--- old/src/share/vm/gc_implementation/parallelScavenge/gcTaskThread.hpp	2010-11-16 18:12:11.000000000 +0100
+++ new/src/share/vm/gc_implementation/parallelScavenge/gcTaskThread.hpp	2010-11-16 18:12:11.000000000 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2002, 2007, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2002, 2010, 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
@@ -22,6 +22,11 @@
  *
  */
 
+#ifndef SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_GCTASKTHREAD_HPP
+#define SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_GCTASKTHREAD_HPP
+
+#include "runtime/thread.hpp"
+
 // Forward declarations of classes defined here.
 class GCTaskThread;
 class GCTaskTimeStamp;
@@ -97,3 +102,5 @@
   void set_exit_time(jlong time)  { _exit_time = time; }
   void set_name(char* name)       { _name = name; }
 };
+
+#endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_GCTASKTHREAD_HPP