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// <future>
11
12// class packaged_task<R(ArgTypes...)>
13
14// ~packaged_task();
15
16#include <future>
17#include <cassert>
18
19class A
20{
21    long data_;
22
23public:
24    explicit A(long i) : data_(i) {}
25
26    long operator()(long i, long j) const {return data_ + i + j;}
27};
28
29void func(std::packaged_task<double(int, char)> p)
30{
31}
32
33void func2(std::packaged_task<double(int, char)> p)
34{
35    p(3, 'a');
36}
37
38int main()
39{
40    {
41        std::packaged_task<double(int, char)> p(A(5));
42        std::future<double> f = p.get_future();
43        std::thread(func, std::move(p)).detach();
44        try
45        {
46            double i = f.get();
47            assert(false);
48        }
49        catch (const std::future_error& e)
50        {
51            assert(e.code() == make_error_code(std::future_errc::broken_promise));
52        }
53    }
54    {
55        std::packaged_task<double(int, char)> p(A(5));
56        std::future<double> f = p.get_future();
57        std::thread(func2, std::move(p)).detach();
58        assert(f.get() == 105.0);
59    }
60}
61