--- old/src/share/vm/gc_implementation/parallelScavenge/psVirtualspace.hpp	2010-11-16 18:12:48.000000000 +0100
+++ new/src/share/vm/gc_implementation/parallelScavenge/psVirtualspace.hpp	2010-11-16 18:12:48.000000000 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2009, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 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_PSVIRTUALSPACE_HPP
+#define SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSVIRTUALSPACE_HPP
+
+#include "runtime/virtualspace.hpp"
+
 // VirtualSpace for the parallel scavenge collector.
 //
 // VirtualSpace is data structure for committing a previously reserved address
@@ -173,3 +178,5 @@
   _committed_low_addr = low_addr;
   _committed_high_addr = high_addr;
 }
+
+#endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSVIRTUALSPACE_HPP