--- old/src/cpu/zero/vm/copy_zero.hpp	2010-10-28 13:48:26.000000000 +0200
+++ new/src/cpu/zero/vm/copy_zero.hpp	2010-10-28 13:48:26.000000000 +0200
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2004, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
  * Copyright 2007 Red Hat, Inc.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
@@ -23,6 +23,9 @@
  *
  */
 
+#ifndef CPU_ZERO_VM_COPY_ZERO_HPP
+#define CPU_ZERO_VM_COPY_ZERO_HPP
+
 // Inline functions for memory copy and fill.
 
 static void pd_conjoint_words(HeapWord* from, HeapWord* to, size_t count) {
@@ -176,3 +179,5 @@
 static void pd_zero_to_bytes(void* to, size_t count) {
   memset(to, 0, count);
 }
+
+#endif // CPU_ZERO_VM_COPY_ZERO_HPP