// Copyright (c) 2021, 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 null literal: If N is the literal null, then:
 *  Let null(N) = before(N).
 *  Let notNull(N) = unreachable(before(N))
 * @description Checks reachability after null literal
 *
 * @author sgrekhov@unipro.ru
 * @issue 41985
 */
// Requirements=nnbd-weak

main() {
  int i;
  if (null == null) {
    i = 42;  // condition is always true therefore `i` must be definitely assigned
  }
  i;  // It's not an error to read local non-nullable variable if it is definitely assigned
}