// 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 Return statement: If N is a statement of the form return E1; then:
///
///  Let before(E) = before(N).
///  Let after(N) = unreachable(after(E));
///
/// @description Checks reachability after return statement. Test some function
///
/// @author sgrekhov@unipro.ru


test() {
  late int i;
  bool b = false;
  if (b) {
    return;
    i = 42; // Variable is initialized in a dead code. This leaves it definitely unassigned
  }
  i; // It is an error to read a local late variable when it is definitely unassigned.
//^
// [analyzer] unspecified
// [cfe] unspecified
}

main() {
  test();
}
