// RUN: not %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

let v{{{}class A{class A{var a{class B{protocol c{class a{var b{enum b{class A{class A{class d{class B{class d{class B{{}class C{let a{struct S{}(_={
