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Re: Regression in development version of bash w.r.t. associative hashes


From: Chet Ramey
Subject: Re: Regression in development version of bash w.r.t. associative hashes
Date: Mon, 06 May 2013 16:00:16 -0400
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:17.0) Gecko/20130328 Thunderbird/17.0.5

On 5/3/13 5:48 AM, Stefano Lattarini wrote:
> [+cc bug-gnulib, see below for a reason]
> 
> Minimal reproducer of the regression:
> 
>   $ cat foo.bash
>   echo "$BASH_VERSION"
>   declare -A hash
>   echo ${hash[a/b]}
>   echo $?
> 
>   $ /bin/bash foo.bash
>   4.2.45(1)-release
> 
>   0
> 
>   $ ~/bleeding/bin/bash foo.bash
>   4.3.0(1)-alpha
>   foo.bash: line 3: a/b: division by 0 (error token is "b")
>   1
> 
> Notice that the new behaviour breaks the gnulib-tool script
> (that's how I noticed this regression).

You're just not bleeding-edge enough. :-)

That problem was fixed several weeks ago as part of the ongoing cleanup
of `invisible placeholder' variables (variables with attributes but no
values, which are technically unset).

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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