https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89357
--- Comment #8 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-9 branch has been updated by Jason Merrill <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:9d9679132e0e9b0108e78bf1bc8fdea6238649a3 commit r9-8190-g9d9679132e0e9b0108e78bf1bc8fdea6238649a3 Author: Jason Merrill <ja...@redhat.com> Date: Wed Jan 29 17:16:12 2020 -0500 c++: Drop alignas restriction for stack variables. Since expand_stack_vars and such know how to deal with variables aligned beyond MAX_SUPPORTED_STACK_ALIGNMENT, we shouldn't reject alignas of large alignments. And if we don't do that, there's no point in having check_cxx_fundamental_alignment_constraints at all, since check_user_alignment already enforces MAX_OFILE_ALIGNMENT. PR c++/89357 * c-attribs.c (check_cxx_fundamental_alignment_constraints): Remove.