https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66034
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |WONTFIX Status|UNCONFIRMED |RESOLVED --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- C++20 adds coroutines which like fibers and already contains local storage state. https://en.cppreference.com/w/cpp/language/coroutines So this is a won't fix.