14 #include <type_traits>
17 #if !defined(_LIBCPP_VERSION) && defined(__clang__)
23 struct is_constructible<std::reference_wrapper<const std::any>,
24 const std::reference_wrapper<const std::any>&>
27 struct is_constructible<std::reference_wrapper<const std::any>,
28 std::reference_wrapper<const std::any>&>