mcs/tests/gtest-610.cs

   1 using System;
   2
   3 class G1<T1, T2>
   4         where T1 : B
   5         where T2 : T1
   6 {
   7         public static T2 Test1 (B b)
   8         {
   9                 return (T2)b;
  10         }
  11
  12         public static T2 Test2 (A a)
  13         {
  14                 return (T2)a;
  15         }
  16
  17         public static T2 Test3 (dynamic a)
  18         {
  19                 return (T2)a;
  20         }
  21 }
  22
  23 class B : A
  24 {
  25 }
  26
  27 class A
  28 {
  29         static void Main ()
  30         {
  31                 G1<B, B>.Test1 (new B ());
  32                 G1<B, B>.Test2 (new B ());
  33                 G1<B, B>.Test3 (null);
  34         }
  35 }