// 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 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 it is no error to have multiple ? but not in the type
/// declaration
/// @author sgrekhov@unipro.ru

// Requirements=nnbd-weak
class A {}

class C<T> {
  T? t;
}

main() {
  C<int?>();      // C.t has type int??, it's Ok
  C<A?>();        // C.t has type A??, it's Ok
}