1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // UNSUPPORTED: libcpp-has-no-threads
10 
11 
12 // <thread>
13 
14 // class thread
15 
16 // ~thread();
17 
18 #include <thread>
19 #include <new>
20 #include <cstdlib>
21 #include <cassert>
22 
23 #include "test_macros.h"
24 
25 class G
26 {
27     int alive_;
28 public:
29     static int n_alive;
30     static bool op_run;
31 
32     G() : alive_(1) {++n_alive;}
33     G(const G& g) : alive_(g.alive_) {++n_alive;}
34     ~G() {alive_ = 0; --n_alive;}
35 
36     void operator()()
37     {
38         assert(alive_ == 1);
39         assert(n_alive >= 1);
40         op_run = true;
41     }
42 };
43 
44 int G::n_alive = 0;
45 bool G::op_run = false;
46 
47 void f1()
48 {
49     std::_Exit(0);
50 }
51 
52 int main(int, char**)
53 {
54     std::set_terminate(f1);
55     {
56         assert(G::n_alive == 0);
57         assert(!G::op_run);
58         G g;
59         {
60           std::thread t(g);
61           std::this_thread::sleep_for(std::chrono::milliseconds(250));
62         }
63     }
64     assert(false);
65 
66   return 0;
67 }
68