diff -r 380fc00765c6 -r ff4fc393de4c hotspot/src/share/vm/utilities/constantTag.hpp
--- a/hotspot/src/share/vm/utilities/constantTag.hpp	Fri Oct 11 13:48:02 2013 +0200
+++ b/hotspot/src/share/vm/utilities/constantTag.hpp	Fri Oct 11 11:23:49 2013 -0400
@@ -108,7 +108,8 @@
     _tag = tag;
   }
 
-  jbyte value()                      { return _tag; }
+  jbyte value() const                { return _tag; }
+  jbyte non_error_value() const;
 
   BasicType basic_type() const;        // if used with ldc, what kind of value gets pushed?