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Read lastIndex property before processing flags in RegExpBuiltinExec #798

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Feb 7, 2017
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Read lastIndex property before processing flags in RegExpBuiltinExec #798

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2 changes: 1 addition & 1 deletion spec.html
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Expand Up @@ -29638,11 +29638,11 @@ <h1>Runtime Semantics: RegExpBuiltinExec ( _R_, _S_ )</h1>
1. Assert: _R_ is an initialized RegExp instance.
1. Assert: Type(_S_) is String.
1. Let _length_ be the number of code units in _S_.
1. Let _lastIndex_ be ? ToLength(? Get(_R_, `"lastIndex"`)).
1. Let _flags_ be _R_.[[OriginalFlags]].
1. If _flags_ contains `"g"`, let _global_ be *true*, else let _global_ be *false*.
1. If _flags_ contains `"y"`, let _sticky_ be *true*, else let _sticky_ be *false*.
1. If _global_ is *false* and _sticky_ is *false*, let _lastIndex_ be 0.
1. Else, let _lastIndex_ be ? ToLength(? Get(_R_, `"lastIndex"`)).
1. Let _matcher_ be _R_.[[RegExpMatcher]].
1. If _flags_ contains `"u"`, let _fullUnicode_ be *true*, else let _fullUnicode_ be *false*.
1. Let _matchSucceeded_ be *false*.
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