Index: Lib/test/test_os.py
===================================================================
--- Lib/test/test_os.py	(revision 66306)
+++ Lib/test/test_os.py	(working copy)
@@ -530,6 +530,14 @@
     class Win32ErrorTests(unittest.TestCase):
         pass
 
+class LeakTests(unittest.TestCase):
+    def test_rename(self):
+        path = unicode(test_support.TESTFN)
+        old = sys.getrefcount(path)
+        self.assertRaises(TypeError, os.rename, path, 0)
+        new = sys.getrefcount(path)
+        self.assertEqual(old, new)
+
 def test_main():
     test_support.run_unittest(
         FileTests,
@@ -540,7 +548,8 @@
         MakedirTests,
         DevNullTests,
         URandomTests,
-        Win32ErrorTests
+        Win32ErrorTests,
+        LeakTests
     )
 
 if __name__ == "__main__":