diff -r c78acf6c2f3e -r fcf89720ae71 src/share/classes/com/sun/tools/javac/code/Flags.java
--- a/src/share/classes/com/sun/tools/javac/code/Flags.java	Mon Dec 10 12:10:50 2012 +0000
+++ b/src/share/classes/com/sun/tools/javac/code/Flags.java	Mon Dec 10 16:21:26 2012 +0000
@@ -307,7 +307,7 @@
     }
 
     // Cache of modifier sets.
-    private static Map<Long, Set<Modifier>> modifierSets =
+    private static final Map<Long, Set<Modifier>> modifierSets =
         new java.util.concurrent.ConcurrentHashMap<Long, Set<Modifier>>(64);
 
     public static boolean isStatic(Symbol symbol) {
@@ -356,7 +356,7 @@
         VARARGS("varargs"),
         PACKAGE("package");
 
-        String name;
+        private final String name;
 
         Flag(String name) {
             this.name = name;