From: Tom Lane <tgl@sss.pgh.pa.us>
To: Alexander Lakhin <exclusion@gmail.com>
cc: Robert Haas <robertmhaas@gmail.com>,
        PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Subject: Re: TupleDescAttr bounds checks
In-reply-to: <6f435023-8ab6-47c2-ba07-035d0c4212f9@gmail.com>
References: 
 <CA+TgmoacixUZVvi00hOjk_d9B4iYKswWP1gNqQ8Vfray-AcOCA@mail.gmail.com>
 <1628959.1774023745@sss.pgh.pa.us>
 <CA+TgmoaiPqnV2ePY-DyQUVGnK5sJ5ryPCDYpn_+1Ua4JwfoqRw@mail.gmail.com>
 <1631625.1774025167@sss.pgh.pa.us> <3429884.1774238081@sss.pgh.pa.us>
 <CA+TgmoZgc1m5Z7RFf9U7s_DgXE8GqnOB95fEWurdKFMR_U2xpQ@mail.gmail.com>
 <6f435023-8ab6-47c2-ba07-035d0c4212f9@gmail.com>
Comments: In-reply-to Alexander Lakhin <exclusion@gmail.com>
	message dated "Sat, 04 Apr 2026 17:00:00 +0300"
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-ID: <3956198.1775313002.1@sss.pgh.pa.us>
Date: Sat, 04 Apr 2026 10:30:02 -0400
Message-ID: <3956199.1775313002@sss.pgh.pa.us>
Archived-At: 
 <https://www.postgresql.org/message-id/3956199.1775313002%40sss.pgh.pa.us>
Precedence: bulk

Alexander Lakhin <exclusion@gmail.com> writes:
> I've found a way to trigger the Assert added in c98ad086a:
> CREATE TABLE t(i int);
> COPY t FROM stdin WHERE tableoid > 0;
> server closed the connection unexpectedly

Good catch.  I bet it's possible to trigger the Assert just above,
too, with a WHERE expression using "t.*".

			regards, tom lane