// 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

class T{class A{
struct S{
enum b<T where k:A{
struct A{struct A{let:BooleanType
let:{struct b{enum S{struct B{
let a=A{
