https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117276
--- Comment #5 from Sam James <sjames at gcc dot gnu.org> --- Jonathan already self-assigned it which indicates he's planning to work on it soon, FWIW (that doesn't happen for all libstdc++ bugs automatically). But if you're interested in trying a patch, he might be able to give you advice if you want to learn (which is welcome).