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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Thomas Munro <thomas.munro@gmail.com>
Cc: Peter Eisentraut <peter@eisentraut.org>
Cc: Sam James <sam@gentoo.org>
Cc: pgsql-bugs@lists.postgresql.org
Subject: Re: Build failure with GCC 15 (defaults to -std=gnu23)
Date: Mon, 25 Nov 2024 21:13:11 -0500
Message-ID: <1578470.1732587191@sss.pgh.pa.us> (raw)
In-Reply-To: <CA+hUKG+5ErSyS2+rqx0bvKAWadP9NQBOsUgZVpz74ZB0DA=nJw@mail.gmail.com>
References: <87o72eo9iu.fsf@gentoo.org>
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	<3169079.1731880169@sss.pgh.pa.us>
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	<3175762.1731883847@sss.pgh.pa.us>
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	<dec2bd5b-66e3-4750-83ef-e597d539c2f4@eisentraut.org>
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	<485f5982-18c5-4210-9c7d-7c05453f7033@eisentraut.org>
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	<1447160.1732565223@sss.pgh.pa.us>
	<CA+hUKG+5ErSyS2+rqx0bvKAWadP9NQBOsUgZVpz74ZB0DA=nJw@mail.gmail.com>

Thomas Munro <thomas.munro@gmail.com> writes:
> ... I think it might be unlikely to
> upset anyone if it works something like this:

> * For 16+ nothing, we're going to be C23 clean (after a couple more
> back-patches)
> * For 9.2-15 on GCC < 15 it'll stay as nothing too
> * For 9.2-15 on early GCC 15 adopter distros like Fedora/Gentoo etc
> we'll detect C23, and perhaps start spitting out -std=c17 (if you've
> detected C23, I think you can assume that C17 is available so we don't
> have to do a C17-C11-C99[-C89] search?)
> * When 12-15 fall out of support and all compilers are eventually C23+
> compilers, they'll eventually always be getting -std=c17 by the above
> rules but no one will mind about that in the ancient branches

Sounds plausible to me.  Will you work on making that happen?

			regards, tom lane





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  Subject: Re: Build failure with GCC 15 (defaults to -std=gnu23)
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