// 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
var x1 =I Bool !(a)
}
func prefix(with: Strin) -> <T>(() -> T) in
    func d() -> String {
        return 1
k f {
    typealias c
}
class g<i{
}
d(j i)
class h {
    typealias i = i
}
protocol b {
    class func e()
}
struct c {
    var d: b.Type
    f}
enum S<T> {
    case C(T, () -> ())
}
