// Copyright (c) 2011, 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.

// @dart = 2.7

import "package:expect/expect.dart";

null1() {
  return; // implicit null;
}

null2() {
  // Implicit null return.
}

null3() {
  var x; // Implicit null value.
  return x;
}

void main() {
  Expect.equals(null, null1());
  Expect.equals(null, null2());
  Expect.equals(null, null3());
}
