1 files changed, 7 insertions, 0 deletions
diff --git a/tests/pos/t0066.scala b/tests/pos/t0066.scala
new file mode 100644
index 000000000..2153264e7
--- /dev/null
+++ b/tests/pos/t0066.scala
@@ -0,0 +1,7 @@
+class GBTree[A, B] /*with Map[A, B, GBTree[A,B]]*/ {
+    abstract class Tree[A,B];
+    case class Node[A,B](key:A,value:B,smaller:Node[A,B],bigger:Node[A,B])
+	extends Tree[A,B];
+    case class Nil[A,B]() extends Tree[A,B];
+
+}