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Re: Bug#251378: zsh: segfaults when globing includes too many files

X-seq: zsh-workers 20172
From: Peter Stephenson <pws@xxxxxxxxxxxxxxxxxxxxxxxx>
To: zsh-workers@xxxxxxxxxx
Subject: Re: Bug#251378: zsh: segfaults when globing includes too many files
Date: Sat, 17 Jul 2004 20:06:49 +0100
Cc: 251378@xxxxxxxxxxxxxxx, 259768@xxxxxxxxxxxxxxx, 251378-submitter@xxxxxxxxxxxxxxx, 259768-submitter@xxxxxxxxxxxxxxx, mdz@xxxxxxxxxx
In-reply-to: "Clint Adams"'s message of "Fri, 16 Jul 2004 15:46:10 EDT." <20040716194610.GA28706@xxxxxxxxxxx>
Mailing-list: contact zsh-workers-help@xxxxxxxxxx; run by ezmlm

Clint Adams wrote:
> > Attached is a script from Peter Palfrader which seems to trigger the
> > same type of segfault in zhalloc().

Yep, does that for me too (no use of mremap), so this should be very
useful.

> This is HEAD with the mremap patch, which seems to be irrelevant.
> Should dyncat(s,"") just duplicate s, or should that be avoided earlier?
> 
> #0  0x0007cb78 in zhalloc (size=32) at /home/clint/tmp/zsh/Src/mem.c:353
> #1  0x000b2bd0 in dyncat (s1=0x10de88 ".Maillists.aaaa.2004.06/", s2=0x7001e1
> cc "")
>     at /home/clint/tmp/zsh/Src/string.c:100

That certainly shouldn't be a problem, as long as it's a valid pointer,
which it seems to be.

-- 
Peter Stephenson <pws@xxxxxxxxxxxxxxxxxxxxxxxx>
Work: pws@xxxxxxx
Web: http://www.pwstephenson.fsnet.co.uk

References:
- Re: Bug#251378: zsh: segfaults when globing includes too many files
  - From: Clint Adams

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