http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57586
--- Comment #1 from jgreenhalgh at gcc dot gnu.org --- A bisect shows that this bug first occurs after r197095: 2013-03-26 Richard Biener <rguent...@suse.de> * emit-rtl.c (set_mem_attributes_minus_bitpos): Remove alignment computations and rely on get_object_alignment_1 for the !TYPE_P case. Commonize DECL/COMPONENT_REF handling in the ARRAY_REF path.