1bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant//===----------------------------------------------------------------------===// 2bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// 3f5256e16dfc425c1d466f6308d4026d529ce9e0bHoward Hinnant// The LLVM Compiler Infrastructure 4bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// 5b64f8b07c104c6cc986570ac8ee0ed16a9f23976Howard Hinnant// This file is dual licensed under the MIT and the University of Illinois Open 6b64f8b07c104c6cc986570ac8ee0ed16a9f23976Howard Hinnant// Source Licenses. See LICENSE.TXT for details. 7bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// 8bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant//===----------------------------------------------------------------------===// 9bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// 10bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// UNSUPPORTED: libcpp-has-no-threads 11bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 12bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// <future> 13bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 14bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// class shared_future<R> 15bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 16bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// shared_future& operator=(const shared_future& rhs); 17bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 18bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <future> 19bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <cassert> 20bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 21bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantint main() 22bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant{ 23bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 24bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 25bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant typedef int T; 26bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::promise<T> p; 27bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::shared_future<T> f0 = p.get_future(); 28bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::shared_future<T> f; 29bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant f = f0; 30bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f0.valid()); 31bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.valid()); 32bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant } 33bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 34bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant typedef int T; 35bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::shared_future<T> f0; 36bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::shared_future<T> f; 37bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant f = f0; 38bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(!f0.valid()); 39bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(!f.valid()); 40bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant } 41bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 42bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant typedef int& T; 43bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::promise<T> p; 44 std::shared_future<T> f0 = p.get_future(); 45 std::shared_future<T> f; 46 f = f0; 47 assert(f0.valid()); 48 assert(f.valid()); 49 } 50 { 51 typedef int& T; 52 std::shared_future<T> f0; 53 std::shared_future<T> f; 54 f = f0; 55 assert(!f0.valid()); 56 assert(!f.valid()); 57 } 58 { 59 typedef void T; 60 std::promise<T> p; 61 std::shared_future<T> f0 = p.get_future(); 62 std::shared_future<T> f; 63 f = f0; 64 assert(f0.valid()); 65 assert(f.valid()); 66 } 67 { 68 typedef void T; 69 std::shared_future<T> f0; 70 std::shared_future<T> f; 71 f = f0; 72 assert(!f0.valid()); 73 assert(!f.valid()); 74 } 75#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 76} 77