blob: 560d5416c17b3c6454208eae90177b754f8822f3 (
plain) (
tree)
|
|
// scalac fails for test2/3
// dotc fails for all three
object test1 {
class Tree[-T >: Null]
def f(x: Any): Tree[Null] = x match {
case y: Tree[_] => y
}
}
object test2 {
class Tree[T >: Null]
def f(x: Any): Tree[Null] = x match {
case y: Tree[_] => y
}
}
object test3 {
class Tree[+T >: Null]
def f(x: Any): Tree[Null] = x match {
case y: Tree[_] => y
}
}
|