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 18:02:03 |
Message-ID: | 059A9825-0101-42B0-9E1C-0F71C2E13E96@enterprisedb.com |
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Thread: | |
Lists: | pgsql-hackers |
> On Aug 8, 2021, at 10:34 AM, Mark Dilger <mark(dot)dilger(at)enterprisedb(dot)com> wrote:
>
> I'll rerun my tests with the new master. I was still using the code that I pulled yesterday.
I am now testing REL_13_STABLE (ba9f665a4413f855bbf4b544481db326f7b9bd73) vs master (c1132aae336c41cf9d316222e525d8d593c2b5d2). The regular expressions we discussed upthread show no differences.
There are a few changes which appear correct to me, but I don't know if you expected them:
select regexp_match('hko', '((((?<!.))))(.(\3)(\1.))');
- regexp_match
---------------
-
+ regexp_match
+--------------------
+ {"","","",hk,"",k}
(1 row)
select 'nigqvigqvee' !~ '(())((\2)\2)(?:([^\W]))';
-ERROR: invalid regular expression: invalid escape \ sequence
+ ?column?
+----------
+ f
+(1 row)
+
select regexp_replace('tl', '.{0}?(((?<![^][^]{1}?)))(.)\2{6}?', 'jx', 'mt');
regexp_replace
----------------
- tl
+ jxl
(1 row)
—
Mark Dilger
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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