Re: ffmpeg 2.8.6-1 test failures on hppa
On 06.02.2016 20:55, Helge Deller wrote:
> Hi Andreas,
>
> On 06.02.2016 14:45, Andreas Cadhalpun wrote:
>> ffmpeg 2.8.6-1 failed to build on hppa due to test failures [1].
>> Previous versions worked fine [2] and since not much changed in ffmpeg, I'm
>> assuming it's actually a regression in gcc-5 5.3.1-7.
>> Note that this version of gcc-5 also regressed on mips [3].
>>
>> Among the many test failures, the following is most interesting:
>> TEST crc
>> /<<PKGBUILDDIR>>/debian/standard/libavutil/crc-test
>> --- /<<PKGBUILDDIR>>/tests/ref/fate/crc 2015-06-19 20:44:54.000000000 <tel:54000000000> +0000
>> +++ tests/data/fate/crc 2016-02-05 08:02:22.455900119 +0000
>> @@ -1,6 +1,6 @@
>> -crc EDB88320 = 3D5CDD04
>> -crc 04C11DB7 = E0BAF5C0
>> -crc 00864CFB = 326039
>> -crc 0000A001 = BFD8
>> -crc 00008005 = BB1F
>> -crc 00000007 = E3
>> +crc EDB88320 = 59A32BFE
>> +crc 04C11DB7 = E8446376
>> +crc 00864CFB = 9AF97C
>> +crc 0000A001 = CFEA
>> +crc 00008005 = 8486
>> +crc 00000007 = A4
>> Test crc failed. Look at tests/data/fate/crc.err for details.
>>
>> So all computed crc values are wrong. It's not surprising that this crc mismatch
>> causes many other tests to fail.
>> It would be great if someone with the necessary hardware could investigate
>> what causes this problem.
>
> For now I've installed the latest gcc version on the buildds and
> did a give-back on ffmpeg. If it fails again, I'll take a closer look.
Yes, there seems to be a gcc bug/problem.
I've manually rebuilt ffmpeg-2.8.5-1 with gcc-5_5.3.1-8 and it fails the same way (but it built earlier with gcc-5_5.3.1-6).
So, gcc-5_5.3.1-7 (and higher) currently have the problem.
Problem is (like you said) somewhere in the md5/crc code:
TEST api-flac
/<<PKGBUILDDIR>>/tests/fate-run.sh fate-api-flac "" "" "/<<PKGBUILDDIR>>/debian/standard" 'run tests/api/api-flac-test' 'null' '/dev/null' '' '1' '' '' '' '' '' '' '' ''
/<<PKGBUILDDIR>>/debian/standard/tests/api/api-flac-test
Test api-flac failed. Look at tests/data/fate/api-flac.err for details.
channel layout: stereo, sample rate: 8000
OK
channel layout: stereo, sample rate: 44100
OK
channel layout: stereo, sample rate: 48000
OK
channel layout: stereo, sample rate: 192000
[flac @ 0x383b0] header crc mismatch
[flac @ 0x383b0] invalid frame header
[flac @ 0x383b0] decode_frame() failed
Error decoding audio packet
/<<PKGBUILDDIR>>/tests/Makefile:203: recipe for target 'fate-api-flac' failed
Helge
>> 1: https://buildd.debian.org/status/fetch.php?pkg=ffmpeg&arch=hppa&ver=7%3A2.8.6-1&stamp=1454663858
>> 2: https://buildd.debian.org/status/fetch.php?pkg=ffmpeg&arch=hppa&ver=7%3A2.8.5-1&stamp=1453062430
>> 3: https://bugs.debian.org/813858
>>
>
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