// 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

struct B() -> U)
enum A : a {
}
protocol a {
}
protocol a {
typealias f : A = B
func b(n: (c) {
}
typealias d: d wher