test/built-ins/RegExp/prototype/Symbol.split/u-lastindex-adv-thru-failure.js


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28

// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
description: >
    lastIndex is advanced according to width of astral symbols following match failure
es6id: 21.2.5.11
info: |
    21.2.5.11 RegExp.prototype [ @@split ] ( string, limit )

    [...]
    7. Let flags be ToString(Get(rx, "flags")).
    8. ReturnIfAbrupt(flags).
    9. If flags contains "u", let unicodeMatching be true.
    10. Else, let unicodeMatching be false.
    [...]
    24. Repeat, while q < size
        a. Let setStatus be Set(splitter, "lastIndex", q, true).
        b. ReturnIfAbrupt(setStatus).
        c. Let z be RegExpExec(splitter, S).
        d. ReturnIfAbrupt(z).
        e. If z is null, let q be AdvanceStringIndex(S, q, unicodeMatching).
features: [Symbol.split]
---*/

var result = /\udf06/u[Symbol.split]('\ud834\udf06');

assert.sameValue(result.length, 1);