# 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.md file.

main.dart.patch: |
  // Test that top-level functions can be added

  <<<< "threw"
  ==== "v2"
  foo() {
    print('v2');
  }
  >>>>
  main() {
    try {
      foo();
    } catch(e) {
      print('threw');
    }
  }
