// RUN: not %target-swift-frontend -swift-version 4 %s -typecheck

func flatterMap(_ records: [((Int))]) -> [Int] {
  records.flatMap { _ in return 1 } // expected-note {{}}
}

Add a fixed crasher which triggers closure return diagnostics related to rdar://problem/33067102
[QoI] Add a fixed crasher which triggers closure return diagnostics related to rdar://problem/33067102
