--- old/src/share/vm/prims/methodHandleWalk.hpp	2010-01-07 15:24:29.125923807 +0100
+++ new/src/share/vm/prims/methodHandleWalk.hpp	2010-01-07 15:24:29.019459072 +0100
@@ -404,4 +404,10 @@
 
   // Compile the given MH chain into bytecode.
   methodHandle compile(TRAPS);
+
+  // Tests if the given class is a MH adapter holder.
+  static bool klass_is_method_handle_adapter_holder(klassOop klass) {
+    return (klass == SystemDictionary::MethodHandle_klass() ||
+            klass == SystemDictionary::InvokeDynamic_klass());
+  }
 };