diff -r 2338d41fbd81 -r cd5dbf694d45 src/share/vm/oops/cpCacheOop.hpp
--- a/src/share/vm/oops/cpCacheOop.hpp	Fri Apr 30 08:37:24 2010 -0700
+++ b/src/share/vm/oops/cpCacheOop.hpp	Sat May 01 02:42:18 2010 -0700
@@ -181,7 +181,7 @@
 
   void set_dynamic_call(
     Handle call_site,                            // Resolved java.dyn.CallSite (f1)
-    int extra_data                               // (f2)
+    methodHandle signature_invoker               // determines signature information
   );
 
   void set_parameter_size(int value) {