mcs/tests/test-585.cs

   1 interface IA
   2 {
   3 }
   4
   5 interface IB
   6 {
   7 }
   8
   9 class A
  10 {
  11 }
  12
  13 class B
  14 {
  15 }
  16
  17 class X : IA
  18 {
  19 }
  20
  21 class Program
  22 {
  23         public static void Main ()
  24         {
  25                 IA a = null;
  26                 IB b = null;
  27                 bool r = a == b;
  28
  29                 A aa = null;
  30                 B bb = null;
  31                 // Only this fails
  32                 //r = aa == bb;
  33
  34                 X x = null;
  35                 r = x == a;
  36                 r = x == b;
  37
  38                 object o = null;
  39                 r = o == x;
  40                 r = o == a;
  41                 r = o == aa;
  42         }
  43 }
  44