File: t6994.scala

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scala 2.11.12-6
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object Test {
  object NF {
    def unapply(t: Throwable): Option[Throwable] = None
  }
  val x = (try { None } catch { case NF(ex) => None }) getOrElse 0
  // Was emitting a spurious warning post typer:
  // "This catches all Throwables. If this is really intended, use `case ex6 : Throwable` to clear this warning."
}