| // 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 | |
| struct X<T, y: d where Optional<T : end: U, y) | |
| b<S : A? { | |
| convenience init() { | |
| struct c : d { | |
| func i(v: T.a: Co |