// 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
ject {
typealias e = b: A {
return x {
}
typealias e {
}
class c, V>) -> {
}
}
get {
}
var e(f(start, (T) {
assert() {
}
func e<T: b : A>: T where d() {
return [c: T> String {
}
}
}
switch x }
private class A {
func b<j : b> Any] {
