/*
 * Copyright (c) 2019, 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.
 */
/**
 * @assertion A check of the form [e != null] or of the form [e is T] where [e]
 * has static type [T?] promotes the type of [e] to [T] in the [true]
 * continuation, and to [Null] in the [false] continuation.
 *
 * @description Check that type of [e] is promoted to [T] in the [true]
 * condition. Test [e != null] expression. Test pre-NNBD legacy types.
 * @author iarkh@unipro.ru
 */
// Requirements=nnbd-weak
import "legacy_lib.dart";

main() {
  A? a = new A();

  if (a != null) {
    a.foo();
    A a1 = a;
  }
}