GNU bug report logs - #18013
looking-back is inefficient

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From: Andreas Schwab <schwab <at> suse.de>
To: Nicolas Richard <theonewiththeevillook <at> yahoo.fr>
Cc: 18013 <at> debbugs.gnu.org
Subject: bug#18013: 24.3.92; Infloop in re_search_2
Date: Mon, 14 Jul 2014 12:06:55 +0200

Nicolas Richard <theonewiththeevillook <at> yahoo.fr> writes:

> I'll admit that (looking-back "[^\n]") is not exactly the canonical way
> to test for (not (bolp)), but should it make an infloop ? I can't
> reproduce though.

I don't think it infloops, it just takes a very long time.  Since this
is running in a process filter interrupts are disabled, so you have to
be extra careful with what you do here.

Andreas.

-- 
Andreas Schwab, SUSE Labs, schwab <at> suse.de
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