1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // <utility> 11 12 // template <class T> typename add_rvalue_reference<T>::type declval() noexcept; 13 14 #include <utility> 15 #include <type_traits> 16 17 #include "test_macros.h" 18 19 class A 20 { 21 A(const A&); 22 A& operator=(const A&); 23 }; 24 25 int main() 26 { 27 #if TEST_STD_VER >= 11 28 static_assert((std::is_same<decltype(std::declval<A>()), A&&>::value), ""); 29 #else 30 static_assert((std::is_same<decltype(std::declval<A>()), A&>::value), ""); 31 #endif 32 } 33
