1.1 --- a/algs4-c++/src/Queue.cpp	Tue Jun 23 12:28:03 2015 -0500
     1.2 +++ b/algs4-c++/src/Queue.cpp	Tue Jun 23 14:52:17 2015 -0500
     1.3 @@ -25,6 +25,13 @@
     1.4          std::cout << *iter << std::endl;
     1.5          }
     1.6  
     1.7 +    Queue<long> q2( queue );
     1.8 +    std::cout << "Copied queue to q2.  q2 has " << q2.size() << " entries." << std::endl;
     1.9 +    for ( auto iter = q2.begin(); iter != q2.end(); ++iter ) {
    1.10 +        std::cout << *iter << std::endl;
    1.11 +        }
    1.12 +
    1.13 +
    1.14      std::cout << "Dequeuing entries..." << std::endl;
    1.15  
    1.16      while ( ! queue.is_empty() ) {
    1.17 @@ -34,5 +41,9 @@
    1.18  
    1.19      std::cout << "Queue has " << queue.size() << " entries." << std::endl;
    1.20  
    1.21 +
    1.22 +    // Silently empty q2 to avoid the assertion in the destructor.
    1.23 +    while ( ! q2.is_empty() )
    1.24 +        q2.dequeue();
    1.25      }
    1.26