https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119645
Thomas Schwinge <tschwinge at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- See Also| |https://gcc.gnu.org/bugzill | |a/show_bug.cgi?id=70560 --- Comment #1 from Thomas Schwinge <tschwinge at gcc dot gnu.org> --- I shall soon post "GCN, nvptx libstdc++: Force use of '__atomic' builtins [PR119645]" -- which just hard-codes this, but doesn't resolve the (presumed) underlying issue. I've also re-discovered my own PR70560 "Review configure checks for _GLIBCXX_ATOMIC_BUILTINS and atomicity_dir" (for x86_64), from almost a decade ago. ;-)