Commit: 45eed8246a8803efb23693a2b09d020daa5dd22a
Author: Campbell Barton
Date: Wed Nov 27 13:42:24 2013 +1100
http://developer.blender.org/rB45eed8246a8803efb23693a2b09d020daa5dd22a
BMesh Operators: BMO_op_finish now overwrites values in debug mode
This should prevent accidental use-after-free.
===================================================================
M source/blender/bmesh/intern/bmesh_operators.c
===================================================================
diff --git a/source/blender/bmesh/intern/bmesh_operators.c
b/source/blender/bmesh/intern/bmesh_operators.c
index 611ee4d..b443970 100644
--- a/source/blender/bmesh/intern/bmesh_operators.c
+++ b/source/blender/bmesh/intern/bmesh_operators.c
@@ -238,6 +238,9 @@ void BMO_op_finish(BMesh *bm, BMOperator *op)
#ifdef DEBUG
BM_ELEM_INDEX_VALIDATE(bm, "post bmo", bmo_opdefines[op->type]->opname);
+
+ /* avoid accidental re-use */
+ memset(op, 0xff, sizeof(*op));
#else
(void)bm;
#endif
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