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Diffstat (limited to 'test/files/pos/ticket2251.scala')
| -rw-r--r-- | test/files/pos/ticket2251.scala | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/test/files/pos/ticket2251.scala b/test/files/pos/ticket2251.scala index b3afee4ea9..c220e85350 100644 --- a/test/files/pos/ticket2251.scala +++ b/test/files/pos/ticket2251.scala @@ -22,4 +22,18 @@ lub of List(D, C) is B[_2] forSome { type _2 >: D with C{} <: B[_1] forSome { ty // should be: B[X] forSome {type X <: B[X]} -- can this be done automatically? for now, just detect f-bounded polymorphism and fall back to more coarse approximation val data: List[A] = List(new C, new D) + + val data2 = List(new C, new D) + + val data3: List[B[X] forSome { type X <: B[_ <: A] }] = List(new C, new D) + + // Not yet -- + // val data4: List[B[X] forSome { type X <: B[X] }] = List(new C, new D) + // <console>:7: error: type mismatch; + // found : List[B[_ >: D with C <: B[_ >: D with C <: A]]] + // required: List[B[X] forSome { type X <: B[X] }] + // val data4: List[B[X] forSome { type X <: B[X] }] = List(new C, new D) + + // works + val data5 = List[B[X] forSome { type X <: B[X] }](new C, new D) } |