Given a class without __cmp__ or __eq__, cmp() of two instances of

that class should compare the id() of those instances.  Add a test
that verifies this.  This test currently fails; I believe this is
caused by object.c:2.132 (Patch #424475 by loewis).

Lib/test/test_compare.py

@@ -44,5 +44,13 @@ def test():
                     print "%s == %s" % (a, b)
                 else:
                     print "%s != %s" % (a, b)
+    # Ensure default comparison compares id() of args
+    L = [None]
+    for i in range(10):
+        L.insert(len(L)/2, Empty())
+    for a in L:
+        for b in L:
+            if cmp(a, b) != cmp(id(a), id(b)):
+                print "ERROR:", cmp(a, b), cmp(id(a), id(b)), id(a), id(b)
 
 test()