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 // <optional> 11 12 // class bad_optional_access is not default constructible 13 14 #include <experimental/optional> 15 #include <type_traits> 16 main()17int main() 18 { 19 #if _LIBCPP_STD_VER > 11 20 using std::experimental::bad_optional_access; 21 22 static_assert(!std::is_default_constructible<bad_optional_access>::value, ""); 23 #endif // _LIBCPP_STD_VER > 11 24 } 25