Merged revisions 79060 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

........
  r79060 | collin.winter | 2010-03-18 14:54:01 -0700 (Thu, 18 Mar 2010) | 4 lines

  Add support for weak references to code objects. This will be used by an optimization in the incoming Python 3 JIT.

  Patch by Reid Kleckner!
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diff --git a/Include/code.h b/Include/code.h
index c93d861..f0f88cd 100644
--- a/Include/code.h
+++ b/Include/code.h
@@ -27,6 +27,7 @@
     PyObject *co_lnotab;	/* string (encoding addr<->lineno mapping) See
 				   Objects/lnotab_notes.txt for details. */
     void *co_zombieframe;     /* for optimization only (see frameobject.c) */
+    PyObject *co_weakreflist;   /* to support weakrefs to code objects */
 } PyCodeObject;
 
 /* Masks for co_flags above */