https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101588
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|rejects valid constexpr |[DR2126] rejects valid |when binding from a |constexpr when binding from |constexpr function and |a constexpr function and |initializer_list |initializer_list Alias| |DR2126 --- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- GCC implements DR2126 mostly except when the type is intialized like: T{42} .