// RUN: not --crash %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
let C{class B{class n{class a{struct Q{
class B{
{{}}struct Q<T where B:C{
class C{var f=b
struct c{
class B{
enum S{
protocol A
