| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // UNSUPPORTED: no-threads |
| |
| // LWG 2056 changed the values of future_errc, so if we're using new headers |
| // with an old library we'll get incorrect messages. |
| // |
| // XFAIL: stdlib=apple-libc++ && target={{.+}}-apple-macosx10.{{9|10|11}} |
| |
| // VC Runtime's std::exception::what() method is not marked as noexcept, so |
| // this fails. |
| // UNSUPPORTED: target=x86_64-pc-windows-msvc |
| |
| // <future> |
| // |
| // class future_error |
| // |
| // const char* what() const noexcept; |
| |
| #include <cassert> |
| #include <future> |
| #include <string_view> |
| #include <utility> |
| |
| #include "test_macros.h" |
| |
| int main(int, char**) { |
| ASSERT_NOEXCEPT(std::declval<std::future_error const&>().what()); |
| ASSERT_SAME_TYPE(decltype(std::declval<std::future_error const&>().what()), char const*); |
| |
| // Before C++17, we can't construct std::future_error directly in a standards-conforming way |
| #if TEST_STD_VER >= 17 |
| { |
| std::future_error const f(std::future_errc::broken_promise); |
| [[maybe_unused]] char const* what = f.what(); |
| LIBCPP_ASSERT(what == std::string_view{"The associated promise has been destructed prior " |
| "to the associated state becoming ready."}); |
| } |
| { |
| std::future_error f(std::future_errc::future_already_retrieved); |
| [[maybe_unused]] char const* what = f.what(); |
| LIBCPP_ASSERT(what == std::string_view{"The future has already been retrieved from " |
| "the promise or packaged_task."}); |
| } |
| { |
| std::future_error f(std::future_errc::promise_already_satisfied); |
| [[maybe_unused]] char const* what = f.what(); |
| LIBCPP_ASSERT(what == std::string_view{"The state of the promise has already been set."}); |
| } |
| { |
| std::future_error f(std::future_errc::no_state); |
| [[maybe_unused]] char const* what = f.what(); |
| LIBCPP_ASSERT(what == std::string_view{"Operation not permitted on an object without " |
| "an associated state."}); |
| } |
| #endif |
| |
| return 0; |
| } |