// 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<S {
enum A {
func b.init() {
typealias B<d {
struct A.Element == a: (() -> {
map(g.C(T>? = "[c, g == T>() {}
}
let d, U) {
b.endIndex - range.join(.A> T where Optional<d) {
}
}
let a {
func a(t:
