// 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

struct Q<T,j{
class a
struct D:CollectionType
enum S{
struct Q{
struct b{{
}class B<T{
class B<T{enum b:a
