--- old/src/cpu/zero/vm/cppInterpreter_zero.hpp	2010-11-16 18:03:59.000000000 +0100
+++ new/src/cpu/zero/vm/cppInterpreter_zero.hpp	2010-11-16 18:03:59.000000000 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2007, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
  * Copyright 2007, 2008, 2010 Red Hat, Inc.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
@@ -23,6 +23,9 @@
  *
  */
 
+#ifndef CPU_ZERO_VM_CPPINTERPRETER_ZERO_HPP
+#define CPU_ZERO_VM_CPPINTERPRETER_ZERO_HPP
+
  protected:
   // Size of interpreter code
   const static int InterpreterCodeSize = 6 * K;
@@ -41,3 +44,5 @@
  private:
   // Fast result type determination
   static BasicType result_type_of(methodOop method);
+
+#endif // CPU_ZERO_VM_CPPINTERPRETER_ZERO_HPP