// 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

enum S<T,B{
class A{struct c<I{
class B<A{
var a:c
protocol A protocol A:d}struct d<I:e
