// 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

struct g{
let:SequenceType
struct c<T where I:P{
class A
{
func a{
struct Q
{{}
struct B{
let f=c{
}
}
}
}
protocol c
struct c<l
