On Mon, 22 May 2023, 00:40 peter0x44 via Gcc, <gcc@gcc.gnu.org> wrote:

>
> I would be happy to open a PR to improve this warning, if there isn't
> one already.
>

Please do.


>
> It seems it might even be trivial enough for me to investigate and
> tackle myself, in some spare time.
>
> I see very little code using either of these features, so it's
> definitely not a high priority task regardless.
>

Glibc uses the nonnull attribute in many places. Libstdc++ uses it in a few
places.