Re: BUG #17512: Process running query fails with SIGSEV - nodeMemoize.c:349

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: David Rowley <dgrowleyml(at)gmail(dot)com>
Cc: Aleš Zelený <zeleny(dot)ales(at)gmail(dot)com>, PostgreSQL mailing lists <pgsql-bugs(at)lists(dot)postgresql(dot)org>
Subject: Re: BUG #17512: Process running query fails with SIGSEV - nodeMemoize.c:349
Date: 2022-06-07 23:43:01
Message-ID: 1432708.1654645381@sss.pgh.pa.us
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David Rowley <dgrowleyml(at)gmail(dot)com> writes:
> server closed the connection unexpectedly

Ugh.

> If I patch it with the attached rebustify_memoize_code.patch, I get:
> # explain analyze select * from t1 inner join t1 t2 on t1.a=t2.a where t1.a<=2;
> ERROR: unable to find memoization table entry

> My thoughts are that we likely should make this code more robust,
> despite the bug not being related to a broken data type. I'm only just
> over the fence on that one though. Any thoughts?

Strong +1, but please s/unable to/could not/, per message style
guidelines.

regards, tom lane

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