// RUN: not %target-swift-frontend %s -parse

// Distributed under the terms of the MIT license
// Test case submitted to project by https://github.com/practicalswift (practicalswift)
// Test case found by fuzzing

func g<T, Any) {
protocol b {
let a {
}
}
extension String {
var c: C {
extension NSData {
var f() -> Bool {
}
}
}
}
class A, y: A<T>: a {
return m() {
}
}
class b(range.Type
struct D : T where Optional<h = i: Array) -> Self {
switch x }
return b()?
struct B<d>(c: d where I) {
}
self.Element>) -> {
b: A<T>() {
var a<c, ((A.a)
public subscript ((Any, ")
}
var b {
init() -> : (x) {
S<Int) -> String {
var b> {
class B {
protocol P {
}
}
}())
}
return {
}
protocol b = b<1 {
}
let end = b: String {
import Foundation
}
}