diff -r e92b3d8118f1 -r 6b2aecc4f7d8 hotspot/src/share/vm/utilities/constantTag.hpp
--- a/hotspot/src/share/vm/utilities/constantTag.hpp	Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/utilities/constantTag.hpp	Wed Jun 09 18:50:45 2010 -0700
@@ -78,13 +78,24 @@
   bool is_field_or_method() const   { return is_field() || is_method() || is_interface_method(); }
   bool is_symbol() const            { return is_utf8(); }
 
+  bool is_method_type() const              { return _tag == JVM_CONSTANT_MethodType; }
+  bool is_method_handle() const            { return _tag == JVM_CONSTANT_MethodHandle; }
+
+  constantTag() {
+    _tag = JVM_CONSTANT_Invalid;
+  }
   constantTag(jbyte tag) {
     assert((tag >= 0 && tag <= JVM_CONSTANT_NameAndType) ||
+           (tag >= JVM_CONSTANT_MethodHandle && tag <= JVM_CONSTANT_MethodType) ||
            (tag >= JVM_CONSTANT_InternalMin && tag <= JVM_CONSTANT_InternalMax), "Invalid constant tag");
     _tag = tag;
   }
 
   jbyte value()                      { return _tag; }
 
+  BasicType basic_type() const;        // if used with ldc, what kind of value gets pushed?
+
+  const char* internal_name() const;  // for error reporting
+
   void print_on(outputStream* st) const PRODUCT_RETURN;
 };