Re: gcc 13 warnings

Hi,

On 2023-03-16 12:10:27 -0400, Tom Lane wrote:
> Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> writes:
> > čt 16. 3. 2023 v 16:43 odesílatel Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> napsal:
> >> Hmm, I do not see any warnings on HEAD with Fedora 37's gcc 12.2.1.
> >> What non-default configure switches, CFLAGS, etc are you using?
>
> > meson build without any settings
> > I think so it is related to meson build, I didn't see these warnings with
> > autoconf
>
> It wouldn't be entirely surprising if meson is selecting some -W
> switches that the configure script doesn't ... but I don't know
> where to check or change that.

I think it's just that meson defaults to -O3 (fwiw, I see substantial gains of
that over -O2). I see such warnings with autoconf as well if I make it use
-O3.

I think some of these are stemming from
https://postgr.es/m/20230204130708.pta7pjc4dvu225ey%40alap3.anarazel.de

Greetings,

Andres Freund