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

On Mon, Nov 18, 2024 at 11:50 AM Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Thomas Munro <thomas(dot)munro(at)gmail(dot)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.

I think this is the minimal change, which I'd push back to 13 post-freeze.

I found a few lines we could just delete in master. I wonder if we
should also just require sizeof(bool) == 1 more explicitly going
forward with an error, since we don't have coverage or any expectation
of ever getting any for the alternative code AFAICS, even if it is
small.