// Took > 10 minutes to run the tail call phase.
object Test {
    def a(): Option[String] = Some("a")

    def main(args: Array[String]) {
        a() match {
            case Some(b1) =>
        a() match {
            case Some(b2) =>
        a() match {
            case Some(b3) =>
        a() match {
            case Some(b4) =>
        a() match {
            case Some(b5) =>
        a() match {
            case Some(b6) =>
        a() match {
            case Some(b7) =>
        a() match {
            case Some(b8) =>
        a() match {
            case Some(b9) =>
        a() match {
            case Some(b10) =>
        a() match {
            case Some(b11) =>
        a() match {
            case Some(b12) =>
        a() match {
            case Some(b13) =>
        a() match {
            case Some(b14) =>
        a() match {
            case Some(b15) =>
        a() match {
            case Some(b16) =>
        a() match {
            case Some(b17) =>
        a() match {
            case Some(b18) =>
        a() match {
            case Some(b19) =>
        a() match {
            case Some(b20) =>
        a() match {
            case Some(b21) =>
        a() match {
            case Some(b22) =>
        a() match {
            case Some(b23) =>
        a() match {
            case Some(b24) =>
        a() match {
            case Some(b25) =>
        a() match {
            case Some(b26) =>
        a() match {
            case Some(b27) =>
        a() match {
            case Some(b28) =>
        a() match {
            case Some(b29) =>
        a() match {
            case Some(b30) =>
                println("yay")
            case None => None
        }
            case None => None
        }
            case None => None
        }
            case None => None
        }
            case None => None
        }
            case None => None
        }
            case None => None
        }
            case None => None
        }
            case None => None
        }
            case None => None
        }
            case None => None
        }
            case None => None
        }
            case None => None
        }
            case None => None
        }
            case None => None
        }
            case None => None
        }
            case None => None
        }
            case None => None
        }
            case None => None
        }
            case None => None
        }
            case None => None
        }
            case None => None
        }
            case None => None
        }
            case None => None
        }
            case None => None
        }
            case None => None
        }
            case None => None
        }
            case None => None
        }
            case None => None
        }
            case None => None
        }
    }
}