// 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 B<T{class b{func x{let f=b<T:var d{enum S<T where g:b{enum b{enum b{{}class B{var _=B{
