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-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // UNSUPPORTED: no-threads 10 11 // UNSUPPORTED: c++03 12 // Libc++'s enum class emulation does not allow static_cast<Enum>(0) to work. 13 14 // <future> 15 16 // enum class future_errc 17 // { 18 // broken_promise = implementation-defined, 19 // future_already_retrieved = implementation-defined, 20 // promise_already_satisfied = implementation-defined, 21 // no_state = implementation-defined 22 // }; 23 24 #include <future> 25 26 #include "test_macros.h" 27 28 int main(int, char**) 29 { 30 static_assert(std::future_errc::broken_promise != std::future_errc::future_already_retrieved, ""); 31 static_assert(std::future_errc::broken_promise != std::future_errc::promise_already_satisfied, ""); 32 static_assert(std::future_errc::broken_promise != std::future_errc::no_state, ""); 33 static_assert(std::future_errc::future_already_retrieved != std::future_errc::promise_already_satisfied, ""); 34 static_assert(std::future_errc::future_already_retrieved != std::future_errc::no_state, ""); 35 static_assert(std::future_errc::promise_already_satisfied != std::future_errc::no_state, ""); 36 37 static_assert(std::future_errc::broken_promise != static_cast<std::future_errc>(0), ""); 38 static_assert(std::future_errc::future_already_retrieved != static_cast<std::future_errc>(0), ""); 39 static_assert(std::future_errc::promise_already_satisfied != static_cast<std::future_errc>(0), ""); 40 static_assert(std::future_errc::no_state != static_cast<std::future_errc>(0), ""); 41 42 return 0; 43 } 44