// 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

func b<I : A? = [Int>Bool)
protocol c == B, "
f: X<d = i: NSObject {
struct A<Q<d {
struct D : A {
protocol A {
protocol A {
