v8/test/mjsunit/es6/unicode-regexp-unanchored-advance.js

// Copyright 2013 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.

var s = "a".repeat(1E7) + "\u1234";
assertEquals(["\u1234", "\u1234"], /(\u1234)/u.exec(s));
[regexp] simplify unanchored advance for unicode regexps. When doing advance at the start of an unanchored unicode regexp, we do not have to care about surrogate pairs. If we actually advance into the middle of a surrogate pair, the only choice is to also consume trail surrogate as nothing else can match from there. This reduces the emitted code slightly. By not having choice in the loop, we do not have to push backtrack onto the stack, preventing stack overflow. R=erik.corry@gmail.com, erikcorry@chromium.org Review URL: https://codereview.chromium.org/1676293003 Cr-Commit-Position: refs/heads/master@{#33838} 2016-02-09 09:11:01 +00:00			`// Copyright 2013 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.`

			`var s = "a".repeat(1E7) + "\u1234";`
			`assertEquals(["\u1234", "\u1234"], /(\u1234)/u.exec(s));`