using System;
using System.Reflection;
using System.Runtime.CompilerServices;
using System.Threading;

class Stuff<T>
{}

public class Foo
{
    public static void Throw<TException, UException>() 
        where TException : UException, new()
        where UException : TException
    {
        try
        {
            throw new TException();
        }
        catch(System.Object ex)
        {
            Equals(null, null);
        }
        catch(UException tex)
        {
            
        }
    }
}

class  Program
{
    static void Main()
    {
        Foo.Throw<Exception, Exception>();
    }
}