From: Tom Lane <tgl@sss.pgh.pa.us>
To: Thomas Munro <thomas.munro@gmail.com>
cc: Sam James <sam@gentoo.org>, pgsql-bugs@lists.postgresql.org
Subject: Re: Build failure with GCC 15 (defaults to -std=gnu23)
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Comments: In-reply-to Thomas Munro <thomas.munro@gmail.com>
	message dated "Mon, 18 Nov 2024 11:45:24 +1300"
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Date: Sun, 17 Nov 2024 17:50:47 -0500
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Thomas Munro <thomas.munro@gmail.com> writes:
> It sounds like we should stop using the old and broken
> AC_CHECK_HEADER_STDBOOL macro.

Yeah, that's what I was imagining: assume that <stdbool.h> exists
and works, and check only to see if sizeof(bool) is acceptable.

> ... Later autoconf versions check for
> C99 "or later", but we're stuck with the old one and I doubt we are
> going to upgrade it.

I'm not sure --- there was some discussion a week or two ago about
upgrading autoconf after all.  But whether we do or not, it's hard
to see what AC_HEADER_STDBOOL is buying us.

			regards, tom lane