1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // UNSUPPORTED: no-threads, c++03 10 11 // <future> 12 13 // class future<R> 14 15 // future& operator=(future&& rhs); 16 17 #include <future> 18 #include <cassert> 19 20 #include "test_macros.h" 21 main(int,char **)22int main(int, char**) 23 { 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 76 return 0; 77 } 78