// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 19.5.1
description: Super need to be called to initialize internals
info: |
  19.5.1 The Error Constructor

  ...
  The Error constructor is designed to be subclassable. It may be used as the
  alue of an extends clause of a class definition. Subclass constructors that
  intend to inherit the specified Error behaviour must include a super call to
  the Error constructor to create and initialize subclass instances with a
  [[ErrorData]] internal slot.
---*/

class CustomError extends Error {
  constructor() {}
}

assert.throws(ReferenceError, function() {
  new CustomError('foo');
});

reportCompare(0, 0);