| // 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. |
| |
| import "package:expect/expect.dart"; |
| |
| /// It is a compile-time error if a named formal parameter begins with an '_'. |
| |
| class Foo { |
| num _y; |
| Foo.private({this._y: 77}) {} |
| // ^^^^^^^ |
| // [analyzer] COMPILE_TIME_ERROR.PRIVATE_OPTIONAL_PARAMETER |
| // ^ |
| // [cfe] An optional named parameter can't start with '_'. |
| } |
| |
| main() { |
| Foo.private(_y: 222); |
| } |
