mcs/tests/gtest-584.cs

   1 using System;
   2
   3 enum E : sbyte
   4 {
   5         V = 1
   6 }
   7
   8 struct S
   9 {
  10         public static bool operator == (S s, S i)
  11         {
  12                 throw new ApplicationException ();
  13         }
  14
  15         public static bool operator != (S s, S i)
  16         {
  17                 throw new ApplicationException ();
  18         }
  19
  20         public static implicit operator int? (S s)
  21         {
  22                 throw new ApplicationException ();
  23         }
  24
  25         public static implicit operator E? (S s)
  26         {
  27                 return null;
  28         }
  29 }
  30
  31 class C
  32 {
  33         public static int Main ()
  34         {
  35                 E? a = E.V;
  36                 E? a_n = null;
  37                 E? b = E.V;
  38                 E? b_n = null;
  39
  40                 if (a != b)
  41                         return 1;
  42
  43                 if (a == a_n)
  44                         return 2;
  45
  46                 if (a_n != b_n)
  47                         return 3;
  48
  49                 E e = (E) 4;
  50                 S s;
  51                 if (e == s)
  52                         return 10;
  53
  54                 if (s == e)
  55                         return 11;
  56
  57                 if (e > s)
  58                         return 12;
  59
  60                 if (s > e)
  61                         return 13;
  62
  63                 if ((s & e) != null)
  64                         return 14;
  65
  66                 if ((s & e) != null)
  67                         return 15;
  68
  69                 var res1 = (E?) 1 == null;
  70                 if (res1)
  71                         return 16;
  72
  73                 var res2 = null == (E?) 1;
  74                 if (res2)
  75                         return 17;
  76
  77                 var r1 = a_n & E.V;
  78                 if (r1 != null)
  79                         return 18;
  80
  81                 var r2 = E.V & a_n;
  82                 if (r2 != null)
  83                         return 19;
  84
  85                 Console.WriteLine ("ok");
  86
  87                 return 0;
  88         }
  89 }