// 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 c<T where g: a {class b{struct B<T A{
var _=B{
= A . {
}}}
let ={}struct B
let :{
struct b{
enum A{
struct Q{a
class n{enum b{
let a
