// 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

{protocol b{
{
{
{
{{{""{{{{
{
([
{[([{{{
[
{{
[{{[{{{({)
d="
{{{
({{"
class
case,