diff -r 0fcb02b58b20 Lib/test/test_threading.py
--- a/Lib/test/test_threading.py	Thu Jan 26 02:24:36 2012 +1100
+++ b/Lib/test/test_threading.py	Sat Jan 28 19:39:21 2012 +1100
@@ -738,6 +738,7 @@
 class PyRLockTests(lock_tests.RLockTests):
     locktype = staticmethod(threading._PyRLock)
 
+@unittest.skipIf(threading._CRLock is None, 'RLock not implemented in C')
 class CRLockTests(lock_tests.RLockTests):
     locktype = staticmethod(threading._CRLock)