From: Duncan Sinclair <duncan.sinclair@cis.strath.ac.uk>
To: zsh-workers@zsh.org
Subject: Re: [PATCH] Removed arbitrary limitations on array accesses
Date: Wed, 6 Jan 2010 13:42:03 +0000 [thread overview]
Message-ID: <CD9DD5CC-D5C7-4F9F-90F4-5039F535FABB@cis.strath.ac.uk> (raw)
In-Reply-To: <20100105094829.613883ab@news01>
On 5 Jan 2010, at 9:48 am, Peter Stephenson wrote:
> On Mon, 4 Jan 2010 20:38:17 -0500
> Michael Hwang <michael.a.hwang@gmail.com> wrote:
>> This issue was brought up on IRC. It appears that while there is no
>> limit on
>> how many array elements can be stored, there is a limit to how many
>> can be
>> accessed. This patch removes these limits.
>
> Those have been there for a long time. I don't have any evidence that
> they're doing a lot of good but we have had people creating positional
> parameters with <long_number>=something and wondering why it uses a
> lot of
> memory. I suppose this is similar. The arbitrary limit is not very
> useful and also undocumented; most people wouldn't miss it if it
> wasn't
> there, certainly.
IIRC, the problem was that is you typed a big number at the zsh prompt
and hit tab, the shell would either hang for a long time or crash (out
of memory).
% 99999999999<tab>
I reported this as a bug – the shell should not crash so easily.
There is probably a way of preventing this problem though without
putting arbitrary limits on the size of array indices.
--
Duncan Sinclair | {+44|0}141 548 3592 | cis.strath.ac.uk
System Administrator
Computer and Information Sciences
University of Strathclyde
The University of Strathclyde is a charitable body, registered in
Scotland, number SC015263.
next prev parent reply other threads:[~2010-01-06 13:55 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-05 1:38 Michael Hwang
2010-01-05 9:48 ` Peter Stephenson
2010-01-05 15:32 ` Bart Schaefer
2010-01-05 15:43 ` Mikael Magnusson
2010-01-05 20:48 ` Geoff Wing
2010-01-06 13:42 ` Duncan Sinclair [this message]
2010-01-06 14:02 ` Mikael Magnusson
2010-01-06 17:03 ` Richard Hartmann
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