[Bug libstdc++/111568] std::not_fn can accept non-movable function

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111568

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
           Keywords|                            |c++23
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2025-09-18

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to 康桓瑋 from comment #1)
>   auto nf = std::bind_front(f); // should be static_assert?

Mandates: only requires a diagnostic, it doesn't have to be a static_assert.