Merge pull request #1981 from retronym/backport/1187

[backport] SI-3577 BoundedWildcardType handling

1 files changed, 29 insertions, 0 deletions

diff --git a/test/files/pos/t3577.scala b/test/files/pos/t3577.scala
new file mode 100644
index 0000000000..80a280f67a
--- /dev/null
+++ b/test/files/pos/t3577.scala
@@ -0,0 +1,29 @@
+case class Check[A](val value: A)
+
+case class C2(checks: Check[_]*);
+
+object C {
+  def m(x : C2): Any = (null: Any) match {
+    case C2(_, rest @ _*) => {
+      rest.map(_.value)
+    }
+  }
+}
+
+///////////////////
+
+object Container {
+  trait Exp[+T]
+  abstract class FuncExp[-S, +T]
+
+  sealed abstract class FoundNode[T, Repr] {
+    def optimize[TupleT, U, That](parentNode: FlatMap[T, Repr, U, That]): Any
+    def optimize2[TupleT, U, That](parentNode: Any): Any
+  }
+
+  class FlatMap[T, Repr, U, That]
+
+  val Seq(fn: FoundNode[t, repr]) = Seq[FoundNode[_, _]]()
+  fn.optimize(null)    // was: scala.MatchError: ? (of class BoundedWildcardType) @ Variances#varianceInType
+  fn.optimize2(null) // was: fatal error: bad type: ?(class scala.reflect.internal.Types$BoundedWildcardType) @ Pickle.putType
+}