From: | Thomas Munro <thomas(dot)munro(at)gmail(dot)com> |
---|---|
To: | Tomas Vondra <tomas(dot)vondra(at)enterprisedb(dot)com> |
Cc: | 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 21:57:13 |
Message-ID: | CA+hUKG+6mHO82VCp9TYLcwf_x8qjd-jrxLnYCTpZOebmnrLzww@mail.gmail.com |
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On Fri, Mar 19, 2021 at 10:14 AM Tomas Vondra
<tomas(dot)vondra(at)enterprisedb(dot)com> wrote:
> >> The only possibility I can think of is some sort of issue in the old-ish
> >> gcc release (4.7.2).
> >
> > No sure what's going on there, but data points: I tried a 32 bit build
> > here (that's the other special thing about lapwing) and didn't see the
> > warning. GCC 10. Also curculio (gcc 4.2) and snapper (gcc 4.7) are
> > also showing this warning, but they don't have -Werror so they don't
> > fail. sidewinder (gcc 4.8) is not showing the warning.
> >
>
> 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...
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