https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109850
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> --- And yes it is a dup: void LocalStorage::recompress .... { .... [&](const auto& l1_index, const auto& l1_progress_receiver) { .... [&](const auto& l2_index, const auto& l2_progress_receiver) { ....[] { struct ... FMT_COMPILE_STRING