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From: Stefan Beller <sbeller@google.com>
To: Jeff King <peff@peff.net>
Cc: "git@vger.kernel.org" <git@vger.kernel.org>,
	Johannes Schindelin <johannes.schindelin@gmx.de>,
	Lars Schneider <larsxschneider@gmail.com>
Subject: Re: [PATCH 2/3] t5615: avoid re-using descriptor 4
Date: Thu, 19 Oct 2017 14:46:33 -0700	[thread overview]
Message-ID: <CAGZ79kYTmUnM+fcf222-cvwB3Fg4+J_xy28E7A3AYryx4qDf_w@mail.gmail.com> (raw)
In-Reply-To: <20171019210730.sgm4g4tmor2dgjv7@sigill.intra.peff.net>

> I also considered trying to bump the "set -x" output descriptor to "9".
> That just moves the problem around, but presumably scripts are less
> likely to go that high. :)
>
> It would also be possible to pick something insanely high, like "999".
> Many shells choke on descriptors higher than 9, but since the issue is
> related to BASH_XTRACEFD, we could make it a bash-only thing. I don't
> know if it's worth the trouble. I hate leaving a subtle "don't use
> descriptor 4 in a subshell or your script will break" hand-grenade like
> this lying around, but we do seem to have only one instance of it over
> the whole test suite.

I would imagine that a higher fd for BASH_XTRACEFD
would be less explosive than requiring the tests to skip
the low number 4. (It is not *that* low. In e.g. git-submodule.sh
we make use of 3 in cmd_foreach, not needing more.)

Thanks,
Stefan

  reply	other threads:[~2017-10-19 21:46 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-10-19 21:01 [PATCH 0/3] making test-suite tracing more useful Jeff King
2017-10-19 21:03 ` [PATCH 1/3] test-lib: silence "-x" cleanup under bash Jeff King
2017-10-19 21:07 ` [PATCH 2/3] t5615: avoid re-using descriptor 4 Jeff King
2017-10-19 21:46   ` Stefan Beller [this message]
2017-10-19 23:23     ` Jeff King
2017-10-20  5:50       ` Jeff King
2017-10-20 21:27         ` Stefan Beller
2017-10-20 22:46           ` Jeff King
2017-10-21  0:19             ` Simon Ruderich
2017-10-21  2:02               ` Junio C Hamano
2017-10-21  3:23               ` Jeff King
2017-10-19 21:08 ` [PATCH 3/3] test-lib: make "-x" work with "--verbose-log" Jeff King
2017-10-23 10:56   ` Johannes Schindelin
2017-10-20 22:53 ` [PATCH 4/3] t/Makefile: introduce TEST_SHELL_PATH Jeff King
2017-10-20 23:50   ` SZEDER Gábor
2017-10-21  3:12     ` Jeff King
2017-10-23 11:01   ` Johannes Schindelin
2017-10-24  1:31     ` Jeff King
2017-10-25 21:35       ` Johannes Schindelin
2017-10-25 21:50         ` Jeff King
2017-10-27 14:26           ` Johannes Schindelin
2017-10-23 11:04 ` [PATCH 0/3] making test-suite tracing more useful Johannes Schindelin
2017-10-24  1:32   ` Jeff King
2017-12-08 10:46 ` [PATCH v2 0/4] " Jeff King
2017-12-08 10:47   ` [PATCH v2 1/4] test-lib: silence "-x" cleanup under bash Jeff King
2017-12-08 10:47   ` [PATCH v2 2/4] t5615: avoid re-using descriptor 4 Jeff King
2017-12-08 10:47   ` [PATCH v2 3/4] test-lib: make "-x" work with "--verbose-log" Jeff King
2017-12-08 10:47   ` [PATCH v2 4/4] t/Makefile: introduce TEST_SHELL_PATH Jeff King
2017-12-08 15:08     ` Johannes Schindelin
2017-12-08 22:00       ` Jeff King
2017-12-09 13:44         ` Johannes Schindelin
2017-12-10 14:23           ` Jeff King
2017-12-11 20:37             ` Junio C Hamano
2017-12-15 10:41               ` Jeff King
2017-12-15 16:58                 ` Junio C Hamano
2017-12-21  9:47                   ` Jeff King

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