// 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 i() {
struct A<l : Array<T.b in return self.A? {
}
var d.b: String {
class A = {
for c {
}
var b.f = compose(start, A {
}
class B : b<T] {
struct A {
}
}
}
}
func i: a {
}
class A {
self.a<T>()) {
}
}
class a {
func c<h, object2: c = {
}
}
print(T> T where B {
}
let b {
d.<T -> T : c) {
}
}
typealias e<Q<T.c() {
func i(Any) {
return b(n: k) {
[c, T {
a<Int) {
protocol A : T) {
}
}
}
let t: H) -> {
class A> {
}
}
protocol P {
}
}
convenience init(n: H) {
}
var _ = 0.f == [T.b {
class a {
protocol A {
}
}
})
