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-bugs-owner+archive@lists.postgresql.org>)
	id 1wRdc7-002Xkb-2j
	for pgsql-bugs@arkaria.postgresql.org;
	Mon, 25 May 2026 22:17:35 +0000
Received: from localhost ([127.0.0.1] helo=malur.postgresql.org)
	by malur.postgresql.org with esmtp (Exim 4.96)
	(envelope-from <pgsql-bugs-owner+archive@lists.postgresql.org>)
	id 1wRdc5-002En9-0r
	for pgsql-bugs@arkaria.postgresql.org;
	Mon, 25 May 2026 22:17:34 +0000
Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29])
	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 1wRdc5-002Emy-06
	for pgsql-bugs@lists.postgresql.org;
	Mon, 25 May 2026 22:17:33 +0000
Received: from sss.pgh.pa.us ([68.162.161.243])
	by magus.postgresql.org with esmtps  (TLS1.3) tls
 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
	(Exim 4.98.2)
	(envelope-from <tgl@sss.pgh.pa.us>)
	id 1wRdc4-00000001Q5j-02Z5
	for pgsql-bugs@lists.postgresql.org;
	Mon, 25 May 2026 22:17:33 +0000
Received: from sss1.sss.pgh.pa.us (localhost [127.0.0.1])
	by sss.pgh.pa.us (8.18.1/8.18.1) with ESMTP id 64PMHPGY210877;
	Mon, 25 May 2026 18:17:26 -0400
From: Tom Lane <tgl@sss.pgh.pa.us>
To: "=?gb18030?B?emVuZ21hbg==?=" <zengman@halodbtech.com>
cc: "=?gb18030?B?cGdzcWwtYnVncw==?=" <pgsql-bugs@lists.postgresql.org>
Subject: Re: BUG #19492: intarray: fix variable stats leak in _int_matchsel
In-reply-to: <tencent_2A45F05A121B319D26615D01@qq.com>
References: <19492-ddcd0e22399ef85a@postgresql.org>
 <tencent_2A45F05A121B319D26615D01@qq.com>
Comments: In-reply-to "=?gb18030?B?emVuZ21hbg==?=" <zengman@halodbtech.com>
	message dated "Sun, 24 May 2026 13:15:43 +0800"
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-ID: <210875.1779747445.1@sss.pgh.pa.us>
Date: Mon, 25 May 2026 18:17:25 -0400
Message-ID: <210876.1779747445@sss.pgh.pa.us>
List-Id: <pgsql-bugs.lists.postgresql.org>
List-Help: <https://lists.postgresql.org/manage/>
List-Subscribe: <https://lists.postgresql.org/manage/>
List-Post: <mailto:pgsql-bugs@lists.postgresql.org>
List-Owner: <mailto:pgsql-bugs-owner@lists.postgresql.org>
List-Archive: <https://www.postgresql.org/list/pgsql-bugs>
Archived-At: 
 <https://www.postgresql.org/message-id/210876.1779747445%40sss.pgh.pa.us>
Precedence: bulk

"=?gb18030?B?emVuZ21hbg==?=" <zengman@halodbtech.com> writes:
> Patch attached. Also added a test case that exercises this code path
> by creating a text operator with _int_matchsel as the restriction
> estimator.

Good catch, pushed.  I didn't bother with the test case though ---
none of the other early exits in that function have test cases,
and I don't see why this one is any more fragile than the others.

			regards, tom lane