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      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 
     13 // <thread>
     14 
     15 // class thread
     16 
     17 // ~thread();
     18 
     19 #include <thread>
     20 #include <new>
     21 #include <cstdlib>
     22 #include <cassert>
     23 
     24 class G
     25 {
     26     int alive_;
     27 public:
     28     static int n_alive;
     29     static bool op_run;
     30 
     31     G() : alive_(1) {++n_alive;}
     32     G(const G& g) : alive_(g.alive_) {++n_alive;}
     33     ~G() {alive_ = 0; --n_alive;}
     34 
     35     void operator()()
     36     {
     37         assert(alive_ == 1);
     38         assert(n_alive >= 1);
     39         op_run = true;
     40     }
     41 };
     42 
     43 int G::n_alive = 0;
     44 bool G::op_run = false;
     45 
     46 void f1()
     47 {
     48     std::_Exit(0);
     49 }
     50 
     51 int main()
     52 {
     53     std::set_terminate(f1);
     54     {
     55         assert(G::n_alive == 0);
     56         assert(!G::op_run);
     57         G g;
     58         {
     59           std::thread t(g);
     60           std::this_thread::sleep_for(std::chrono::milliseconds(250));
     61         }
     62     }
     63     assert(false);
     64 }
     65