--- a/langtools/src/jdk.compiler/share/classes/com/sun/tools/sjavac/server/SysInfo.java	Wed Jul 05 19:56:33 2017 +0200
+++ b/langtools/src/jdk.compiler/share/classes/com/sun/tools/sjavac/server/SysInfo.java	Mon Aug 18 10:59:44 2014 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2014, 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
@@ -34,7 +34,18 @@
  */
 package com.sun.tools.sjavac.server;
 
-public class SysInfo {
+import java.io.Serializable;
+
+/**
+ *  <p><b>This is NOT part of any supported API.
+ *  If you write code that depends on this, you do so at your own risk.
+ *  This code and its internal interfaces are subject to change or
+ *  deletion without notice.</b>
+ */
+public class SysInfo implements Serializable {
+
+    static final long serialVersionUID = -3096346807579L;
+
     public int numCores;
     public long maxMemory;