// 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 a{{}class a{struct S<k:CollectionType}}struct c{struct c<T where H:d{struct i{enum S{struct d{class B{let f=c{struct S{class B<T where T=a{enum B{var f=B{class
