1 files changed, 14 insertions, 0 deletions
diff --git a/tests/run/t1074.scala b/tests/run/t1074.scala
new file mode 100644
index 000000000..a95f9eedb
--- /dev/null
+++ b/tests/run/t1074.scala
@@ -0,0 +1,14 @@
+import scala.collection.immutable._
+object Test {
+  def main(args : Array[String]) : Unit = {
+    var words = "a" :: "b" :: "cd" :: "de" :: "fg" :: "ef" ::
+               "gh" :: "jk" :: "hj" :: "kl" :: "lm" :: "mn" :: Nil
+    val q0:Set[String] =
+      new HashSet[String]() ++ words
+    val q1 = q0.filter(w => false)
+    val q2 = q1.filter(w => false)
+    Console.println("q0 = " + q0)
+    Console.println("q1 = " + q1+" "+q1.size)
+    Console.println("q2 = " + q2+" "+q2.size)
+ }
+}