1 files changed, 10 insertions, 0 deletions
diff --git a/tests/untried/pos/t1438.scala b/tests/untried/pos/t1438.scala
new file mode 100644
index 000000000..221c3439d
--- /dev/null
+++ b/tests/untried/pos/t1438.scala
@@ -0,0 +1,10 @@
+class C[A] {
+  type CC[B] <: C[B]
+  def aio[T]: T = aio[T]
+}
+class D[A] extends C[A] {
+  protected def nv[B](elems: Iterator[B]): CC[B] = {
+    val x = new D[B]
+    x.aio[CC[B]]
+  }
+}