diff -r c80f6ecb0bb3 -r 5f9eee6b383b hotspot/src/share/vm/interpreter/interpreterRuntime.cpp
--- a/hotspot/src/share/vm/interpreter/interpreterRuntime.cpp	Tue Mar 15 13:48:21 2016 -0700
+++ b/hotspot/src/share/vm/interpreter/interpreterRuntime.cpp	Thu Mar 17 19:04:01 2016 +0000
@@ -384,7 +384,7 @@
 
   ResourceMark rm(thread);
   char* message = SharedRuntime::generate_class_cast_message(
-    thread, obj->klass()->external_name());
+    thread, obj->klass());
 
   if (ProfileTraps) {
     note_trap(thread, Deoptimization::Reason_class_check, CHECK);