Author: ph10 Date: To: Joel Uckelman CC: pcre-dev@exim.org Subject: Re: [pcre-dev] possible lookaround bug
On Tue, 31 Mar 2015, Joel Uckelman wrote:
> When I try this with PCRE 8.33 on Fedora 20, I get what appears to be an infinite loop:
>
> echo -n a | pcregrep -o '(?<=\Ka)'
>
> pcregrep prints 'a', one per line, until I kill it.
It seems that fuzzing is in fashion. I have received several bug reports
recently that resulted from fuzzers, which are clearly good at inventing
weird patterns that stress the code better than human-invented tests.
I will look at this soon and report back. (But a holiday weekend is
about to happen; I might get to it this week, but it may be next week.)
