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: c++98, c++03 11 // UNSUPPORTED: libcpp-has-no-threads, libcpp-no-exceptions 12 13 // <future> 14 15 // class promise<R> 16 17 // void promise::set_value(R&& r); 18 19 #include <future> 20 #include <memory> 21 #include <cassert> 22 23 struct A 24 { AA25 A() {} 26 A(const A&) = delete; AA27 A(A&&) {throw 9;} 28 }; 29 main()30int main() 31 { 32 { 33 typedef std::unique_ptr<int> T; 34 T i(new int(3)); 35 std::promise<T> p; 36 std::future<T> f = p.get_future(); 37 p.set_value(std::move(i)); 38 assert(*f.get() == 3); 39 try 40 { 41 p.set_value(std::move(i)); 42 assert(false); 43 } 44 catch (const std::future_error& e) 45 { 46 assert(e.code() == make_error_code(std::future_errc::promise_already_satisfied)); 47 } 48 } 49 { 50 typedef A T; 51 T i; 52 std::promise<T> p; 53 std::future<T> f = p.get_future(); 54 try 55 { 56 p.set_value(std::move(i)); 57 assert(false); 58 } 59 catch (int j) 60 { 61 assert(j == 9); 62 } 63 } 64 } 65