// 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 a{{struct Q<T{{}struct Q{class p{class p{var:B<{{{}}enum B{struct Q{let a{{let a{{{let:{enum S{class B{{}var:{{let:{{let:{for f={