http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48229
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-03-28 09:22:57 UTC --- .debug_types only appears with -gdwarf-4, I don't think any gcc defaulted to that yet, so if you are talking about DW_AT_accessibility default, IMHO just assume the DWARF3+ semantics in .debug_types.
