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 // UNSUPPORTED: libcpp-has-no-threads 11 12 // UNSUPPORTED: c++98, c++03 13 // Libc++'s enum class emulation does not allow static_cast<Enum>(0) to work. 14 15 // <future> 16 17 // enum class future_errc 18 // { 19 // broken_promise = implementation-defined, 20 // future_already_retrieved = implementation-defined, 21 // promise_already_satisfied = implementation-defined, 22 // no_state = implementation-defined 23 // }; 24 25 #include <future> 26 27 int main() 28 { 29 static_assert(std::future_errc::broken_promise != std::future_errc::future_already_retrieved, ""); 30 static_assert(std::future_errc::broken_promise != std::future_errc::promise_already_satisfied, ""); 31 static_assert(std::future_errc::broken_promise != std::future_errc::no_state, ""); 32 static_assert(std::future_errc::future_already_retrieved != std::future_errc::promise_already_satisfied, ""); 33 static_assert(std::future_errc::future_already_retrieved != std::future_errc::no_state, ""); 34 static_assert(std::future_errc::promise_already_satisfied != std::future_errc::no_state, ""); 35 36 static_assert(std::future_errc::broken_promise != static_cast<std::future_errc>(0), ""); 37 static_assert(std::future_errc::future_already_retrieved != static_cast<std::future_errc>(0), ""); 38 static_assert(std::future_errc::promise_already_satisfied != static_cast<std::future_errc>(0), ""); 39 static_assert(std::future_errc::no_state != static_cast<std::future_errc>(0), ""); 40 } 41
