--- old/src/hotspot/share/gc/z/zMark.hpp	2018-03-14 08:46:54.060400564 +0100
+++ new/src/hotspot/share/gc/z/zMark.hpp	2018-03-14 08:46:53.886393109 +0100
@@ -34,7 +34,7 @@
 class ZPageTable;
 class ZWorkers;
 
-class ZMark VALUE_OBJ_CLASS_SPEC {
+class ZMark {
   friend class ZMarkRootsTask;
   friend class ZMarkTask;
   friend class ZMarkTryCompleteTask;