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

// 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 C {
protocol B {
typealias C = b()
}
typealias e where S) {
}
typealias b = B
