text: //===----------------------------------------------------------------------===//
  //
  // 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
  //
  //===----------------------------------------------------------------------===//
  
  // <queue>
  
  // reference front();
  
  #include <queue>
  #include <cassert>
  
  #include "test_macros.h"
  
  int main(int, char**)
  {
      std::queue<int> q;
      assert(q.size() == 0);
      q.push(1);
      q.push(2);
      q.push(3);
      int& ir = q.front();
      assert(ir == 1);
  
    return 0;
  }
  