v8/test/mjsunit/regress/regress-crbug-581577.js

// Copyright 2015 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.

assertEquals("", RegExp.prototype.flags);
ES2015 web compat workaround: RegExp.prototype.flags => "" It turns out that some old polyfill library uses RegExp.prototype.flags as a way of feature testing. It's not clear how widespread this is. For now, as a minimal workaround, we can return undefined from getters like RegExp.prototype.global when the receiver is RegExp.prototype. This patch implements that strategy but omits a UseCounter to make backports easier. R=adamk CC=yangguo@chromium.org BUG=chromium:581577 LOG=Y CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel Review URL: https://codereview.chromium.org/1640803003 Cr-Commit-Position: refs/heads/master@{#34201} 2016-02-23 01:48:31 +00:00			`// Copyright 2015 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.`

			`assertEquals("", RegExp.prototype.flags);`