forked from OSchip/llvm-project
75 lines
1.7 KiB
C++
75 lines
1.7 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <future>
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// class shared_future<R>
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// shared_future& operator=(const 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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#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
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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 = 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 = 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 = 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 = 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 = 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 = f0;
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assert(!f0.valid());
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assert(!f.valid());
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}
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#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
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}
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