1 files changed, 17 insertions, 0 deletions
diff --git a/test-nsc/files/pos/simplelists.scala b/test-nsc/files/pos/simplelists.scala
new file mode 100755
index 0000000000..73b04a8762
--- /dev/null
+++ b/test-nsc/files/pos/simplelists.scala
@@ -0,0 +1,17 @@
+    abstract class List[+a] {
+      def head: a;
+      def tail: List[a];
+      def cons[b >: a](x: b): List[b] = new Cons[b, a](x, this);
+    }
+
+    object Nil extends List[All] {
+      def error(msg: String): All = throw new java.lang.Error(msg);
+      def head: All = error("Nil.head");
+      def tail: List[All] = error("Nil.tail");
+    }
+
+    class Cons[c, d <: c](x: c, xs: List[d]) extends List[c] {
+      def head: c = x;
+      def tail: List[c] = xs;
+    }
+