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Re: Bash wrongly attaches subcommand stdin on syntax error


From: Chet Ramey
Subject: Re: Bash wrongly attaches subcommand stdin on syntax error
Date: Fri, 10 Apr 2015 16:09:28 -0400
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:31.0) Gecko/20100101 Thunderbird/31.6.0

On 4/7/15 6:56 AM, Sam Liddicott wrote:

> Bash Version: 4.3
> Patch Level: 11
> Release Status: release
> 
> Description:
>     Shell wrongly attaches stdin piped to command sequence with syntax error
> 
> Repeat-By:
>     On a login shell or interactive shell, paste the following command:
> 
>     for x in 1 ; do echo $( { echo } ) ; done < <( echo touch /tmp/x2 )
> 
>     The handling of the syntax error will cause stdin of the command
>     to become attached to the login shell, which will then execute:
>       touch /tmp/x2
>     and then logout.

Thanks for the report.  This will be fixed in the next release of bash.

Chet

-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU    address@hidden    http://cnswww.cns.cwru.edu/~chet/



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