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//===----------------------------------------------------------------------===//
//
// 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.
//
//===----------------------------------------------------------------------===//
// <utility>
// template <class T> typename add_rvalue_reference<T>::type declval() noexcept;
#include <utility>
#include <type_traits>
class A
{
A(const A&);
A& operator=(const A&);
};
int main()
{
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
static_assert((std::is_same<decltype(std::declval<A>()), A&&>::value), "");
#else
static_assert((std::is_same<decltype(std::declval<A>()), A>::value), "");
#endif
}
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