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

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

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

--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 49654
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49654&action=edit
gcc11-pr80780.patch

Full untested patch.