gistfile1.txt

using System;
using System.Threading;

class Driver {
	static WeakReference wr;

	~Driver () {
		Console.WriteLine ("fin");
	}

	static void Main () {
		var t = new Thread(() => { wr = new WeakReference (new Driver ()); });
		t.Start ();
		t.Join ();
		Console.WriteLine (wr.IsAlive);
		GC.Collect ();
		Console.WriteLine (wr.IsAlive);
		GC.WaitForPendingFinalizers ();
		Console.WriteLine (wr.IsAlive);
	}
}