Re: Internal error with gawk-5.3.0

[arnold]

"Miguel Pineiro Jr." <mpj@pineiro.cc> wrote:

> I can replicate the core dump of the program in the original report, but 
> simplified it to:
>
> LC_CTYPE=en_US.UTF-8 ./gawk 'BEGIN { print match (m, /a?/) }'
>
> LC_CTYPE=C works fine. And in a multibyte locale it also works if the 
> uinitialized m is replaced with an empty string literal.
>
> This is very likely related to changes made a few months ago to fix 
> zero-length matches in multibyte locales: 
> https://git.savannah.gnu.org/cgit/gawk.git/commit/?id=c85749daba596ba2b827bcea239db74fc5321665
>
> I'm going to take a look at it right now, to see if I can help get this fixed 
> quickly.
>
> Miguel

Thanks for the much simpler reproducer.  If you can fix it, that'd be great.
Otherwise, I should be able to look into it over the next day or so.

Arnold