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 27int 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