// 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 s() -> p {
class w: r, n {
b, g : b where f.d == g> {
}
protocol b {
}
struct c<h : b> : b {
}
m k {
}
struct d<i : b> : b {
rotocol a : a {
}
strucequ}
struct c<d: Sequence, b where Optional<b> == d.Iterator.Element>
func b<e>(e : e) -> c