--- a/src/hotspot/share/gc/parallel/cardTableExtension.cpp	Mon Feb 12 16:08:33 2018 -0800
+++ b/src/hotspot/share/gc/parallel/cardTableExtension.cpp	Wed Jan 10 22:48:27 2018 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 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
@@ -26,7 +26,7 @@
 #include "gc/parallel/cardTableExtension.hpp"
 #include "gc/parallel/gcTaskManager.hpp"
 #include "gc/parallel/objectStartArray.inline.hpp"
-#include "gc/parallel/parallelScavengeHeap.hpp"
+#include "gc/parallel/parallelScavengeHeap.inline.hpp"
 #include "gc/parallel/psPromotionManager.inline.hpp"
 #include "gc/parallel/psScavenge.hpp"
 #include "gc/parallel/psTasks.hpp"
@@ -677,3 +677,7 @@
   }
   return min_start;
 }
+
+bool CardTableExtension::is_in_young(oop obj) const {
+  return ParallelScavengeHeap::heap()->is_in_young(obj);
+}