pkg/front_end/testcases/nnbd/issue41415.dart

// Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

main() {
  // Pre-NNBD bottom type.
  int Function(Null) f = (x) => 1; // Runtime type is int Function(Object?)
  // NNBD bottom type.
  int Function(Never) g = (x) => 1; // Runtime type is int Function(Object?)
  // NNBD bottom type.

  int Function(Never?) h = (x) => 1; // Runtime type is int Function(Object?)

  int Function(String) i = (x) => 1; // Runtime type is int Function(String)
}