mcs/tests/test-903.cs

   1 using System;
   2
   3 struct S
   4 {
   5 }
   6
   7 class C
   8 {
   9         public static int ConversionCalled;
  10
  11         public static implicit operator S (C c)
  12         {
  13                 ++ConversionCalled;
  14                 return new S ();
  15         }
  16 }
  17
  18 class Program
  19 {
  20         static C field;
  21
  22         static int Main ()
  23         {
  24                 C c = new C ();
  25                 var x = c ?? new S ();
  26
  27                 if (C.ConversionCalled != 1)
  28                         return 1;
  29
  30                 c = null;
  31                 x = c ?? new S ();
  32                 if (C.ConversionCalled != 1)
  33                         return 2;
  34
  35                 x = field ?? new S ();
  36                 if (C.ConversionCalled != 1)
  37                         return 3;
  38
  39                 return 0;
  40         }
  41 }