mcs/tests/gtest-variance-14.cs

   1 using System;
   2
   3 public class A
   4 {
   5 }
   6
   7 public class B : A
   8 {
   9 }
  10
  11 public class C : A
  12 {
  13         delegate void D<in T> (T t);
  14         delegate T D<out T, U> (U u);
  15
  16         public static int Main ()
  17         {
  18                 D<string> d_a = null;
  19                 D<object> d_b = (D<object>) d_a;
  20
  21                 D<A, string> d2_a = null;
  22                 D<B, string> d2_b = (D<B, string>) d2_a;
  23                 D<C, string> d2_c = (D<C, string>) d2_a;
  24
  25                 return 0;
  26         }
  27 }