1 files changed, 17 insertions, 0 deletions
diff --git a/tests/pos/Labels.scala b/tests/pos/Labels.scala
index 4a84175af..d82287313 100644
--- a/tests/pos/Labels.scala
+++ b/tests/pos/Labels.scala
@@ -1,3 +1,7 @@
+import dotty.tools.dotc.ast.Trees.Thicket
+import dotty.tools.dotc.ast.tpd._
+
+
 object Labels {
   def main(args: Array[String]): Unit = {
   var i = 10
@@ -18,4 +22,17 @@ object Labels {
   case t@2 => println("two" + t)
   case _ => println("default")
  }
+
+ def flatten(trees: Tree): Int = {
+   trees match {
+     case Thicket(elems) =>
+       while (trees ne trees) {
+       }
+     case tree =>
+       33
+   }
+   55
+ }
+
+
 }