GNU bug report logs - #23031
reporting write errors and handling SIGPIPE

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Reported by: Assaf Gordon <assafgordon <at> gmail.com>

Date: Wed, 16 Mar 2016 16:15:02 UTC

Severity: normal

Done: Assaf Gordon <assafgordon <at> gmail.com>

Bug is archived. No further changes may be made.

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Message #19 received at 23031 <at> debbugs.gnu.org (full text, mbox):

From: Eric Blake <eblake <at> redhat.com>
To: 23031 <at> debbugs.gnu.org, assafgordon <at> gmail.com
Subject: Re: bug#23031: reporting write errors and handling SIGPIPE
Date: Fri, 18 Mar 2016 12:18:05 -0600

[Message part 1 (text/plain, inline)]
On 03/18/2016 11:30 AM, Assaf Gordon wrote:

> I found that on my weird setup, programs start with SIGPIPE set to
> SIG_IGN by default (not sure how I got myself into such situation).

There have been various automated robot testsuite runners (such as
Jenkins at one point in the past, although I don't know if it is still
the case) that do the equivalent of 'trap - PIPE' in their master shell;
then the rules of POSIX say that 'sh' can't do anything to undo that
setting (it's very annoying - inheriting ignored SIGPIPE is impossible
to undo in straight shell, and requires an intermediary C program).

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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This bug report was last modified 9 years and 152 days ago.

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