On Fri, 8 Jul 2022 at 18:41, Marek Polacek wrote: > The patch also adds the relevant class and variable templates to > <type_traits>.
+ template<typename _Tp, typename _Up> + struct reference_constructs_from_temp orary + : public __bool_constant<__reference_constructs_from_temporary(_Tp, _Up)> This can use bool_constant, as that was added in C++17. __bool_constant is the internal equivalent for pre-C++17. The library parts are fine with that change, thanks for implementing this!
