--- old/src/hotspot/share/gc/z/zMessagePort.hpp	2018-03-14 08:46:55.448460028 +0100
+++ new/src/hotspot/share/gc/z/zMessagePort.hpp	2018-03-14 08:46:55.290453259 +0100
@@ -32,7 +32,7 @@
 template <typename T> class ZMessageRequest;
 
 template <typename T>
-class ZMessagePort VALUE_OBJ_CLASS_SPEC {
+class ZMessagePort {
 private:
   typedef ZMessageRequest<T> Request;
 
@@ -52,7 +52,7 @@
   void ack();
 };
 
-class ZRendezvousPort VALUE_OBJ_CLASS_SPEC {
+class ZRendezvousPort {
 private:
   ZMessagePort<bool> _port;