From: "Loïc Minier" <lool@dooz.org>
To: dash@vger.kernel.org
Subject: exit-ing in a trap handler uses the wrong exit code
Date: Sat, 25 Sep 2010 13:59:00 +0200 [thread overview]
Message-ID: <20100925115900.GA9732@bee.dooz.org> (raw)
Hi there
qemu's configure uses a trap handler which calls exit; configure would
call exit 1, but with the trap handler in place the configure script
would return with exit 0.
dash -c 'trap "sh -c \"exit 4\"; exit" 0 1 2 3 9 11 13 15;exit 3'; echo $?
4
Blue Swirl on the qemu-devel list points out that according to POSIX
this should be 3:
http://www.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_21
bash and zsh get this right:
bash -c 'trap "sh -c \"exit 4\"; exit" 0 1 2 3 9 11 13 15;exit 3'; echo $?
3
I've logged https://bugs.launchpad.net/ubuntu/+source/dash/+bug/647450
to track this as I'm seeing this with the Ubuntu version of dash.
Cheers,
NB: Not subscribed to the list, please Cc: me on replies
--
Loïc Minier
next reply other threads:[~2010-09-25 12:17 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-25 11:59 Loïc Minier [this message]
2010-09-25 20:34 ` exit-ing in a trap handler uses the wrong exit code Jilles Tjoelker
2010-09-25 21:42 ` Loïc Minier
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