1 files changed, 13 insertions, 0 deletions
diff --git a/tests/patmat/t9779.scala b/tests/patmat/t9779.scala
new file mode 100644
index 000000000..9c418b0b1
--- /dev/null
+++ b/tests/patmat/t9779.scala
@@ -0,0 +1,13 @@
+trait Elems {
+  sealed class Elem[A] extends Dummy
+
+  val UnitElement: Elem[Unit]
+
+  trait Dummy
+}
+
+class BadMatch[A <: Elems](a: A) {
+  private def toLuaValue(eX: a.Elem[_]): String = eX match {
+    case a.UnitElement => "" // type mismatch
+  }
+}
+\ No newline at end of file