| // This source file is part of the Swift.org open source project |
| // Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors |
| // Licensed under Apache License v2.0 with Runtime Library Exception |
| // |
| // See https://swift.org/LICENSE.txt for license information |
| // See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors |
| |
| // RUN: not %target-swift-frontend %s -typecheck |
| protocol Element |
| { |
| typealias ItemType = (Int, Int) |
| } |
| |
| if let i = [(1, 2), (3, 4)].index{ (G : Element.ItemType) in |
| G.1 == 1 |
| } |
| |
