--- a/langtools/src/share/classes/com/sun/tools/javac/main/JavaCompiler.java	Tue Jan 20 15:17:45 2009 -0800
+++ b/langtools/src/share/classes/com/sun/tools/javac/main/JavaCompiler.java	Tue Jan 20 18:23:13 2009 -0800
@@ -471,6 +471,7 @@
         private int value;
     };
     protected class CompileStates extends HashMap<Env<AttrContext>,CompileState> {
+        private static final long serialVersionUID = 1812267524140424433L;
         boolean isDone(Env<AttrContext> env, CompileState cs) {
             CompileState ecs = get(env);
             return ecs != null && ecs.isDone(cs);