// 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 c {
let c, Any) {
enum b {
protocol d : U.c {
}
}
}
class a: A, B, e> T> T -> {
"
class B : a {
convenience init()
extension A {
protocol P {
r