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Date: Wed, 22 Oct 2003 21:34:56 -0700
From: Robert Spier <rspier [...] pobox.com>
To: perlbug [...] perl.org
Subject: METABUG - regex stack overflow issues
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This is a meta-bug. It's purpose is to be linked to/from other tickets of the same type for tracking purposes. (Via "DependsOn") This ticket is for bugs related to the overflow of the OS stack during recursion in the perl regex engine. Generally they can be "worked around" by increasing the stack size by using ulimit (bash/sh/ksh/zsh) or limit (csh/tcsh). The long term plan is to rewrite the regex engine to not use the stack for recursion.
RT-Send-CC: perl5-porters [...] perl.org
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> [rspier@pobox.com - Wed Oct 22 21:35:51 2003]: > > > > This is a meta-bug. It's purpose is to be linked to/from other > tickets of the same type for tracking purposes. (Via "DependsOn") > > This ticket is for bugs related to the overflow of the OS stack during > recursion in the perl regex engine. > > Generally they can be "worked around" by increasing the stack size by > using ulimit (bash/sh/ksh/zsh) or limit (csh/tcsh). > > The long term plan is to rewrite the regex engine to not use the stack > for recursion. >
All other tickets depending on this ticket have been resolved.
CC: perl5-porters [...] perl.org
Subject: Re: [perl #24274] METABUG - regex stack overflow issues
Date: Wed, 29 Mar 2006 11:56:35 +0100
To: perlbug-followup [...] perl.org
From: hv [...] crypt.org
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"Steve Peters via RT" <perlbug-followup@perl.org> wrote: :All other tickets depending on this ticket have been resolved. Cool, but expect to find many more that weren't linked to the metabug. Hugo
CC: perlbug-followup [...] perl.org, perl5-porters [...] perl.org
Subject: Re: [perl #24274] METABUG - regex stack overflow issues
Date: Wed, 29 Mar 2006 09:46:17 -0600
To: hv [...] crypt.org
From: Steve Peters <steve [...] fisharerojo.org>
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On Wed, Mar 29, 2006 at 11:56:35AM +0100, hv@crypt.org wrote: Show quoted text
> "Steve Peters via RT" <perlbug-followup@perl.org> wrote: > :All other tickets depending on this ticket have been resolved. > > Cool, but expect to find many more that weren't linked to the metabug.
Yes, I'm looking into the additional tickets related to this problem. The nice thing to notice, so far, is that there seems to have been an unintended optimization. I haven't benchmarked anything before or after the change, but it certainly seems that blowing the stack was quite time consuming :) Steve Peters steve@fisharerojo.org
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