--- old/src/share/classes/sun/reflect/generics/tree/VoidDescriptor.java	2014-11-27 09:55:15.264251183 +0300
+++ new/src/share/classes/sun/reflect/generics/tree/VoidDescriptor.java	2014-11-27 09:55:15.060355747 +0300
@@ -30,7 +30,7 @@
 
 /** AST that represents the pseudo-type void. */
 public class VoidDescriptor implements ReturnType {
-    private static VoidDescriptor singleton = new VoidDescriptor();
+    private static final VoidDescriptor singleton = new VoidDescriptor();
 
     private VoidDescriptor(){}