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Re: Bug#800318: gcc-5: [mips,mipsel] regression: miscompilation caused by -fexpensive-optimizations

On 2015-09-29 23:33, Andreas Cadhalpun wrote:
> On 29.09.2015 22:54, Aurelien Jarno wrote:
> > On 2015-09-29 19:41, Andreas Cadhalpun wrote:
> >> Great. Can you estimate when that upload will happen?
> >> (I'm trying to decide whether or not to workaround it in the meantime.)
> > 
> > This is handled by Matthias Klose, so it's a bit difficult to say, but I
> > guess before the end of the week. Note that version 5.2.1-18 might
> > appear as it has been uploaded today, but it was stuck in NEW for a few
> > days.
> OK.
> >>> I'll also try to better understand the issue so that I can report the
> >>> bug upstream.
> > 
> > On this aspect, I believe the problem might be PR66424 [1], at least the
> > fix for this bug fixes the testcase you provided. I am currently cleanly
> > building gcc with it and tomorrow morning I'll build ffmpeg with this
> > gcc to fully confirm. In the meantime Matthias asked upstream to
> > backport it to the stable gcc 5 branch, which has already been done a
> > few hours ago.
> Cool. If it fixes the testcase I'm quite confident that it fixes
> ffmpeg's test failures as well.

I confirm it fixes the issues seen on ffmpeg, and I guess it might fix
some other issues as well like the protobuf FTBFS. Everything has been
committed in the SVN, so it will be in the next upload.


Aurelien Jarno                          GPG: 4096R/1DDD8C9B
aurelien@aurel32.net                 http://www.aurel32.net

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