--- old/src/cpu/x86/vm/vmreg_x86.inline.hpp	2010-11-10 12:58:51.000000000 +0100
+++ new/src/cpu/x86/vm/vmreg_x86.inline.hpp	2010-11-10 12:58:51.000000000 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006, 2007, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2006, 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 +22,9 @@
  *
  */
 
+#ifndef CPU_X86_VM_VMREG_X86_INLINE_HPP
+#define CPU_X86_VM_VMREG_X86_INLINE_HPP
+
 inline VMReg RegisterImpl::as_VMReg() {
   if( this==noreg ) return VMRegImpl::Bad();
 #ifdef AMD64
@@ -82,3 +85,5 @@
 #endif // AMD64
   return is_even(value());
 }
+
+#endif // CPU_X86_VM_VMREG_X86_INLINE_HPP