From: Ricky Zhou <ricky@rzhou.org>
To: zsh-workers@zsh.org
Subject: Re: Certain pattern causing shell to crash
Date: Thu, 6 Jan 2011 13:51:35 -0500 [thread overview]
Message-ID: <20110106185134.GA10630@alpha.rzhou.org> (raw)
In-Reply-To: <20110106182201.27da4de9@pwslap01u.europe.root.pri>
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On 2011-01-06 06:22:01 PM, Peter Stephenson wrote:
> Yes, I can get that. The following is about the most simple form that
> still causes it to happen:
>
> crashme() {
> if [[ $1 =~ ^http:* ]]
> then
> url=${1#*=}
> fi
> }
> which crashme
>
> It appears that the code that decodes the '=~' expression (it doesn't
> happen if I turn that into '=') is causing the state to go awry, so that
> the code in the line after the "then" is being read wrongly. It's got
> something to do with the regular expression, too; putting that in
> parentheses or otherwise quoting the "^" makes it go away, so it maybe
> related to how "^" is handled in this case. It shouldn't be too hard to
> localise; it's a shame that the the wordcode is completely
> impenetrable.
For what it's worth, I did a git bisect, and the segfault was introduced
in d234059b1c6493e5eefb6c28aa2b8a021d894d51. Hopefully this can be of
use to somebody more familiar with how this code works.
Thanks,
Ricky
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next prev parent reply other threads:[~2011-01-06 18:51 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-06 16:08 Raghavendra D Prabhu
2011-01-06 18:22 ` Peter Stephenson
2011-01-06 18:51 ` Ricky Zhou [this message]
2011-01-06 19:54 ` Peter Stephenson
2011-01-06 20:23 ` Mikael Magnusson
2011-01-07 20:35 ` Phil Pennock
2011-01-08 20:10 ` Peter Stephenson
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