pkg/front_end/testcases/regress/invalid_this_reference_12.dart

// Copyright (c) 2024, 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.

extension on dynamic {
  foo([int bar = foo.baz]) {
  }
}

extension type foo(dynamic whatnot) {
  foo([int bar = foo.baz]) {
  }
}