pkg/front_end/testcases/regress/ambiguous_builder_01.dart

// Copyright (c) 2020, 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.md file.

x.y = 42;
x.z = true;
void foo() {
  if (x != null) {}
  if (null != x) {}
}

main() {}