https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89244
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jakub at gcc dot gnu.org --- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Why should it? We don't want people to use it directly, they should use std::is_constant_evaluated () which is documented. We don't document most the C++ magic builtins either (__is_*, __has_*, __builtin_launder), people shouldn't use those directly, they are private APIs between libstdc++ and the compiler.