// 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.

void promotes_nullability(int? x) {
  if (x is int) {
    /*nonNullable*/
    x;
  } else {
    x;
  }
}
