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// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: lastIndex is read but not written when global and sticky are unset.
es6id: 21.2.5.2.2
info: |
21.2.5.2.2 Runtime Semantics: RegExpBuiltinExec ( R, S )
4. Let lastIndex be ? ToLength(? Get(R, "lastIndex")).
[...]
8. If global is false and sticky is false, let lastIndex be 0.
[...]
12. Repeat, while matchSucceeded is false
[...]
c. If r is failure, then
i. If sticky is true, then
1. Perform ? Set(R, "lastIndex", 0, true).
2. Return null.
---*/
var gets = 0;
var counter = {
valueOf: function() {
gets++;
return 0;
}
};
var r = /a/;
r.lastIndex = counter;
var result = r.exec('nbc');
assert.sameValue(result, null);
assert.sameValue(r.lastIndex, counter);
assert.sameValue(gets, 1);
reportCompare(0, 0);
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