Merged revisions 77161 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/py3k

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  r77161 | benjamin.peterson | 2009-12-30 13:44:54 -0600 (Wed, 30 Dec 2009) | 12 lines

  Merged revisions 77157 via svnmerge from
  svn+ssh://pythondev@svn.python.org/python/trunk

  ........
    r77157 | benjamin.peterson | 2009-12-30 13:34:10 -0600 (Wed, 30 Dec 2009) | 5 lines

    check if the attribute is set before deleting it with T_OBJECT_EX (fixes #7604)

    Also, add a note to the docs about the better behavior of T_OBJECT_EX as
    compared to T_OBJECT.
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diff --git a/Lib/test/test_descr.py b/Lib/test/test_descr.py
index 17d96b2..a02fe39 100644
--- a/Lib/test/test_descr.py
+++ b/Lib/test/test_descr.py
@@ -1044,6 +1044,11 @@
             del h
         self.assertEqual(s.getvalue(), '')
 
+        class X(object):
+            __slots__ = "a"
+        with self.assertRaises(AttributeError):
+            del X().a
+
     def test_slots_special(self):
         # Testing __dict__ and __weakref__ in __slots__...
         class D(object):