v8/test/mjsunit/regress/regress-5845.js

// Copyright 2017 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.

assertDoesNotThrow('/(?:(?=(foo)))?/u.exec("foo")');
assertThrows('/(?=(foo))?/u.exec("foo")');
[regexp] Implement regexp groups as wrapper. Non-capturing groups so far did not have any effect, so we elided them in the regexp parser. However, they do affect how lookarounds are parsed: in unicode mode, lookarounds are not quantifiable. They are however if wrapped in a group. BUG=v8:5845 Review-Url: https://codereview.chromium.org/2636883002 Cr-Commit-Position: refs/heads/master@{#42436} 2017-01-18 08:14:59 +00:00			`// Copyright 2017 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.`

			`assertDoesNotThrow('/(?:(?=(foo)))?/u.exec("foo")');`
			`assertThrows('/(?=(foo))?/u.exec("foo")');`