https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126252
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Indeed, the libc headers declare it in namespace std instead.
jakub at gcc dot gnu.org via Gcc-bugs Tue, 14 Jul 2026 02:27:41 -0700
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126252
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Indeed, the libc headers declare it in namespace std instead.