// 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 B{
class p{
{
}
enum S{
var d=a{
}
struct B:Collection}}}
enum E<T where B:a{struct B{{}struct B<g{class B{class d{var _=B
a