// 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

protocol a {
protocol a {
typealias b = B)?
typealias B : b() {
}
}
}
func d: b<T) -> Any) {
var d : a {
}
class func b> {
for (self.E == Swift.d == i: NSObject {
}
protocol b {
class B, y: T? {
protocol A {
switch x }
}
}
}
}
var d = b(Any) + seq
l