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    <body><span class="vcard"><a class="email" href="mailto:sbarati&#64;apple.com" title="Saam Barati &lt;sbarati&#64;apple.com&gt;"> <span class="fn">Saam Barati</span></a>
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   title="NEW - [test262] Fixing mapped arguments object property test case"
   href="https://bugs.webkit.org/show_bug.cgi?id=159398">bug 159398</a>
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           <td style="text-align:right;">Attachment #297500 Flags</td>
           <td>review?
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           <td>review+
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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [test262] Fixing mapped arguments object property test case"
   href="https://bugs.webkit.org/show_bug.cgi?id=159398#c84">Comment # 84</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [test262] Fixing mapped arguments object property test case"
   href="https://bugs.webkit.org/show_bug.cgi?id=159398">bug 159398</a>
              from <span class="vcard"><a class="email" href="mailto:sbarati&#64;apple.com" title="Saam Barati &lt;sbarati&#64;apple.com&gt;"> <span class="fn">Saam Barati</span></a>
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        <pre>Comment on <span class=""><a href="attachment.cgi?id=297500&amp;action=diff" name="attach_297500" title="Patch">attachment 297500</a> <a href="attachment.cgi?id=297500&amp;action=edit" title="Patch">[details]</a></span>
Patch

View in context: <a href="https://bugs.webkit.org/attachment.cgi?id=297500&amp;action=review">https://bugs.webkit.org/attachment.cgi?id=297500&amp;action=review</a>

Nice. r=me with comments addressed.

<span class="quote">&gt; Source/JavaScriptCore/ChangeLog:29
&gt; +        to store wich arguments[i] descriptor was changed from its default</span >

Typo: wich =&gt; which

<span class="quote">&gt; Source/JavaScriptCore/runtime/GenericArgumentsInlines.h:70
&gt; +    bool result = Base::getOwnPropertySlot(thisObject, exec, ident, slot);</span >

Is this just to get the attributes?

<span class="quote">&gt; Source/JavaScriptCore/runtime/GenericArgumentsInlines.h:234
&gt; +            if (thisObject-&gt;isMappedArgument(optionalIndex.value())) {</span >

Nit: you can just use index since it's defined above.

<span class="quote">&gt; Source/JavaScriptCore/runtime/GenericArgumentsInlines.h.orig:1
&gt; +/*</span >

Oops. Please remove file.</pre>
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