https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125076
--- Comment #2 from Drea Pinski <pinskia at gcc dot gnu.org> --- libstdc++ implements is_constructible via the builtin __is_constructible.
pinskia at gcc dot gnu.org via Gcc-bugs Tue, 28 Apr 2026 21:59:40 -0700
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125076
--- Comment #2 from Drea Pinski <pinskia at gcc dot gnu.org> --- libstdc++ implements is_constructible via the builtin __is_constructible.