pkg/front_end/testcases/general/argument_mismatch.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.
// @dart=2.9
foo() {}

test() {
  foo(null);
}

main() {}