--- old/src/os/solaris/vm/os_solaris.hpp	2010-11-10 13:00:43.000000000 +0100
+++ new/src/os/solaris/vm/os_solaris.hpp	2010-11-10 13:00:42.000000000 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2009, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 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 OS_SOLARIS_VM_OS_SOLARIS_HPP
+#define OS_SOLARIS_VM_OS_SOLARIS_HPP
+
 // Solaris_OS defines the interface to Solaris operating systems
 
 class Solaris {
@@ -394,3 +397,5 @@
       assert_status(status == 0, status, "mutex_init");
     }
 } ;
+
+#endif // OS_SOLARIS_VM_OS_SOLARIS_HPP