// 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
import Foundation
class m<j>: NSObject {
    var h: j
 g -> k = l $n
}
b f:  _ = j() {
    }
}
func k<g {
    enum k {
        func l
    var _ = l
func i(c: () -> ()) {
}
class a {
    var _ = i() {
    }
}
func C<D, E: A where D.C == E> {
}
func prefix(with: String) -> <T>(() -> T) -> String {
  { g in "\(withing
}
clasnintln(some(xs))
func a<T>() -> (T, T -> T) -> T {
    var b: ((T, T -> T) -> T)!
    return b
}
}
class p {
    u _ = q() {
    }
}
u l = r
u s: k -> k = {
    n $h: m.j) {
    }
}
o l() {
    ({})
}
struct m<t> {
    let p: [(t, () -> ())] = []
}
protocol p : p {
}
protocol m {
    o u() -> String
}
class j {
    o m() -> String {
        n ""
    }
}
class h: j, m {
    q o m() -> String {
        n ""
    }
    o u() -> S, q> ) -> d)
import Foundation
class k<f>: NSObject {
    d e: f
    g(e: f) {
        j        h.g()
    }
}
d
protocol i : d { func d
i
var f = 1
var e: Int -> Int = {
    return $0
}
let d: Int =  { c, b in
}(f, e)
}
class i {
    func d((h: (Any, AnyObject)) {
        d(h)
    }
}
d
h)
func d<i>() -> (i, i -> i) -> i {
   i j i.f = {
}
protocol d {
   class func f()
}
class i: d{  class func f {}
func f() {
    ({})
}
func f(k: Any, j: Any) -> (((Any, Any) -> Any) -> c
k)
func c<i>() -> (i, i -> i) -> i {
   k b k.i = {
}
 {
   i) {
        k  }
}
protocol c {
   class func i()
}
class k: c{  class func i {
class c {
    func b((Any, c))(   typealias g = a<d<i>i) {
}
let d = a
d()
a=d g a=d
protocol a : a {
}
class a {
    typealias b = b
