--- old/src/share/vm/oops/instanceKlass.hpp	2017-09-19 17:12:49.253909352 -0400
+++ new/src/share/vm/oops/instanceKlass.hpp	2017-09-19 17:12:49.145908816 -0400
@@ -470,6 +470,7 @@
   int     field_access_flags(int index) const { return field(index)->access_flags(); }
   Symbol* field_name        (int index) const { return field(index)->name(constants()); }
   Symbol* field_signature   (int index) const { return field(index)->signature(constants()); }
+  bool    is_field_flatten  (int index) const { return field(index)->is_flatten(); }
 
   // Number of Java declared fields
   int java_fields_count() const           { return (int)_java_fields_count; }