[Bug c++/80780] Front-end support needed for experimental::source_location

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80780

--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Oh great, thanks :-)

I might push my implementation of std::source_location, with some tests
commented out for now.