diff -up Python-2.7.3/Lib/ctypes/__init__.py.rhbz814391 Python-2.7.3/Lib/ctypes/__init__.py
--- Python-2.7.3/Lib/ctypes/__init__.py.rhbz814391	2012-04-20 14:51:19.390990244 -0400
+++ Python-2.7.3/Lib/ctypes/__init__.py	2012-04-20 14:51:45.141668316 -0400
@@ -272,11 +272,6 @@ def _reset_cache():
     # _SimpleCData.c_char_p_from_param
     POINTER(c_char).from_param = c_char_p.from_param
     _pointer_type_cache[None] = c_void_p
-    # XXX for whatever reasons, creating the first instance of a callback
-    # function is needed for the unittests on Win64 to succeed.  This MAY
-    # be a compiler bug, since the problem occurs only when _ctypes is
-    # compiled with the MS SDK compiler.  Or an uninitialized variable?
-    CFUNCTYPE(c_int)(lambda: None)
 
 try:
     from _ctypes import set_conversion_mode