// 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
func c<j {
class B<j {
class A {
self..h: m {
}
}
class func f(t) -> () {
class A {
func b: d h = c: Sequence where f)] {
}
func f> {
return ").a: Boolean)
let c = f.v : Any, y):}
}
() -> Any, e<T: d {
}
}
func e: a {
func e> String {
l == a: A {
func c<b(p
let foo as String) -> T where g() -> {
typealias d: a {
for (n()) {
prot
