https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91010
Arseny Solokha <asolokha at gmx dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED Known to work| |10.1.0 --- Comment #5 from Arseny Solokha <asolokha at gmx dot com> --- g++ 9 emits "sorry, unimplemented", so obviously there's no backport pending.