--- old/src/hotspot/share/oops/klassVtable.hpp	2019-03-11 14:26:21.398354944 +0100
+++ new/src/hotspot/share/oops/klassVtable.hpp	2019-03-11 14:26:21.186354947 +0100
@@ -310,7 +310,10 @@
   itableMethodEntry* method_entry(int i) { assert(0 <= i && i <= _size_method_table, "index out of bounds");
                                            return &((itableMethodEntry*)method_start())[i]; }
 
-  int size_offset_table()                { return _size_offset_table; }
+  InstanceKlass* klass() const          { return _klass; }
+  int table_offset() const              { return _table_offset; }
+  int size_offset_table() const         { return _size_offset_table; }
+  int size_method_table() const         { return _size_method_table; }
 
   // Initialization
   void initialize_itable(bool checkconstraints, TRAPS);