From: Richard Guenther <richard.guenther@gmail.com>
To: Diego Novillo <dnovillo@google.com>
Cc: gcc@gcc.gnu.org
Subject: Re: RFC: Improving support for known testsuite failures
Date: Thu, 08 Sep 2011 08:31:00 -0000 [thread overview]
Message-ID: <CAFiYyc2kziNeCaeuXJaO0dOvvHho45GOP-sH7BqV47Q1MxJJiA@mail.gmail.com> (raw)
In-Reply-To: <20110907152813.GA28540@google.com>
On Wed, Sep 7, 2011 at 5:28 PM, Diego Novillo <dnovillo@google.com> wrote:
> One of the most vexing aspects of GCC development is dealing with
> failures in the various testsuites. In general, we are unable to
> keep failures down to zero. We tolerate some failures and tell
> people to "compare your build against a clean build".
>
> This forces developers to either double their testing time by
> building the compiler twice or search in gcc-testresults and hope
> to find a relatively similar build to compare against.
>
> Additionally, the marking mechanisms in DejaGNU are generally
> cumbersome and hard to add. Even worse, depending on the
> controlling script, there may not be an XFAIL marker at all.
>
> So, while we would ideally keep NO failures in the testsuite, the
> reality is that we are content with having KNOWN failures. For a
> given set of failures out of 'make check', I would like to have a
> simple filtering mechanism that prunes the known failures out.
>
> Desired features:
>
> - List of known failures lives in SVN.
> - Each target can have its own list.
> - Supports ignoring FAIL, UNRESOLVED and XPASS results.
> - Supports pattern matching to glob sets of failures.
> - Co-exists with the existing XFAIL support in DejaGNU.
> - Supports flaky tests.
> - Supports timestamps to avoid having tests in a knonw-to-fail
> state forever.
>
> In terms of implementation, this filter could be part of 'make
> check'. We'd pipe make check's output to it and it would decide
> whether to emit FAIL/UNRESOLVED/XPASS lines based on the black
> list.
>
> I could also make this a post-check filter that runs on all the
> generated <tool>.sum files. The filter could live in
> <src>/contrib and be used on demand.
>
> I am not thrilled about the prospect of implementing this in
> DejaGNU directly.
>
> Thoughts?
I think it would be more useful to have a script parse gcc-testresults@
postings from the various autotesters and produce a nice webpage
with revisions and known FAIL/XPASSes for the target triplets that
are tested.
That's been a long time on my TODO list, but my web/script FU is
weak enough that I've been pushing that back.
Maybe you have some web-stuff-capable folks at Google even? ;)
Richard.
>
> Thanks. Diego.
>
next prev parent reply other threads:[~2011-09-08 8:31 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-07 15:28 Diego Novillo
2011-09-07 18:43 ` Andreas Jaeger
2011-09-07 19:57 ` Joseph S. Myers
2011-09-08 8:31 ` Richard Guenther [this message]
2011-09-08 11:05 ` Diego Novillo
2011-09-08 11:16 ` Richard Guenther
2011-09-08 11:34 ` Diego Novillo
2011-09-08 11:49 ` Richard Guenther
2011-09-08 12:14 ` Diego Novillo
2011-09-08 12:20 ` Richard Guenther
2011-09-08 12:26 ` Diego Novillo
2011-09-08 12:30 ` Richard Guenther
2011-09-08 12:33 ` Diego Novillo
2011-09-08 13:24 ` Richard Earnshaw
2011-09-08 13:55 ` Diego Novillo
2011-09-08 14:03 ` Richard Earnshaw
2011-09-08 16:41 ` Joseph S. Myers
2011-09-23 0:07 ` Hans-Peter Nilsson
2011-09-23 13:11 ` Diego Novillo
2011-09-08 16:39 ` Joseph S. Myers
2011-09-08 22:27 ` Michael Hope
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