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From: Tom Lane <tgl@sss.pgh.pa.us>
To: LEMAIRE Leslie (Chargée de mission) - SG/DNUM/UNI/DRC <leslie.lemaire@developpement-durable.gouv.fr>
Cc: pgsql-bugs@lists.postgresql.org
Subject: Re: Cast to regrole on a literal string in a PL/pgSQL function
Date: Mon, 29 Sep 2025 13:34:33 -0400
Message-ID: <218022.1759167273@sss.pgh.pa.us> (raw)
In-Reply-To: <da2802eab456f4ec168b5053023bafd7@developpement-durable.gouv.fr>
References: <da2802eab456f4ec168b5053023bafd7@developpement-durable.gouv.fr>

=?UTF-8?Q?LEMAIRE_Leslie_=28Charg=C3=A9e_de_mission=29_=2D_SG=2FDNUM=2F?= =?UTF-8?Q?UNI=2FDRC?= <leslie.lemaire@developpement-durable.gouv.fr> writes:
> I've noticed a rather odd behavior with a PL/pgSQL function whose 
> definition includes a cast to regrole on a literal string, such as 
> 'a_role'::regrole.

Yeah, the coverage for REG* constants in plan invalidation is pretty
thin --- in fact, I think this *only* works correctly for regclass
constants.  AFAIR you're the first to complain, so I'm not sure that
we want to expend the effort to expand that ...

			regards, tom lane





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