// 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{struct c:b class a{
class d<T where B:C{{}struct c{
class C{
var f=c
struct D{
class a{
struct S<T{
class a{class a{
class B
