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      <base href="https://bugs.webkit.org/" />
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - AX: Crash when AX trying to create element for an old auto fill element"
   href="https://bugs.webkit.org/show_bug.cgi?id=155943">155943</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>AX: Crash when AX trying to create element for an old auto fill element
          </td>
        </tr>

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

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

        <tr>
          <th>Version</th>
          <td>Safari 9
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

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

        <tr>
          <th>Keywords</th>
          <td>InRadar
          </td>
        </tr>

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

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

        <tr>
          <th>Component</th>
          <td>Accessibility
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>cfleizach&#64;apple.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>webkit-bug-importer&#64;group.apple.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>AX code can access an auto fill element that is still there as a Node, but has no renderer, and then add it to its child list as an empty refPtr

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   com.apple.WebCore                 0x00007fff9d11a403 WebCore::AccessibilityRenderObject::addChildren() + 355
1   com.apple.WebCore                 0x00007fff9d108c52 WebCore::AccessibilityObject::updateChildrenIfNecessary() + 66
2   com.apple.WebCore                 0x00007fff9d10460d WebCore::AccessibilityObject::updateBackingStore() + 77
3   com.apple.WebCore                 0x00007fff9dea6dfd -[WebAccessibilityObjectWrapperBase updateObjectBackingStore] + 61
4   com.apple.WebCore                 0x00007fff9deb6ff7 -[WebAccessibilityObjectWrapper accessibilityIsIgnored] + 23
5   com.apple.AppKit                  0x00007fff93d5adbe NSAccessibilityEntryPointIsAccessibilityElement + 231
6   com.apple.AppKit                  0x00007fff93dc5101 NSAccessibilityPostNotificationForObservedElementWithUserInfo + 215
7   com.apple.WebCore                 0x00007fff9d18ee7f WebCore::AXObjectCache::postPlatformNotification(WebCore::AccessibilityObject*, 

&lt;rdar://problem/25350155&gt;</pre>
        </div>
      </p>
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