mcs/tests/test-78.cs

   1 //
   2 // This test exhibits an old bug where we did not
   3 // go into the underlying type for an enumeration, and
   4 // hence implicit and explicit casts were not working when
   5 // they were going from a type to an enum
   6 //
   7
   8 namespace N1
   9 {
  10         public enum A
  11         {
  12                 A_1, A_2, A_3
  13         }
  14
  15         public class B
  16         {
  17                 static bool ShortCasting ()
  18                 {
  19                         short i = 0;
  20                         N1.A a = N1.A.A_1;
  21
  22                         i = (short) a;  //<- crash
  23                         a = (N1.A)i;//<- used to fail, can't convert
  24
  25                         if (a != N1.A.A_1)
  26                                 return false;
  27                         return true;
  28                 }
  29
  30                 static bool IntCasting ()
  31                 {
  32                         int i = 0;
  33                         N1.A a = N1.A.A_1;
  34
  35                         i = (int) a;//<- works fine
  36                         a = (N1.A)i;//<- used to fail, can't convert
  37
  38                         if (a != N1.A.A_1)
  39                                 return false;
  40                         return true;
  41                 }
  42
  43                 public static int Main ()
  44                 {
  45                         if (!IntCasting ())
  46                                 return 1;
  47                         if (!ShortCasting ())
  48                                 return 2;
  49                         return 0;
  50                 }
  51
  52         }
  53 }
  54
  55
  56
  57
  58
  59