# 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 deleting an instance method works, even if stored in a tear-off

  class C {
  <<<< ["instance is null","v1"]
    m() {
      print('v1');
    }
  ==== {"messages":[],"hasCompileTimeError":1}
  >>>>
  }
  var closure;
  main() {
    if (closure == null) {
      print('instance is null');
      closure = new C().m;
    }
    closure();
  }
