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 // <future> 11 12 // class promise<R> 13 14 // void promise::set_value(R&& r); 15 16 #include <future> 17 #include <memory> 18 #include <cassert> 19 20 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 21 22 struct A 23 { 24 A() {} 25 A(const A&) = delete; 26 A(A&&) {throw 9;} 27 }; 28 29 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 30 31 int main() 32 { 33 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 34 { 35 typedef std::unique_ptr<int> T; 36 T i(new int(3)); 37 std::promise<T> p; 38 std::future<T> f = p.get_future(); 39 p.set_value(std::move(i)); 40 assert(*f.get() == 3); 41 try 42 { 43 p.set_value(std::move(i)); 44 assert(false); 45 } 46 catch (const std::future_error& e) 47 { 48 assert(e.code() == make_error_code(std::future_errc::promise_already_satisfied)); 49 } 50 } 51 { 52 typedef A T; 53 T i; 54 std::promise<T> p; 55 std::future<T> f = p.get_future(); 56 try 57 { 58 p.set_value(std::move(i)); 59 assert(false); 60 } 61 catch (int j) 62 { 63 assert(j == 9); 64 } 65 } 66 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 67 } 68
