--- old/src/share/vm/runtime/unhandledOops.hpp	2010-10-28 14:02:28.000000000 +0200
+++ new/src/share/vm/runtime/unhandledOops.hpp	2010-10-28 14:02:28.000000000 +0200
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 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
@@ -21,6 +21,9 @@
  * questions.
  *
  */
+
+#ifndef SHARE_VM_RUNTIME_UNHANDLEDOOPS_HPP
+#define SHARE_VM_RUNTIME_UNHANDLEDOOPS_HPP
 #ifdef CHECK_UNHANDLED_OOPS
 
 // Detect unhanded oops in VM code
@@ -81,3 +84,5 @@
 const intptr_t BAD_OOP_ADDR =  0xfffffff1;
 #endif // _LP64
 #endif // CHECK_UNHANDLED_OOPS
+
+#endif // SHARE_VM_RUNTIME_UNHANDLEDOOPS_HPP