From 9fe6b412211ae62af97737f5d7e77131be37199b Mon Sep 17 00:00:00 2001
From: Alex Martelli <aleaxit@gmail.com>
Date: Sun, 6 Feb 2005 07:56:18 +0000
Subject: [PATCH] fix bug 1114776

---
 Lib/copy.py           |  3 ++-
 Lib/test/test_copy.py | 17 +++++++++++++++++
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/Lib/copy.py b/Lib/copy.py
index 95e30f5231cf..7771ef03e8b6 100644
--- a/Lib/copy.py
+++ b/Lib/copy.py
@@ -62,8 +62,9 @@ except ImportError:
 
 __all__ = ["Error", "copy", "deepcopy"]
 
+import inspect
 def _getspecial(cls, name):
-    for basecls in cls.__mro__:
+    for basecls in inspect.getmro(cls):
         try:
             return basecls.__dict__[name]
         except:
diff --git a/Lib/test/test_copy.py b/Lib/test/test_copy.py
index 3484fa77dd5e..8ad5c8511f32 100644
--- a/Lib/test/test_copy.py
+++ b/Lib/test/test_copy.py
@@ -222,6 +222,23 @@ class TestCopy(unittest.TestCase):
         x = C(23)
         self.assertEqual(copy.deepcopy(x), x)
 
+    def _nomro(self):
+        class C(type):
+            def __getattribute__(self, attr):
+                if attr == '__mro__':
+                    raise AttributeError, "What, *me*, a __mro__? Nevah!"
+                return super(C, self).__getattribute__(attr)
+        class D(object):
+            __metaclass__ = C
+        return D()
+
+    def test_copy_mro(self):
+        x = self._nomro()
+        y = copy.copy(x)
+
+    def test_deepcopy_mro(self):
+        x = self._nomro()
+        y = copy.deepcopy(x)
 
     # The deepcopy() method
     def test_deepcopy_basic(self):
-- 
2.47.3