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Re: failures with parallel tests


From: Gavin Smith
Subject: Re: failures with parallel tests
Date: Sun, 18 May 2014 18:13:15 +0100

On Sun, May 18, 2014 at 12:47 PM, Patrice Dumas <address@hidden> wrote:
> Hello,
>
> With info tests, when doing parallel tests, with
> make -j8 check
> for example, there may be some failures that do not happen for
> sequantial tests.  It is not that much reproducible.  There is something
> in the log that could point to the issue though:
>
> FAIL: t/body-start.sh
> =====================
>
> t/Init-intera.inc: line 21: /dev/pts/36: No such file or directory
>
> The test that fail is not always the same, bug the error message is the
> same.

I can't reproduce this. I've added debugging print statements to
pseudotty.c, which will be recorded in the *.log files. If you could
try it again, you could have another look to see if this gives us any
more idea what is causing this.

Different test runs could be killing each others pseudotty instances,
but I can't see how this could happen. Or different tests could be
ending up with the same pts, but all tests I did make this unlikely
(every call to getpt() creates a new pts file in /dev/pts/), and even
if this did happen, it shouldn't matter. Or pseudotty could be failing
and not opening (or closing) the slave file - but this would have to
be after it had printed the name of the file to stdout, considering
your error message above.



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