LanguageFeatures/nnbd/weak/overriding/override_checking_A01_FIELD_t20.dart

// 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 In an unmigrated library, override checking is done using legacy
 * types. This means that an unmigrated library can bring together otherwise
 * incompatible methods. When choosing the most specific signature during
 * interface computation, all nullability and requiredness annotations are
 * ignored, and the [Never] type is treated as [Null].
 *
 * @description Check that if legacy class extends opted-in class, legacy field
 * can cannot be of any type but [Null] if parent field is [Never].
 *
 * @author iarkh@unipro.ru
 */
// Requirements=nnbd-weak
// @dart=2.6

import "override_checking_A01_opted_in_lib.dart";

class A1 extends OPTED_NEVER_FIELD {
  int n;
//    ^
// [analyzer] unspecified
// [cfe] unspecified
}

class A2 extends OPTED_NEVER_FIELD {
  dynamic n;
//        ^
// [analyzer] unspecified
// [cfe] unspecified
}

class A3 extends OPTED_NEVER_FIELD {
  Object n;
//       ^
// [analyzer] unspecified
// [cfe] unspecified
}

class A4 extends OPTED_NEVER_FIELD {
  void n;
//     ^
// [analyzer] unspecified
// [cfe] unspecified
}

main() {
  A1();
  A2();
  A3();
  A4();
}