using System;

namespace dispose_fxcop_test
{
	internal class Child : IDisposable
	{
		public void Dispose()
		{
			Dispose(true);
			GC.SuppressFinalize(this);
		}

		protected virtual void Dispose(bool disposing)
		{
		}

		~Child()
		{
			Dispose(false);
		}
	}

	internal class Owner : IDisposable
	{
		private readonly Child _child;

		public Owner(Child child)
		{
			_child = child;
		}

		public void Dispose()
		{
			Dispose(true);
			GC.SuppressFinalize(this);
		}

		protected virtual void Dispose(bool disposing)
		{
			if (disposing)
			{
				_child.Dispose();
			}
		}

		~Owner()
		{
			Dispose(false);
		}
	}

	internal class Program
	{
		//todo: fix CA:2000
		private static Owner CreateOwner()
		{
			Child child = null;
			try
			{
				child = new Child();
				return new Owner(child);
			}
			catch
			{
				child?.Dispose();
				throw;
			}
		}

		private static void Main(string[] args)
		{
			using (var owner = CreateOwner())
			{
				//do something useful
			}
		}
	}
}