// Copyright (c) 2020, 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 assigned is a boolean value indicating whether the variable has
/// definitely been assigned at the given point in the source code. When assigned
/// is true, we say that the variable is definitely assigned at that point.
///
/// @description Checks definite assignment and switch statement
///
/// @author sgrekhov@unipro.ru

// Requirements=nnbd-strong

main() {
  int n;
  int i = 0;
  switch(i) {
    case 1:
      n = 42;
      break;
    default:
      n = 42;
  }
  n;  // It's not an error to read local non-nullable variable when it is definitely assigned
}
