1 files changed, 13 insertions, 0 deletions
diff --git a/tests/run/t6500.scala b/tests/run/t6500.scala
new file mode 100644
index 000000000..8df00592b
--- /dev/null
+++ b/tests/run/t6500.scala
@@ -0,0 +1,13 @@
+object Test extends dotty.runtime.LegacyApp {
+  class Box(val value: Int) extends AnyVal
+
+  trait Foo {
+    def append(box: Box): Foo
+  }
+
+  class Bar extends Foo {
+    override def append(box: Box): Bar = this // produces bad forwarder
+  }
+
+  ((new Bar): Foo).append(new Box(0))
+}