mcs/tests/gtest-616.cs

   1 using System;
   2
   3 struct S : IDisposable
   4 {
   5         public void Dispose ()
   6         {
   7         }
   8 }
   9
  10 class A<T> where T : IDisposable
  11 {
  12         public virtual bool Test<U> (U u) where U : T
  13         {
  14                 using (u) {
  15                         return false;
  16                 }
  17         }
  18 }
  19
  20 class B : A<S>
  21 {
  22         public override bool Test<U> (U u)
  23         {
  24                 using (u) {
  25                         return true;
  26                 }
  27         }
  28
  29         public static int Main ()
  30         {
  31                 var b = new B ();
  32                 if (!b.Test (new S ()))
  33                         return 1;
  34
  35                 return 0;
  36         }
  37 }