--- old/src/hotspot/share/gc/g1/g1StringDedup.cpp	2018-03-25 12:59:22.993890134 +0200
+++ new/src/hotspot/share/gc/g1/g1StringDedup.cpp	2018-03-25 12:59:22.806892665 +0200
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2014, 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
@@ -31,6 +31,7 @@
 #include "gc/g1/g1StringDedupStat.hpp"
 #include "gc/g1/g1StringDedupTable.hpp"
 #include "gc/g1/g1StringDedupThread.hpp"
+#include "oops/oop.inline.hpp"
 #include "runtime/atomic.hpp"
 
 bool G1StringDedup::_enabled = false;