67 lines
1.5 KiB
C++
67 lines
1.5 KiB
C++
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//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <future>
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// class future<R>
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// future(const future&) = delete;
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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::future<T> f0 = p.get_future();
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std::future<T> f = 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::future<T> f0;
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std::future<T> f = 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::future<T> f0 = p.get_future();
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std::future<T> f = 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::future<T> f0;
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std::future<T> 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::future<T> f0 = p.get_future();
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std::future<T> f = 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::future<T> f0;
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std::future<T> f = 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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