mcs/errors/cs4011-4.cs

   1 // CS4011: The awaiter type `A' must have suitable IsCompleted and GetResult members
   2 // Line: 16
   3
   4 static class S
   5 {
   6         public static A GetAwaiter (this int i)
   7         {
   8                 return new A ();
   9         }
  10 }
  11
  12 class A
  13 {
  14         bool IsCompleted {
  15                 get {
  16                         return true;
  17                 }
  18         }
  19
  20         void OnCompleted (System.Action a)
  21         {
  22         }
  23
  24         static async void Test ()
  25         {
  26                 await 9;
  27         }
  28 }