79 lines · cpp
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-exception6//7//===----------------------------------------------------------------------===//8//9// UNSUPPORTED: no-threads10// UNSUPPORTED: c++0311 12// <future>13 14// class shared_future<R>15 16// shared_future& operator=(shared_future&& rhs);17 18#include <future>19#include <cassert>20 21#include "test_macros.h"22 23int main(int, char**)24{25 {26 typedef int T;27 std::promise<T> p;28 std::shared_future<T> f0 = p.get_future();29 std::shared_future<T> f;30 f = std::move(f0);31 assert(!f0.valid());32 assert(f.valid());33 }34 {35 typedef int T;36 std::shared_future<T> f0;37 std::shared_future<T> f;38 f = std::move(f0);39 assert(!f0.valid());40 assert(!f.valid());41 }42 {43 typedef int& T;44 std::promise<T> p;45 std::shared_future<T> f0 = p.get_future();46 std::shared_future<T> f;47 f = std::move(f0);48 assert(!f0.valid());49 assert(f.valid());50 }51 {52 typedef int& T;53 std::shared_future<T> f0;54 std::shared_future<T> f;55 f = std::move(f0);56 assert(!f0.valid());57 assert(!f.valid());58 }59 {60 typedef void T;61 std::promise<T> p;62 std::shared_future<T> f0 = p.get_future();63 std::shared_future<T> f;64 f = std::move(f0);65 assert(!f0.valid());66 assert(f.valid());67 }68 {69 typedef void T;70 std::shared_future<T> f0;71 std::shared_future<T> f;72 f = std::move(f0);73 assert(!f0.valid());74 assert(!f.valid());75 }76 77 return 0;78}79