Bug#882075: ffmpeg: sometimes FTBFS on i386

[James Cowgill]

Source: ffmpeg
Version: 7:3.4-1
Severity: serious
Tags: sid buster

And just after I upload 3.4-3...

ffmpeg 3.4 sometimes FTBFS on i386, possibly due to some hardware
specific thing. It has worked on the buildds so far, but sometimes fails
on the ubuntu builders and in reproducible builds with checkasm errors
(although often rebuilding helps):

> Test checkasm-float_dsp failed. Look at tests/data/fate/checkasm-float_dsp.err for details.
> checkasm: using random seed 2642491962
> SSE:
>  - float_dsp.vector_fmul         [OK]
>  - float_dsp.vector_fmac         [OK]
>  - float_dsp.butterflies_float   [OK]
>  - float_dsp.scalarproduct_float [OK]
> 93: -53.395181798898 - -53.395181798898 = -7.1054273576e-15
> SSE2:
>    vector_dmul_scalar_sse2 (float_dsp.c:171)
>  - float_dsp.vector_dmul         [FAILED]
>  - float_dsp.vector_dmac         [OK]
> AVX:
>  - float_dsp.vector_fmul         [OK]
>  - float_dsp.vector_fmac         [OK]
>  - float_dsp.vector_dmul         [OK]
>  - float_dsp.vector_dmac         [OK]
> FMA3:
>  - float_dsp.vector_fmul         [OK]
>  - float_dsp.vector_fmac         [OK]
>  - float_dsp.vector_dmac         [OK]
> AVX2:
>  - float_dsp.vector_fmul         [OK]
> checkasm: 1 of 20 tests have failed
> /build/1st/ffmpeg-3.4/tests/Makefile:225: recipe for target 'fate-checkasm-float_dsp' failed

James

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