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Re: [PATCH 1/1] Makefile: add prove and coverage-prove targets

On 1/29/2019 1:10 PM, Derrick Stolee wrote:
> On 1/29/2019 12:34 PM, SZEDER Gábor wrote:
>> On Tue, Jan 29, 2019 at 04:58:27PM +0100, SZEDER Gábor wrote:
>> And in the related email discussion [1]:
>>   But even though the docs claim it [-j<N>] should be possible,
>>   I've been getting "random" test failures when compiled with coverage
>>   support, that went away with -j1.  So the tests still run with -j1, as
>>   with the first version of the series.
>> So it doesn't seem to be that bad after all, because it's not
>> "completely breaks" but "random test failures".  Still far from ideal,
>> but the original coverage patch is just about 3 weeks short of a
>> decade old, so maybe things have improved since then, and it'd be
>> worth a try to leave GIT_PROVE_OPTS as is and see what happens.
> It would certainly be nice if the build time could be reduced through
> parallel test runs. I've kicked off a build using GIT_PROVE_OPTS="-j12"
> to see what happens.

I did get a failed test with this run:

t0025-crlf-renormalize.sh                 (Wstat: 256 Tests: 3 Failed: 1)
  Failed test:  2
  Non-zero exit status: 1

This was on the 'jch' branch, and an equivalent build with sequential
execution did not have this failure. That's flaky enough for me to stick
to sequential runs.