Received: from malur.postgresql.org ([217.196.149.56])
	by arkaria.postgresql.org with esmtps  (TLS1.3) tls
 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
	(Exim 4.96)
	(envelope-from <pgsql-hackers-owner+archive@lists.postgresql.org>)
	id 1vURx8-00BTw9-1f
	for pgsql-hackers@arkaria.postgresql.org;
	Sat, 13 Dec 2025 15:54:39 +0000
Received: from localhost ([127.0.0.1] helo=malur.postgresql.org)
	by malur.postgresql.org with esmtp (Exim 4.96)
	(envelope-from <pgsql-hackers-owner+archive@lists.postgresql.org>)
	id 1vURx7-00Az3q-1V
	for pgsql-hackers@arkaria.postgresql.org;
	Sat, 13 Dec 2025 15:54:38 +0000
Received: from makus.postgresql.org ([2001:4800:3e1:1::229])
	by malur.postgresql.org with esmtps  (TLS1.3) tls
 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
	(Exim 4.96)
	(envelope-from <tgl@sss.pgh.pa.us>)
	id 1vURx7-00Az3h-0a
	for pgsql-hackers@lists.postgresql.org;
	Sat, 13 Dec 2025 15:54:37 +0000
Received: from sss.pgh.pa.us ([68.162.161.243])
	by makus.postgresql.org with esmtps  (TLS1.3) tls
 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
	(Exim 4.96)
	(envelope-from <tgl@sss.pgh.pa.us>)
	id 1vURx6-000USI-1V
	for pgsql-hackers@lists.postgresql.org;
	Sat, 13 Dec 2025 15:54:37 +0000
Received: from sss1.sss.pgh.pa.us (localhost [127.0.0.1])
	by sss.pgh.pa.us (8.15.2/8.15.2) with ESMTP id 5BDFsXiJ1178695;
	Sat, 13 Dec 2025 10:54:33 -0500
From: Tom Lane <tgl@sss.pgh.pa.us>
To: Alexander Lakhin <exclusion@gmail.com>
cc: Chao Li <li.evan.chao@gmail.com>, jian he <jian.universality@gmail.com>,
        pgsql-hackers@lists.postgresql.org
Subject: Re: Making jsonb_agg() faster
In-reply-to: <ec5e96fb-ee49-4e5f-8a09-3f72b4780538@gmail.com>
References: <1060917.1753202222@sss.pgh.pa.us>
 <CACJufxHuE-P0s1PxiRja26ZMjKUZiCAgWa1jedswo94SFzjXMg@mail.gmail.com>
 <617666.1755277022@sss.pgh.pa.us>
 <CACJufxGHLYtvOAB7uA59C9Lz+rDPta5Egiii-B5opsZbw6eDDQ@mail.gmail.com>
 <654628.1755297629@sss.pgh.pa.us> <2129790.1755889894@sss.pgh.pa.us>
 <68A1061C-81A5-46AA-AFA9-48294908254C@gmail.com>
 <2613D418-67E0-4DD8-BDA6-AB1BB04DB1A2@gmail.com>
 <2466173.1756498180@sss.pgh.pa.us> <163563.1762117009@sss.pgh.pa.us>
 <AAFBCC62-1295-4084-8CBC-2026C9075A3C@gmail.com>
 <354608.1762195230@sss.pgh.pa.us> <2052300.1763664997@sss.pgh.pa.us>
 <1985954.1764976473@sss.pgh.pa.us>
 <A8FC96CD-BA0E-43A2-A49D-B6C13030D34A@gmail.com>
 <2329959.1765047648@sss.pgh.pa.us>
 <0C8ACF97-C1F0-43EA-B8FD-CD7E7ECB8190@gmail.com>
 <2731915.1765126681@sss.pgh.pa.us>
 <ec5e96fb-ee49-4e5f-8a09-3f72b4780538@gmail.com>
Comments: In-reply-to Alexander Lakhin <exclusion@gmail.com>
	message dated "Sat, 13 Dec 2025 13:00:00 +0200"
MIME-Version: 1.0
Content-Type: text/plain; charset="UTF-8"
Content-ID: <1178693.1765641273.1@sss.pgh.pa.us>
Content-Transfer-Encoding: 8bit
Date: Sat, 13 Dec 2025 10:54:33 -0500
Message-ID: <1178694.1765641273@sss.pgh.pa.us>
List-Id: <pgsql-hackers.lists.postgresql.org>
List-Help: <https://lists.postgresql.org/manage/>
List-Subscribe: <https://lists.postgresql.org/manage/>
List-Post: <mailto:pgsql-hackers@lists.postgresql.org>
List-Owner: <mailto:pgsql-hackers-owner@lists.postgresql.org>
List-Archive: <https://www.postgresql.org/list/pgsql-hackers>
Archived-At: 
 <https://www.postgresql.org/message-id/1178694.1765641273%40sss.pgh.pa.us>
Precedence: bulk

Alexander Lakhin <exclusion@gmail.com> writes:
> I and SQLsmith have discovered that the following query:
> select jsonb_object_agg_unique_strict(i, null) over (order by i) from
>            (select i from generate_series(1, 20) g(i));

> triggers SIGSEGV:

Thanks for the report!  It seems to be specific to use as a window
function; I see no problem without the OVER clause.  Will look closer
later.

			regards, tom lane