From: Tom Lane <tgl@sss.pgh.pa.us>
To: Thomas Munro <thomas.munro@gmail.com>
cc: Tomas Vondra <tomas.vondra@enterprisedb.com>,
        Vik Fearing <vik@postgresfriends.org>,
        Georgios Kokolatos <gkokolatos@protonmail.com>,
        PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>,
        Erik Rijkers <er@xs4all.nl>
Subject: Re: GROUP BY DISTINCT
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Comments: In-reply-to Thomas Munro <thomas.munro@gmail.com>
	message dated "Fri, 19 Mar 2021 10:57:13 +1300"
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Date: Thu, 18 Mar 2021 18:35:42 -0400
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Thomas Munro <thomas.munro@gmail.com> writes:
> On Fri, Mar 19, 2021 at 10:14 AM Tomas Vondra
> <tomas.vondra@enterprisedb.com> wrote:
>> Thanks for the info. So it's likely related to older gcc releases. The
>> question is how to tweak the code to get rid of this ...

> It's frustrating to have to do press-ups to fix a problem because a
> zombie Debian 7 system is running with -Werror (though it's always
> possible that it's telling us something interesting...).  Anyway, I
> think someone with a GCC < 4.8 compiler would have to investigate.  I
> was hoping to help, but none of my systems have one in easy-to-install
> format...

Hmm ... prairiedog isn't showing the warning, but maybe gaur will.
I can take a look if nobody else is stepping up.

			regards, tom lane