v8/test/mjsunit/regress/nativeerror-tostring.js
Gus Caplan cf7646c582 Remove own toString from NativeError prototype
In 5742da056a, the toString property was
accidentally applied to all NativeError prototypes, when it should only
be inherited from Error.prototype.

Refs: https://github.com/tc39/ecma262/issues/1794
Bug: v8:10017
Change-Id: I2af9a31f463deb9871dd7a4a5a2e4dd7485ed38c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1933054
Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#65355}
2019-12-05 22:17:58 +00:00

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JavaScript

// Copyright 2019 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
[
EvalError, RangeError, ReferenceError,
SyntaxError, TypeError, URIError,
].forEach((NativeError) => {
assertFalse(NativeError.prototype.hasOwnProperty('toString'));
assertEquals(NativeError.prototype.toString, Error.prototype.toString);
});