GCC i386 stack misalignment: [package - head-i386-default][graphics/rawtherapee-devel] Failed for rawtherapee-devel-5.0 in stage

[Dimitry Andric]

On 29 Jan 2017, at 19:35, Matthias Andree <mandree at 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

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