add tests from scala/test/files/{pos,neg}

with explicit Unit return type

1 files changed, 12 insertions, 0 deletions

diff --git a/tests/untried/neg/gadts2.scala b/tests/untried/neg/gadts2.scala
new file mode 100644
index 000000000..156944b8d
--- /dev/null
+++ b/tests/untried/neg/gadts2.scala
@@ -0,0 +1,12 @@
+trait Super[+A]
+case class Sub[B](f: B => B) extends Super[B]
+
+object Test extends App {
+  val s1 = Sub((x: Int) => x)
+
+  (s1: Super[Any]) match { case Sub(f) => f("abc") }
+}
+// java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Integer
+//   at scala.runtime.BoxesRunTime.unboxToInt(BoxesRunTime.java:105)
+//   at Test$$anonfun$1.apply(a.scala:5)
+//   at Test$.delayedEndpoint$Test$1(a.scala:7)