--- old/jdk/src/share/classes/java/lang/invoke/MethodType.java	2013-08-30 16:51:40.000000000 +0400
+++ new/jdk/src/share/classes/java/lang/invoke/MethodType.java	2013-08-30 16:51:40.000000000 +0400
@@ -36,6 +36,7 @@
 import java.util.concurrent.ConcurrentHashMap;
 import sun.invoke.util.BytecodeDescriptor;
 import static java.lang.invoke.MethodHandleStatics.*;
+import sun.invoke.Stable;
 import sun.invoke.util.VerifyType;
 
 /**
@@ -94,9 +95,9 @@
     private final Class<?>[] ptypes;
 
     // The remaining fields are caches of various sorts:
-    private MethodTypeForm form; // erased form, plus cached data about primitives
-    private MethodType wrapAlt;  // alternative wrapped/unwrapped version
-    private Invokers invokers;   // cache of handy higher-order adapters
+    private @Stable MethodTypeForm form; // erased form, plus cached data about primitives
+    private @Stable MethodType wrapAlt;  // alternative wrapped/unwrapped version
+    private @Stable Invokers invokers;   // cache of handy higher-order adapters
 
     /**
      * Check the given parameters for validity and store them into the final fields.