https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98708
--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> --- But then it will warn and not do what it was expected to do. Anyway, I've rebuilt cc1plus (on a box without new binutils) with hacking up auto-host.h so that it normally emits .file 0 "..." directive, and with -gno-as-loc-support it doesn't emit it. Will try it soon in a koji build where it failed.