// 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

func f<T>() -> T -> T {
return { x in xol A {
}
struct B<T : A> {
}
struct D : C {
func g<g: e where g.h == f.h> {
}
protocol e {
}
func a(b: Int = 0) {
}
let c = a
