--- a/hotspot/src/share/vm/interpreter/interpreterRuntime.cpp	Wed Apr 08 00:12:59 2009 -0700
+++ b/hotspot/src/share/vm/interpreter/interpreterRuntime.cpp	Wed Apr 08 10:56:49 2009 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright 1997-2007 Sun Microsystems, Inc.  All Rights Reserved.
+ * Copyright 1997-2009 Sun Microsystems, Inc.  All Rights Reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -293,6 +293,24 @@
   THROW_MSG(vmSymbols::java_lang_ClassCastException(), message);
 IRT_END
 
+// required can be either a MethodType, or a Class (for a single argument)
+// actual (if not null) can be either a MethodHandle, or an arbitrary value (for a single argument)
+IRT_ENTRY(void, InterpreterRuntime::throw_WrongMethodTypeException(JavaThread* thread,
+                                                                   oopDesc* required,
+                                                                   oopDesc* actual)) {
+  ResourceMark rm(thread);
+  char* message = SharedRuntime::generate_wrong_method_type_message(thread, required, actual);
+
+  if (ProfileTraps) {
+    note_trap(thread, Deoptimization::Reason_constraint, CHECK);
+  }
+
+  // create exception
+  THROW_MSG(vmSymbols::java_dyn_WrongMethodTypeException(), message);
+}
+IRT_END
+
+
 
 // exception_handler_for_exception(...) returns the continuation address,
 // the exception oop (via TLS) and sets the bci/bcp for the continuation.