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

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.

Best regards,
Andreas