// Copyright (c) 2022, 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.

class C {
  var value = () {
    var value = something();
    if (value == null) {
      throw '';
    }
    var result = value;
    return result;
  }();
}

String? something() => 'something';

void main() {
  print(C().value.length);
}
