// 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 f{{struct Q{protocol A{enum A{class d{{{}}struct B{class a{enum a{{{}}class d{func a{{func a{{{{{}}}}=A
