http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52614
--- Comment #12 from William J. Schmidt <wschmidt at gcc dot gnu.org> 2012-04-05 12:46:12 UTC --- Forget that last comment. As Richard pointed out on gcc-patches: "That's probably more a C language question - you would get valid C rejected with -fno-common. But maybe -ftree-vectorize should suggest -fno-common when it encounters a case it would like to promote alignment for. Not sure if for example Fortran would ever work with -fno-common though."
