/** Tests the optimiser (not to loop on 'reverse'). */

object Test extends dotty.runtime.LegacyApp {
  def foo: Unit = {
    val s3 = Stream.range(1, 1000) //100000 (ticket #153: Stackoverflow)

    // ticket #153
    def powers(x: Int) = if ((x&(x-1)) == 0) Some(x) else None
    println(s3.flatMap(powers).reverse)
  }

  foo
}