[Bug c++/118698] [14/15 Regression] Compiler ICE on concept code accepted by MSVC and clang

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118698

--- Comment #10 from Patrick Palka <ppalka at gcc dot gnu.org> ---
FWIW all compilers accept the code if you replace std::invocable with
std::is_invocable_v.