Language/Expressions/Identifier_Reference/built_in_identifier_t21.dart

// Copyright (c) 2011, 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.

// @dart = 2.9

/// @assertion It is a compile-time error if a built-in identifier is used as
/// the declared name of a prefix, class, type parameter or type alias.
/// @description Checks that it is a compile-time error if a built-in identifier
/// "operator" is used as the declared name of a type variable.
/// @author rodionov
/// @reviewer iefremov


class A<operator> {
//      ^
// [analyzer] unspecified
// [cfe] unspecified
  bool check(x) => x is operator;
//                      ^
// [analyzer] unspecified
// [cfe] unspecified
}

main() {
  new A().check(null);
}