| //===----------------------------------------------------------------------===// |
| // |
| // 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. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <optional> |
| |
| // class bad_optional_access; |
| // bad_optional_access(const bad_optional_access&); |
| |
| #include <experimental/optional> |
| #include <string> |
| #include <cstring> |
| #include <type_traits> |
| #include <cassert> |
| |
| int main() |
| { |
| #if _LIBCPP_STD_VER > 11 |
| using std::experimental::bad_optional_access; |
| |
| static_assert(std::is_nothrow_copy_constructible<bad_optional_access>::value, ""); |
| const std::string s("another message"); |
| bad_optional_access e1(s); |
| bad_optional_access e2 = e1; |
| assert(std::strcmp(e1.what(), e2.what()) == 0); |
| #endif // _LIBCPP_STD_VER > 11 |
| } |