// none of these should complain about exhaustivity class Test { // It would fail on the following inputs: (_, false), (_, true) def x(in: (Int, Boolean)) = in match { case (i: Int, b: Boolean) => 3 } // There is no warning if the Int is ignored or bound without an explicit type: def y(in: (Int, Boolean)) = in match { case (_, b: Boolean) => 3 } // Keeping the explicit type for the Int but dropping the one for Boolean presents a spurious warning again: // It would fail on the following input: (_, _) def z(in: (Int, Boolean)) = in match { case (i: Int, b) => 3 } }