http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51994
--- Comment #27 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-02-01 15:41:15 UTC --- (In reply to comment #25) > I've changed my mind: given that we shouldn't have references outside the base > object in valid programs, there must be an offset if the bitpos is negative, > so > we can simply add the (rounded) latter to the former. That's what the callers > would have to do anyway, so we'd better factor it in get_inner_reference. I'm not sure it's the best thing to do (adjusting 'offset' by a BITS_PER_UNIT multiple instead of whatever the caller would like the most). Only the callers would know how they want to adjust for negative bitpos.
