// 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

enum a: a<d = {
enum b = T: b: A<d(f: C) -> a {
}
func d<T, T : B, i : d {
}
let t: d where I) {
}
protocol B :
