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Re: Latest fix for DEBUG causes pipes to fail when used with trap and an
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From: |
Chet Ramey |
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Subject: |
Re: Latest fix for DEBUG causes pipes to fail when used with trap and an interactive shell |
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Date: |
Fri, 28 Feb 2014 10:59:02 -0500 |
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User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:24.0) Gecko/20100101 Thunderbird/24.1.1 |
On 2/28/14 2:48 AM, Moe Tunes wrote:
> Machine Type: i686-pc-linux-gnu
>
> Bash Version: 4.3
> Patch Level: 0
> Release Status: release
>
> Description:
> Pipes stop working in this version when DEBUG is used with trap in an
> interactive shell
It turns out that this is Linux-specific only to the extent that Linux
requires process group synchronization. One of the changes to trap
handling added a level of saving state that was redundant in the case of
the DEBUG trap, and that broke this synchronization. I've attached a
patch that fixes the problem.
Chet
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU chet@case.edu http://cnswww.cns.cwru.edu/~chet/
debug-trap.patch
Description: Source code patch