// 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

protocol b {
struct c : A) + seq
}
class A {
}
struct A<T where l.e = d.join()
protocol c {
}
func f: Range<T where Optional<T) -> {
b: (i<c
