Re: Defend against -ffast-math in meson builds

Bertrand Drouvot <bertranddrouvot(dot)pg(at)gmail(dot)com> writes:
> On Wed, Mar 11, 2026 at 01:48:31PM -0400, Andres Freund wrote:
>> On 2026-03-11 12:45:55 -0400, Tom Lane wrote:
>>> So no, I don't wanna support this. But maybe we should move the
>>> code-level tests out of the datetime files and into utils/float.h
>>> or some such place.

>> I think it's probably better to have it in a .c file (maybe float.c), I could
>> kinda imagine some extension intentionally enabling -ffast-math, because it
>> does something numerically intensive where the incorrectness doesn't matter.

> I think that you have a good point about the extension. That said a .h file
> could also prevent the extension to make use of -ffast-math "accidentally".

Yeah, that was my thought too. But I think Andres has a point that in
principle an extension could use -ffast-math intentionally, so I'm
content to just put the test in float.c.

regards, tom lane