Re: small cleanup for s_lock.h

On Mon May 4, 2026 at 4:50 PM CDT, Nathan Bossart wrote:
> I noticed that s_lock.h points to a default implementation of tas() in
> tas.s or s_lock.c, but AFAICT there hasn't been a tas() implementation in
> s_lock.c since commit 718aa43a4e, and commit 25f36066dd seems to have
> removed the last remaining tas.s files. So, I think this is dead code.
>
> I also noticed that HAS_TEST_AND_SET just means that TAS is defined, so I
> wrote a 0002 that removes it in favor of checking TAS directly. I'd like
> to rewrite the comment at the top of the file, too, but haven't gotten to
> that yet. I find it a little misleading, especially because we #error if
> TAS isn't defined.

This looks pretty reasonable to me.

--
Tristan Partin
PostgreSQL Contributors Team
AWS (https://aws.amazon.com)