| // 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. | |
| import "dart:ffi"; | |
| class S2 extends Struct { | |
| external Pointer<Int8> notEmpty; | |
| external Null s; //# 01: compile-time error | |
| } | |
| void main() { | |
| S2? s2; | |
| } |