa1d083f8ea02b7b89415f71bc6 Mon Sep 17 00:00:00 2001
From: Benjamin Peterson <benjamin@python.org>
Date: Sun, 24 Aug 2014 18:07:28 -0500
Subject: [PATCH] allow test to work on implementations not using ref-counting
 (closes #22265)

---
 Lib/test/test_itertools.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Lib/test/test_itertools.py b/Lib/test/test_itertools.py
index fea68163b3a..5f33d3975ed 100644
--- a/Lib/test/test_itertools.py
+++ b/Lib/test/test_itertools.py
@@ -1100,6 +1100,7 @@ class TestBasicOps(unittest.TestCase):
         it = islice(it, 1)
         self.assertIsNotNone(wr())
         list(it) # exhaust the iterator
+        support.gc_collect()
         self.assertIsNone(wr())
 
     def test_takewhile(self):