diff -r 7d079e0eedef -r ab48109f7d1b hotspot/src/share/vm/compiler/disassembler.cpp
--- a/hotspot/src/share/vm/compiler/disassembler.cpp	Fri Nov 09 22:22:53 2012 -0800
+++ b/hotspot/src/share/vm/compiler/disassembler.cpp	Mon Nov 12 16:15:05 2012 -0500
@@ -353,7 +353,7 @@
       obj->print_value_on(st);
       if (st->count() == c) {
         // No output.  (Can happen in product builds.)
-        st->print("(a %s)", Klass::cast(obj->klass())->external_name());
+        st->print("(a %s)", obj->klass()->external_name());
       }
       return;
     }