# V3222. Potential resource leak. An inner IDisposable object might remain non-disposed if the constructor of the outer object throws an exception.

The analyzer has detected a potential resource leak. If creating an object causes an exception, the inner object already created may not be properly released.

The example:

    public void EditFile(string f)
    {
      using (BufferedStream os = new BufferedStream(new FileStream(f,
                                                    FileMode.Open)))
      {
        ....
      }
    }

In this case, an object of the `FileStream` class may be created successfully, but an exception is thrown when creating an object of the `BufferedStrem` class. As a result, the `Dispose` method is not be called, and the file descriptor is not released.

To secure the code, consider the following approach:

    public void EditFile(string f)
    {
      using (FileStream fileStream = new FileStream(f, FileMode.Open))
      {
        using (BufferedStream os = new BufferedStream(fileStream))
        {
          ....
        }
      }

    }

In this implementation, the `using` statement creates an object of the `FileStream` class in advance, ensuring it is properly released and preventing the resource leak.

This diagnostic is classified as:

CWE-772