15 #include <type_traits>
18 #if !defined(_LIBCPP_VERSION) && defined(__clang__)
24 struct is_constructible<std::reference_wrapper<const std::any>,
25 const std::reference_wrapper<const std::any>&>
28 struct is_constructible<std::reference_wrapper<const std::any>,
29 std::reference_wrapper<const std::any>&&>
32 struct is_constructible<std::reference_wrapper<const std::any>,
33 std::reference_wrapper<const std::any>&>
36 struct is_copy_constructible<std::reference_wrapper<const std::any>>