1 //===----------------------------------------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // UNSUPPORTED: libcpp-has-no-threads
11 
12 // <future>
13 
14 // class packaged_task<R(ArgTypes...)>
15 
16 // packaged_task(packaged_task&& other);
17 
18 #include <future>
19 #include <cassert>
20 
21 class A
22 {
23     long data_;
24 
25 public:
A(long i)26     explicit A(long i) : data_(i) {}
27 
operator ()(long i,long j) const28     long operator()(long i, long j) const {return data_ + i + j;}
29 };
30 
main()31 int main()
32 {
33     {
34         std::packaged_task<double(int, char)> p0(A(5));
35         std::packaged_task<double(int, char)> p = std::move(p0);
36         assert(!p0.valid());
37         assert(p.valid());
38         std::future<double> f = p.get_future();
39         p(3, 'a');
40         assert(f.get() == 105.0);
41     }
42     {
43         std::packaged_task<double(int, char)> p0;
44         std::packaged_task<double(int, char)> p = std::move(p0);
45         assert(!p0.valid());
46         assert(!p.valid());
47     }
48 }
49