// 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
// Distributed under the terms of the MIT license

func v<dc {
    enum v {
        func r
        var _ = r
    }
}
class u  {
}
struct r<ed> : r {
    func r(r: r.w) {
    }
}
enum dc<fe> {   q v: fe
}
protocol n {
}
struct v : n {
    func n<fe v r {
}
class n<v> {
func r<fe u: fe) {
}
func u(r: t = a) {
}
}
struct ed : u {
}
func b<fe : fe, ed : u cb ed.u == fe> (v: ed) {
}
func b<dc : u cb dc.u == v> (v: dc) {
}
class a<u : fe, fe : fe cb u.u == fe> {
}
protocol fe {
}
struct v<dc : fe> : fe {
}
class w {
    func ed<r cb r: dc, r: w>(ed: r) {
}
func b(v: b) -> <r>(() -> r) -> b {
}
protocol u {
    v fe w {
}
r r<ed : w> : w {
}
class u: u {
}
class x : ed {
}
class u<b : u