// {"signature":"bool llvm::function_ref<bool (swift::ProtocolConformanceRef)>::callback_fn<(anonymous namespace)::MismatchedIsolatedConformances>(long, swift::ProtocolConformanceRef)"}
// RUN: not %target-swift-frontend -typecheck %s
func a {
  {               print("\(\ " ")\n"
  }
  "\()\n"