http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50565
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> 2011-09-29 17:03:28 UTC --- Anyreason Why "((int)( ((void *)&(nmsgbuf.payload.part.ball.pos[0])) - ((void *)&(nmsgbuf)) ))" is being used instead of offsetof ?