--- a/hotspot/src/share/vm/memory/metachunk.hpp	Tue Nov 27 14:11:37 2012 -0800
+++ b/hotspot/src/share/vm/memory/metachunk.hpp	Thu Nov 29 16:50:29 2012 -0500
@@ -123,9 +123,7 @@
 
   void assert_is_mangled() const {/* Don't check "\*/}
 
-#ifdef ASSERT
-  void mangle();
-#endif // ASSERT
+  NOT_PRODUCT(void mangle();)
 
   void print_on(outputStream* st) const;
   void verify();