1 files changed, 14 insertions, 0 deletions
diff --git a/test/files/neg/t8989.scala b/test/files/neg/t8989.scala
new file mode 100644
index 0000000000..8ed6a901cd
--- /dev/null
+++ b/test/files/neg/t8989.scala
@@ -0,0 +1,14 @@
+class A extends Product1[Int] {
+    def _1 = 1
+    def isEmpty = false // used by scalac
+    def isDefined = !isEmpty // used by dotty
+    def canEqual(a: Any) = true
+}
+
+object d{
+  def unapply(a: Any) = new A
+  val p: Any = ???
+  val f = p match {case d(1) => true; case _ => false}
+}
+
+