using System;

​

public struct Foo

{

    public int foo;

}

public class Program

{

    public static void Main()

    {

        var foo = new Foo { foo = 42 };

        int result = AliasedWrite(ref foo, ref foo.foo);

        Console.WriteLine("Result: {0}", result);

    }

    public static int AliasedWrite(ref Foo foo, ref int i)

    {

        foo.foo = 13;

        return i;

    }

}