// 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

let:{
class A{
case
{
{{
{({
[[{
{
({
{
{
[
{
{
{{{
{{
{
{
((({
{
(((((({
{
{
{
{
{{{
{
"
protocol a{
extension{
class
case,