llvm/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/implicit_ctad.pass.cpp

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

// UNSUPPORTED: no-threads
// UNSUPPORTED: c++03, c++11, c++14

// <mutex>

// scoped_lock

// Make sure that the implicitly-generated CTAD works.

#include <mutex>

#include "test_macros.h"

int main(int, char**) {
  std::mutex m1;
  std::recursive_mutex m2;
  std::recursive_timed_mutex m3;
  {
    std::scoped_lock lock(m1);
    ASSERT_SAME_TYPE(decltype(lock), std::scoped_lock<std::mutex>);
  }
  {
    std::scoped_lock lock(m1, m2);
    ASSERT_SAME_TYPE(decltype(lock), std::scoped_lock<std::mutex, std::recursive_mutex>);
  }
  {
    std::scoped_lock lock(m1, m2, m3);
    ASSERT_SAME_TYPE(decltype(lock), std::scoped_lock<std::mutex, std::recursive_mutex, std::recursive_timed_mutex>);
  }

  return 0;
}