// 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 P {
protocol A : a {
struct Q<T) {
extension NSSet {
}
}
func a(f<T] in
}
func f: A
