+++ /dev/null
-using System;
-
-class Foo<T>
-{
- public T Test<U> (U u)
- where U : T
- {
- return u;
- }
-}
-
-class X
-{
- static void Main ()
- {
- Foo<X> foo = new Foo<X> ();
-
- Y y = new Y ();
- X x = foo.Test<Y> (y);
- }
-}
-
-class Y : X
-{
-}