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// <future> 13 14// class future<R> 15 16// future& operator=(future&& rhs); 17 18#include <future> 19#include <cassert> 20 21int main() 22{ 23#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 24 { 25 typedef int T; 26 std::promise<T> p; 27 std::future<T> f0 = p.get_future(); 28 std::future<T> f; 29 f = std::move(f0); 30 assert(!f0.valid()); 31 assert(f.valid()); 32 } 33 { 34 typedef int T; 35 std::future<T> f0; 36 std::future<T> f; 37 f = std::move(f0); 38 assert(!f0.valid()); 39 assert(!f.valid()); 40 } 41 { 42 typedef int& T; 43 std::promise<T> p; 44 std::future<T> f0 = p.get_future(); 45 std::future<T> f; 46 f = std::move(f0); 47 assert(!f0.valid()); 48 assert(f.valid()); 49 } 50 { 51 typedef int& T; 52 std::future<T> f0; 53 std::future<T> f; 54 f = std::move(f0); 55 assert(!f0.valid()); 56 assert(!f.valid()); 57 } 58 { 59 typedef void T; 60 std::promise<T> p; 61 std::future<T> f0 = p.get_future(); 62 std::future<T> f; 63 f = std::move(f0); 64 assert(!f0.valid()); 65 assert(f.valid()); 66 } 67 { 68 typedef void T; 69 std::future<T> f0; 70 std::future<T> f; 71 f = std::move(f0); 72 assert(!f0.valid()); 73 assert(!f.valid()); 74 } 75#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 76} 77