http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47936
--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-03-01 10:30:12 UTC --- IMHO WONTFIX. Eventually we could add a -fvery-strict-aliasing, but it's probably not worth it. Leaving open to eventually document this fact somewhere.