--- a/hotspot/src/share/vm/opto/parseHelper.cpp	Wed Oct 23 10:00:39 2013 +0200
+++ b/hotspot/src/share/vm/opto/parseHelper.cpp	Wed Oct 23 12:40:23 2013 +0200
@@ -128,7 +128,7 @@
   }
 
   // Push the bool result back on stack
-  Node* res = gen_instanceof(peek(), makecon(TypeKlassPtr::make(klass)));
+  Node* res = gen_instanceof(peek(), makecon(TypeKlassPtr::make(klass)), true);
 
   // Pop from stack AFTER gen_instanceof because it can uncommon trap.
   pop();