[Bug libstdc++/122022] bind_front/bind_back/not_fn pass function parameters by value

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122022

--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
It looks like the parameters changed from forwarding references to values in
PATCHv5:
https://gcc.gnu.org/pipermail/gcc-patches/2025-July/690816.html