// 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

struct B<T where B : U -> ((g<T.e == {
return self.h : X.C<T where Optional<T where f, d>(n: A> T>(")
struct A {
switch x {
}
var b = B