1 files changed, 16 insertions, 0 deletions
diff --git a/tests/run/t4895.scala b/tests/run/t4895.scala
new file mode 100644
index 000000000..fdd091511
--- /dev/null
+++ b/tests/run/t4895.scala
@@ -0,0 +1,16 @@
+object Test {
+
+  def checkPar(sz: Int): Unit = {
+    import collection._
+    val hs = mutable.HashSet[Int]() ++ (1 to sz)
+    assert(hs.par.map(_ + 1).seq.toSeq.sorted == (2 to (sz + 1)))
+  }
+
+  def main(args: Array[String]): Unit = {
+    for (i <- 0 until 100) checkPar(i)
+    for (i <- 100 until 1000 by 50) checkPar(i)
+    for (i <- 1000 until 10000 by 500) checkPar(i)
+    for (i <- 10000 until 100000 by 5000) checkPar(i)
+  }
+
+}