Re: GROUP BY DISTINCT

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Thomas Munro <thomas(dot)munro(at)gmail(dot)com>
Cc: Tomas Vondra <tomas(dot)vondra(at)enterprisedb(dot)com>, Vik Fearing <vik(at)postgresfriends(dot)org>, Georgios Kokolatos <gkokolatos(at)protonmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Erik Rijkers <er(at)xs4all(dot)nl>
Subject: Re: GROUP BY DISTINCT
Date: 2021-03-18 22:35:42
Message-ID: 3818384.1616106942@sss.pgh.pa.us
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Thomas Munro <thomas(dot)munro(at)gmail(dot)com> writes:
> On Fri, Mar 19, 2021 at 10:14 AM Tomas Vondra
> <tomas(dot)vondra(at)enterprisedb(dot)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

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