--- a/hotspot/src/share/vm/services/classLoadingService.cpp	Mon Oct 26 13:11:36 2015 -0400
+++ b/hotspot/src/share/vm/services/classLoadingService.cpp	Wed Oct 28 09:47:23 2015 -0400
@@ -164,7 +164,7 @@
 
   class_size += k->size();
 
-  if (k->oop_is_instance()) {
+  if (k->is_instance_klass()) {
     class_size += k->methods()->size();
     // FIXME: Need to count the contents of methods
     class_size += k->constants()->size();