1 files changed, 25 insertions, 0 deletions
diff --git a/tests/run/t4054.scala b/tests/run/t4054.scala
new file mode 100644
index 000000000..b57c08361
--- /dev/null
+++ b/tests/run/t4054.scala
@@ -0,0 +1,25 @@
+
+
+
+
+
+
+
+
+object Test {
+  def main(args: Array[String]): Unit = {
+    val it = Iterator.from(1).map(n => n * n).scanLeft(0)(_+_)
+
+    assert(it.next == 0)
+    assert(it.next == 1)
+    assert(it.next == 5)
+    assert(it.next == 14)
+    assert(it.next == 30)
+    assert(it.next == 55)
+    assert(it.next == 91)
+    assert(it.next == 140)
+    assert(it.next == 204)
+    assert(it.next == 285)
+    assert(it.next == 385)
+  }
+}