dart-sdk/pkg/front_end/testcases/function_in_field.dart

// Copyright (c) 2017, 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.

var x = () {
  var y = 42;
  return y;
};

main() {
  print(x());
}