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class Top[A] {
type AType = A
}
trait Node { outer =>
type T <: Node
def prepend = new Node { type T = outer.type }
}
class Main[NextType <: Node](value: Node { type T = NextType })
extends Top[Node { type T = NextType }] {
new Main[AType]( (value: AType).prepend )
}
/* this used to be a neg test, even though it should've compiled
SI-8177 fixed this.
Behold the equivalent program which type checks without the fix for SI-8177.
(Expand type alias, convert type member to type param;
note the covariance to encode subtyping on type members.)
class Node[+T <: Node[_]] { def prepend = new Node[this.type] }
class Main[NextType <: Node[_]](value: Node[NextType]) {
new Main(value.prepend)
}
*/
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