Re: [PATCH] Fix null pointer dereference in PG19

jian he <jian.universality@gmail.com>

From: jian he <jian.universality@gmail.com>

To: Tom Lane <tgl@sss.pgh.pa.us>

Cc: Aleksander Alekseev <aleksander@tigerdata.com>, PostgreSQL Development <pgsql-hackers@postgresql.org>, Paul A Jungwirth <pj@illuminatedcomputing.com>

Date: 2026-04-24T04:44:35Z

Lists: pgsql-hackers

Attachments

v7-0001-FOR-PORTION-OF-guard-against-FDW.patch (text/x-patch) patch v7-0001

On Tue, Apr 21, 2026 at 11:24 PM Tom Lane <tgl@sss.pgh.pa.us> wrote:
>
> * I'd tend to move the anti-FDW check to execution too.
> It's not actively wrong, since nowadays we don't permit
> relations to change relkind, but it seems out of place.
> Also, it seems inadequate to deal with the case of a target
> that is a partitioned table having FDW partitions.
>
Hi.

Instead of adding another subnode in CheckValidResultRel,
I am passing ModifyTable to it, this will be more future-proof.



--
jian
https://www.enterprisedb.com/