// 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

class A{{}let a{a:{struct c{var:Collection{class d{struct d{enum E<T where B:a{struct B{{}struct B<g{class B{class d{var _=B