[Bug c++/57466] [DR 1584] Argument deduction fails for 'const T*' when T is function type

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57466

--- Comment #20 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The core issue is still open, for some reason.