using System;

internal class Program
{
    public static void Main()
    {
        Console.WriteLine(Nul());
    }

	public static bool Nul()
	{
		return new Func<bool>(new C().A).Method.CreateDelegate<Func<bool>>(null)();
	}

	internal class C
	{
		public bool A()
		{
			return this is null;
		}
	}
}

Unhandled Exception:
System.InvalidProgramException: Invalid IL code in (wrapper delegate-invoke) System.Func`1<bool>:invoke_callvirt_TResult (): IL_0066: ldarga.s  1


   at Program.Nul()
   at Program.Main()