<html>
    <head>
      <base href="https://bugs.webkit.org/" />
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Crash in WebCore::Animation::animationsMatch"
   href="https://bugs.webkit.org/show_bug.cgi?id=164913">164913</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Crash in WebCore::Animation::animationsMatch
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>WebKit
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>WebKit Nightly Build
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>PC
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>Normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P2
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Layout and Rendering
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>webkit-unassigned&#64;lists.webkit.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>mcatanzaro&#64;igalia.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>bugs-noreply&#64;webkitgtk.org, simon.fraser&#64;apple.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>I hit this crash when loading Epiphany's new tab page yesterday. We have 24 reports of it:

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 WebCore::Animation::animationsMatch at /usr/src/debug/webkitgtk-2.14.1/Source/WebCore/platform/animation/Animation.cpp:138
 #1 WebCore::Animation::operator== at /usr/src/debug/webkitgtk-2.14.1/Source/WebCore/platform/animation/Animation.h:168
 #2 WebCore::Animation::operator!= at /usr/src/debug/webkitgtk-2.14.1/Source/WebCore/platform/animation/Animation.h:169
 #3 WebCore::AnimationList::operator== at /usr/src/debug/webkitgtk-2.14.1/Source/WebCore/platform/animation/AnimationList.cpp:59
 #4 WTF::arePointingToEqualData&lt;std::unique_ptr&lt;WebCore::AnimationList, std::default_delete&lt;WebCore::AnimationList&gt; &gt; &gt; at /usr/src/debug/webkitgtk-2.14.1/Source/WTF/wtf/PointerComparison.h:33
 #5 WebCore::StyleRareNonInheritedData::operator== at /usr/src/debug/webkitgtk-2.14.1/Source/WebCore/rendering/style/StyleRareNonInheritedData.cpp:258
 #6 WebCore::DataRef&lt;WebCore::StyleRareNonInheritedData&gt;::operator== at /usr/src/debug/webkitgtk-2.14.1/Source/WebCore/rendering/style/DataRef.h:51
 #7 WebCore::RenderStyle::operator== at /usr/src/debug/webkitgtk-2.14.1/Source/WebCore/rendering/style/RenderStyle.cpp:305
 #8 WebCore::RenderStyle::operator!= at /usr/src/debug/webkitgtk-2.14.1/Source/WebCore/rendering/style/RenderStyle.h:549
 #9 WebCore::Style::determineChange at /usr/src/debug/webkitgtk-2.14.1/Source/WebCore/style/StyleChange.cpp:63

There is a detailed backtrace attached to <a href="show_bug.cgi?id=164913#c1">comment #1</a> in the downstream bug.</pre>
        </div>
      </p>
      <hr>
      <span>You are receiving this mail because:</span>
      
      <ul>
          <li>You are the assignee for the bug.</li>
      </ul>
    </body>
</html>