Ye olde NRE from a ctor call

nasties.cs

using System;
using System.Runtime.Remoting.Proxies;
internal class Program
{
    private static void Main(string[] args)
    {
        var c = new CrazyObject();
        Console.WriteLine(c.Hello());
        Console.ReadLine();
    }
}

[Silly]
public class CrazyObject : ContextBoundObject
{
    public string Hello() => "Hello Back";
}

public class SillyAttribute : ProxyAttribute
{
    public override MarshalByRefObject CreateInstance(Type serverType) => null;
}

With many thanks to

• https://ayende.com/blog/4307/can-you-hack-this-out-hint-1
• https://stackoverflow.com/questions/194484/whats-the-strangest-corner-case-youve-seen-in-c-sharp-or-net/194671#194671