Break the cycles after testing cmp() on cyclic objects.
diff --git a/Lib/test/test_b1.py b/Lib/test/test_b1.py
index 639a017..d735bfa 100644
--- a/Lib/test/test_b1.py
+++ b/Lib/test/test_b1.py
@@ -72,6 +72,8 @@
if cmp(b, c) != 0: raise TestFailed, "cmp(%s, %s)" % (b, c)
if cmp(c, a) != 0: raise TestFailed, "cmp(%s, %s)" % (c, a)
if cmp(a, c) != 0: raise TestFailed, "cmp(%s, %s)" % (a, c)
+# okay, now break the cycles
+a.pop(); b.pop(); c.pop()
print 'coerce'
if fcmp(coerce(1, 1.1), (1.0, 1.1)): raise TestFailed, 'coerce(1, 1.1)'