37 lines
787 B
C++
37 lines
787 B
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 promise<R>
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// promise();
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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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std::promise<int> p;
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std::future<int> f = p.get_future();
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assert(f.valid());
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}
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{
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std::promise<int&> p;
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std::future<int&> f = p.get_future();
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assert(f.valid());
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}
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{
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std::promise<void> p;
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std::future<void> f = p.get_future();
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assert(f.valid());
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}
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}
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