--- /dev/null
+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