http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49343
--- Comment #3 from Martin Jambor <jamborm at gcc dot gnu.org> 2011-06-10 11:23:32 UTC --- Apparently build_ref_for_model has to calculate offsets of COMPONENT_REFs with component_ref_field_offset just like get_ref_base_and_extent does in order to be able to make sense of "placeholders" ...whatever they are. I'll prepare a patch soon.