From: | Mark Dilger <mark(dot)dilger(at)enterprisedb(dot)com> |
---|---|
To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: Assert triggered during RE_compile_and_cache |
Date: | 2021-08-08 17:28:55 |
Message-ID: | 653CCDC0-C99A-4F9A-A38C-CC4F2D0B4557@enterprisedb.com |
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Thread: | |
Lists: | pgsql-hackers |
> On Aug 8, 2021, at 10:15 AM, Mark Dilger <mark(dot)dilger(at)enterprisedb(dot)com> wrote:
>
> But these next two look to me correct before the patch and wrong after:
>
> select regexp_matches('ircecpbgyiggvtruqgxzigxzigxzisdbkuhbkuhrvl', '(((.)))(?:(\3))[^\f]');
> regexp_matches
> ----------------
> -(0 rows)
> + {g,g,g,g}
> +(1 row)
>
> select regexp_matches('fhgxnvbvjaej', '(((.)).)((\3)((.)))', 'csx');
> - regexp_matches
> -----------------
> -(0 rows)
> + regexp_matches
> +-------------------
> + {vb,v,v,vj,v,j,j}
> +(1 row)
Scratch that. On further thought, these also look correct. I wasn't doing the capturing in my head correctly. So I think the patch is working! I'll test a bit longer.
Is this patch (alternate-backref-corner-case-fix-1.patch) the current state of your patch set? I'd like to be sure I'm testing your latest work. Thanks.
—
Mark Dilger
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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