// 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 The grammar for types does not allow multiple successive ?
/// operators on a type. That is, the grammar for types is nominally equivalent
/// to:
///  type' ::= functionType
///  | qualified typeArguments?
///  type ::= type' `?`?
///
/// @description Check that the grammar for types does not allow multiple
/// successive ? operators on a type. Test legacy pre-NNBD types
/// @author sgrekhov@unipro.ru

// Requirements=nnbd-weak
import "legacy_lib.dart";

class B<X extends A??> {}
//                  ^
// [analyzer] unspecified
// [cfe] unspecified

test(A?? a) {}
//     ^
// [analyzer] unspecified
// [cfe] unspecified

main() {
  A?? a = null;
//  ^
// [analyzer] unspecified
// [cfe] unspecified
}