问在引发'std::system_error‘what()的实例后调用c++ terminate :联接线程时避免了资源死锁

EN

struct TestSignal{
  static TestSignal& GetInstance(){
    static TestSignal t;
    return t;
  }
  void Start(){
    t = std::thread([this](){
        // cause a SIGSEGV
        std::cout << *(int *) 0;
    });
  }
  void Stop(){
    if (t.joinable()){
    std::cout << "true" << std::endl;
    }
    t.join();
  }
  std::thread t;
};


void HandleSignal(int signum){
  std::cout << "exit" << std::endl;
  TestSignal::GetInstance().Stop();
  exit(signum);
}

int main() {
  TestSignal::GetInstance().Start();
  signal(SIGINT, HandleSignal);
  signal(SIGSEGV, HandleSignal);

  pause();
}