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    <body><span class="vcard"><a class="email" href="mailto:akling&#64;apple.com" title="Andreas Kling &lt;akling&#64;apple.com&gt;"> <span class="fn">Andreas Kling</span></a>
</span> changed
              <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Separate render tree updating from style resolve"
   href="https://bugs.webkit.org/show_bug.cgi?id=155298">bug 155298</a>
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            <th>What</th>
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           <td style="text-align:right;">Attachment #274983 Flags</td>
           <td>review?
           </td>
           <td>review+
           </td>
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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Separate render tree updating from style resolve"
   href="https://bugs.webkit.org/show_bug.cgi?id=155298#c85">Comment # 85</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Separate render tree updating from style resolve"
   href="https://bugs.webkit.org/show_bug.cgi?id=155298">bug 155298</a>
              from <span class="vcard"><a class="email" href="mailto:akling&#64;apple.com" title="Andreas Kling &lt;akling&#64;apple.com&gt;"> <span class="fn">Andreas Kling</span></a>
</span></b>
        <pre>Comment on <span class=""><a href="attachment.cgi?id=274983&amp;action=diff" name="attach_274983" title="patch">attachment 274983</a> <a href="attachment.cgi?id=274983&amp;action=edit" title="patch">[details]</a></span>
patch

View in context: <a href="https://bugs.webkit.org/attachment.cgi?id=274983&amp;action=review">https://bugs.webkit.org/attachment.cgi?id=274983&amp;action=review</a>

r=me

<span class="quote">&gt; Source/WebCore/style/RenderTreeUpdater.cpp:117
&gt; +    // FIXME: SVG &lt;use&gt; element may cause tree mutations during style recalc.</span >

This would be nice to get fixed, then.

<span class="quote">&gt; Source/WebCore/style/StyleUpdate.cpp:48
&gt; +    auto it = m_elements.find(&amp;element);
&gt; +    if (it == m_elements.end())
&gt; +        return nullptr;
&gt; +    return &amp;it-&gt;value;</span >

I suppose this could just be &quot;m_elements.get(&amp;element);&quot;</pre>
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