mcs/errors/cs0019-56.cs

   1 // CS0019: Operator `+' cannot be applied to operands of type `Program' and `Program'
   2 // Line: 8
   3
   4 public class Program
   5 {
   6         static void Main ()
   7         {
   8                 Program b = default (Program) + default (Program);
   9         }
  10 }