| // 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 A { | |
| func g<U>(h: (A, U) -> U) -> (A, U) -> U { | |
| enum A : String { | |
| case b = "" | |
| } | |
| let c: A? = nil | |
| if c == .b { |