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// <thread>
13
14// class thread
15
16// thread& operator=(thread&& t);
17
18#include <thread>
19#include <cassert>
20
21class G
22{
23    int alive_;
24public:
25    static int n_alive;
26    static bool op_run;
27
28    G() : alive_(1) {++n_alive;}
29    G(const G& g) : alive_(g.alive_) {++n_alive;}
30    ~G() {alive_ = 0; --n_alive;}
31
32    void operator()(int i, double j)
33    {
34        assert(alive_ == 1);
35        assert(n_alive >= 1);
36        assert(i == 5);
37        assert(j == 5.5);
38        op_run = true;
39    }
40};
41
42int G::n_alive = 0;
43bool G::op_run = false;
44
45int main()
46{
47#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
48    {
49        assert(G::n_alive == 0);
50        assert(!G::op_run);
51        {
52        G g;
53        std::thread t0(g, 5, 5.5);
54        std::thread::id id = t0.get_id();
55        std::thread t1;
56        t1 = std::move(t0);
57        assert(t1.get_id() == id);
58        assert(t0.get_id() == std::thread::id());
59        t1.join();
60        }
61        assert(G::n_alive == 0);
62        assert(G::op_run);
63    }
64#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
65}
66