// 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 a {
protocol a {
typealias b = B)?
typealias B : b() {
}
}
}
func d: b<T) -> Any) {
var d : a {
}
class func b> {
for (self.E == Swift.d == i: NSObject {
}
protocol b {
class B, y: T? {
protocol A {
switch x }
}
}
}
}
var d = b(Any) + seq
l