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 4.94.2)
	(envelope-from <pgsql-interfaces-owner+archive@lists.postgresql.org>)
	id 1tP20N-009mcW-QZ
	for pgsql-interfaces@arkaria.postgresql.org; Sat, 21 Dec 2024 16:07:04 +0000
Received: from localhost ([127.0.0.1] helo=malur.postgresql.org)
	by malur.postgresql.org with esmtp (Exim 4.94.2)
	(envelope-from <pgsql-interfaces-owner+archive@lists.postgresql.org>)
	id 1tP20M-00A50E-Nk
	for pgsql-interfaces@arkaria.postgresql.org; Sat, 21 Dec 2024 16:07:02 +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 4.94.2)
	(envelope-from <tgl@sss.pgh.pa.us>)
	id 1tP20M-00A505-GG
	for pgsql-interfaces@lists.postgresql.org; Sat, 21 Dec 2024 16:07:02 +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 4.94.2)
	(envelope-from <tgl@sss.pgh.pa.us>)
	id 1tP20J-000hVY-LU
	for pgsql-interfaces@postgresql.org; Sat, 21 Dec 2024 16:07:01 +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 4BLG6wmw860903;
	Sat, 21 Dec 2024 11:06:58 -0500
From: Tom Lane <tgl@sss.pgh.pa.us>
To: Jeroen Vermeulen <jtvjtv@gmail.com>
cc: pgsql-interfaces@postgresql.org
Subject: Re: libpq: make PGresult* "const" in PQcmdStatus()/PQcmdTuples()?
In-reply-to: <859822.1734796591@sss.pgh.pa.us>
References: 
 <CA+zULE6XGuMU8ND38ABLxgBTN-YFzcnq+MCVb6Tyxgg6ZxYFXw@mail.gmail.com>
 <859822.1734796591@sss.pgh.pa.us>
Comments: In-reply-to Tom Lane <tgl@sss.pgh.pa.us>
	message dated "Sat, 21 Dec 2024 10:56:31 -0500"
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-ID: <860901.1734797218.1@sss.pgh.pa.us>
Content-Transfer-Encoding: quoted-printable
Date: Sat, 21 Dec 2024 11:06:58 -0500
Message-ID: <860902.1734797218@sss.pgh.pa.us>
List-Id: <pgsql-interfaces.lists.postgresql.org>
List-Help: <https://lists.postgresql.org/manage/>
List-Subscribe: <https://lists.postgresql.org/manage/>
List-Post: <mailto:pgsql-interfaces@lists.postgresql.org>
List-Owner: <mailto:pgsql-interfaces-owner@lists.postgresql.org>
List-Archive: <https://www.postgresql.org/list/pgsql-interfaces>
Archived-At: 
 <https://www.postgresql.org/message-id/860902.1734797218%40sss.pgh.pa.us>
Precedence: bulk

I wrote:
> Both of those return pointers to res->cmdStatus, so it would not make
> any sense to const-ify the argument unless you also const-ify the
> result; which would cause compiler warnings for users.  I'm pretty
> sure we've explicitly rejected making this change for that reason.

[ digs in archives... ]

See previous discussions here:

https://www.postgresql.org/message-id/flat/NCBBLFLGLEIDHCJLONHNKEDGFJAA.md=
klatt%40ou.edu

and here:

https://www.postgresql.org/message-id/flat/E1RaRtZ-0008aS-MK%40hans3

			regards, tom lane