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 
21 class G
22 {
23     int alive_;
24 public:
25     static int n_alive;
26     static bool op_run;
27 
G()28     G() : alive_(1) {++n_alive;}
G(const G & g)29     G(const G& g) : alive_(g.alive_) {++n_alive;}
~G()30     ~G() {alive_ = 0; --n_alive;}
31 
operator ()(int i,double j)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 
42 int G::n_alive = 0;
43 bool G::op_run = false;
44 
main()45 int 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