func test1() {
  if true {
    let x = 1
    print(x)
  } else {
    let x = 2
    print(x)
  }
}

func test2(arg1: Int?, arg2: (Int, String)?) {
  if let x = arg1 {
    print(x)
  } else if let (x, y) = arg2 {
    print(x, y)
  }
}

func test3(arg: Int?) {
  switch arg {
  case let .some(x) where x == 0:
    print(x)
  case let .some(x) where x == 1,
       let .some(x) where x == 2:
    print(x)
    fallthrough
  case let .some(x) where x == 3:
    print(x)
  default:
    break
  }
}

struct Err1 : Error { }
func test4(arg: () throws -> Void) {
  do {
    try arg()
  } catch let x as Err1 {
    print(x)
  } catch let x {
    print(x)
  }
}

func test5(_ x: Int) {
  let x = x 
  print(x)
}

func testCaptureVariable() {
  let <base>capturedVariable</base> = 0

  _ = { [<base>capturedVariable</base>] in
    print(<base>capturedVariable</base>)
  }
}