// 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
class a<U) {
b: b: a {
init <f = Swift.Element == true }
protocol C = g<D>() {
let x }
return { x {
}
}
self.endIndex - range.Iterator.init() {
struct c = Swift.c : Any) -> {
func g(a<T.B>(T)) {
func i: A, U) {
func b() {
class a {
}
func a<1 {
}
e where B : T>() {
class a {
}
}
}
}
}
struct c {
}
class a<d: b: k) {
}
var b<T> {
}
func f<T : U : X<d = i<T {
}
class B {
typealias d>, d>() {
}
}
}
deinit {
struct A : NSObject {
}
}
var b(c() -> Int
