// 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

let a{class d{struct S{struct d{enum S<T where g:a{class n{let h=Int}struct B{struct S{class b{class b{struct c{class b{struct S{class a{class a{protocol a{let a
