Date: Sun, 29 Jan 2017 20:06:13 +0100 From: Dimitry Andric <dim@FreeBSD.org> To: Matthias Andree <mandree@FreeBSD.org> Cc: FreeBSD Toolchain <freebsd-toolchain@freebsd.org>, Gerald Pfeifer <gerald@FreeBSD.org> Subject: Re: GCC i386 stack misalignment: [package - head-i386-default][graphics/rawtherapee-devel] Failed for rawtherapee-devel-5.0 in stage Message-ID: <2663804A-70D1-4804-B5B4-4F0A964FF929@FreeBSD.org> In-Reply-To: <c519fb4d-2154-4dcf-b40e-2796cfe27c0e@FreeBSD.org> References: <201701291703.v0TH3gqR042774@beefy11.nyi.freebsd.org> <c519fb4d-2154-4dcf-b40e-2796cfe27c0e@FreeBSD.org>
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[-- Attachment #1 --] On 29 Jan 2017, at 19:35, Matthias Andree <mandree@FreeBSD.org> wrote: > whenever I've traced one of the attached SIGBUS issues on gcc-compiled > i386 code with SSE2, I found that it was using unaligned 128-bit = > 16-byte wide SSE2 access which also needs 16-byte aligned data > (including stacks). See these very old bugs: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=40838 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=38496 PR 40838 is 8 years old and still has status NEW, PR38496 has WONTFIX. E.g. don't count on this getting fixed upstream. -Dimitry [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.30 iEYEARECAAYFAliOPS0ACgkQsF6jCi4glqNh9QCglVH213RlnPI4pcbmflgJe0Rc ZHgAn3uWIqRrJUJy9mUBQDPGxPYz9JV+ =M1uN -----END PGP SIGNATURE-----
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