--- old/src/share/vm/c1/c1_ValueMap.hpp	2012-02-15 17:39:29.482563167 -0500
+++ new/src/share/vm/c1/c1_ValueMap.hpp	2012-02-15 17:39:28.129579769 -0500
@@ -200,6 +200,7 @@
   void do_ProfileCall    (ProfileCall*     x) { /* nothing to do */ }
   void do_ProfileInvoke  (ProfileInvoke*   x) { /* nothing to do */ };
   void do_RuntimeCall    (RuntimeCall*     x) { /* nothing to do */ };
+  void do_MemBar         (MemBar*          x) { /* nothing to do */ };
 };