--- old/src/hotspot/share/oops/oop.cpp	2018-03-25 12:59:32.700758774 +0200
+++ new/src/hotspot/share/oops/oop.cpp	2018-03-25 12:59:32.484761696 +0200
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -133,7 +133,7 @@
   if (ignore_mark_word) {
     return true;
   }
-  if (obj->mark() != NULL) {
+  if (obj->mark_raw() != NULL) {
     return true;
   }
   return !SafepointSynchronize::is_at_safepoint();