11 static void Test (object s, EventArgs a)
15 public static int Main ()
18 string b = null ?? "a";
26 string p = default (string) ?? "a";
30 string p2 = "x" ?? "a";
35 string result = arg as string ?? "";
38 int? r = nint ?? null;
40 EventHandler h = new EventHandler (Test) ?? Test;