forked from OSchip/llvm-project
75 lines
1.8 KiB
C++
75 lines
1.8 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// UNSUPPORTED: libcpp-has-no-threads
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// UNSUPPORTED: c++98, c++03
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// <future>
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// class shared_future<R>
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// shared_future& operator=(shared_future&& rhs);
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#include <future>
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#include <cassert>
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int main()
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{
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{
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typedef int T;
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std::promise<T> p;
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std::shared_future<T> f0 = p.get_future();
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std::shared_future<T> f;
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f = std::move(f0);
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assert(!f0.valid());
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assert(f.valid());
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}
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{
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typedef int T;
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std::shared_future<T> f0;
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std::shared_future<T> f;
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f = std::move(f0);
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assert(!f0.valid());
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assert(!f.valid());
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}
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{
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typedef int& T;
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std::promise<T> p;
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std::shared_future<T> f0 = p.get_future();
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std::shared_future<T> f;
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f = std::move(f0);
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assert(!f0.valid());
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assert(f.valid());
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}
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{
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typedef int& T;
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std::shared_future<T> f0;
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std::shared_future<T> f;
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f = std::move(f0);
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assert(!f0.valid());
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assert(!f.valid());
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}
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{
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typedef void T;
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std::promise<T> p;
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std::shared_future<T> f0 = p.get_future();
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std::shared_future<T> f;
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f = std::move(f0);
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assert(!f0.valid());
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assert(f.valid());
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}
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{
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typedef void T;
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std::shared_future<T> f0;
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std::shared_future<T> f;
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f = std::move(f0);
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assert(!f0.valid());
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assert(!f.valid());
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}
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}
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