//===----------------------------------------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

// UNSUPPORTED: c++98, c++03, c++11, c++14

// template <class T> constexpr add_const<T>& as_const(T& t) noexcept;      // C++17
// template <class T>           add_const<T>& as_const(const T&&) = delete; // C++17

#include <utility>

struct S {int i;};

int main()
{
    std::as_const(S{});
}