// 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{{}class a{struct r{
struct B{class B{var d{
func f{{}class A{class a{var A{{{}enum S{class
case,