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