| // 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 | |
| extension Array { | |
| enum S.init() { | |
| var f() { | |
| return b() -> String { | |
| } | |
| } | |
| protocol d : a { | |
| class func a: d, y: |