// 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 f() {
    ({})
}
 a
}
s: X.Type) {
    }
}
class c {
    func b((Any, c))(a:  { u o "\(v): \(u())" }
}
struct e<r> {
    j p: , () -> ())] = []
}
prtocolAny) -> Any in
        return p
    })
}
b(a(1, a(2, 3)))
func f Boolean>(b: T) {
}
f(   func b( d
{
  o t = p
}
struct h : n {
  t : n q m.t == m> (h: m) {
}
func q<t : n q t.t == g> (h: t) {
}
q(h())
func r(g: m) -> <s>(() -> s) -> n
protocol A {
    typealias E
}
struct B<T : A> {
    let h: T
    let i: T.E
}
protocol C {
    typealias F
    fu {
        o  }
}
s m {
   class func s()
}
class p: m{  cl
