45 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8//9// UNSUPPORTED: no-threads10// UNSUPPORTED: c++03, c++11, c++1411 12// <future>13 14// class future_error15//16// explicit future_error(future_errc e); // since C++1717 18#include <cassert>19#include <future>20#include <type_traits>21 22int main(int, char**) {23 {24 std::future_error f(std::future_errc::broken_promise);25 assert(f.code() == std::make_error_code(std::future_errc::broken_promise));26 }27 {28 std::future_error f(std::future_errc::future_already_retrieved);29 assert(f.code() == std::make_error_code(std::future_errc::future_already_retrieved));30 }31 {32 std::future_error f(std::future_errc::promise_already_satisfied);33 assert(f.code() == std::make_error_code(std::future_errc::promise_already_satisfied));34 }35 {36 std::future_error f(std::future_errc::no_state);37 assert(f.code() == std::make_error_code(std::future_errc::no_state));38 }39 40 // Make sure the constructor is explicit41 static_assert(!std::is_convertible_v<std::future_errc, std::future_error>);42 43 return 0;44}45