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      <base href="https://bugs.webkit.org/" />
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        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - CrashTracer: [USER] com.apple.WebKit.WebContent at com.apple.WebCore: WebCore::selectorCanMatchPseudoElement + 50"
   href="https://bugs.webkit.org/show_bug.cgi?id=168463">168463</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>CrashTracer: [USER] com.apple.WebKit.WebContent at com.apple.WebCore: WebCore::selectorCanMatchPseudoElement + 50
          </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>Unspecified
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Unspecified
          </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>CSS
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>koivisto&#64;iki.fi
          </td>
        </tr></table>
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        <pre>Exception Type:        EXC_BAD_ACCESS (SIGSEGV)
Exception Codes:       KERN_INVALID_ADDRESS at 0x0000000000000040
Exception Note:        EXC_CORPSE_NOTIFY

Thread 0 Crashed ↩:: Dispatch queue: com.apple.main-thread
0   com.apple.WebCore                 0x00007fffbd238c42 WebCore::selectorCanMatchPseudoElement(WebCore::CSSSelector const&amp;) + 50
1   com.apple.WebCore                 0x00007fffbc390c0e WebCore::RuleData::RuleData(WebCore::StyleRule*, unsigned int, unsigned int, WebCore::AddRuleFlags) + 334
2   com.apple.WebCore                 0x00007fffbc39039e WebCore::RuleSet::addRule(WebCore::StyleRule*, unsigned int, WebCore::AddRuleFlags) + 62
3   com.apple.WebCore                 0x00007fffbd2395f1 WebCore::RuleSet::addChildRules(WTF::Vector&lt;WTF::RefPtr&lt;WebCore::StyleRuleBase&gt;, 0ul, WTF::CrashOnOverflow, 16ul&gt; const&amp;, WebCore::MediaQueryEvaluator const&amp;, WebCore::StyleResolver*, bool, bool, WebCore::AddRuleFlags) + 209
4   com.apple.WebCore                 0x00007fffbd23985b WebCore::RuleSet::addRulesFromSheet(WebCore::StyleSheetContents&amp;, WebCore::MediaQueryEvaluator const&amp;, WebCore::StyleResolver*) + 219
5   com.apple.WebCore                 0x00007fffbc81f001 WebCore::DocumentRuleSets::appendAuthorStyleSheets(WTF::Vector&lt;WTF::RefPtr&lt;WebCore::CSSStyleSheet&gt;, 0ul, WTF::CrashOnOverflow, 16ul&gt; const&amp;, WebCore::MediaQueryEvaluator*, WebCore::InspectorCSSOMWrappers&amp;, WebCore::StyleResolver*) + 97
6   com.apple.WebCore                 0x00007fffbd3582df WebCore::StyleResolver::appendAuthorStyleSheets(WTF::Vector&lt;WTF::RefPtr&lt;WebCore::CSSStyleSheet&gt;, 0ul, WTF::CrashOnOverflow, 16ul&gt; const&amp;) + 31
7   com.apple.WebCore                 0x00007fffbd365d89 WebCore::Style::Scope::resolver() + 121
8   com.apple.WebCore                 0x00007fffbd36e1f2 WebCore::Style::TreeResolver::resolve(WebCore::Style::Change) + 194
9   com.apple.WebCore                 0x00007fffbc7f10fe WebCore::Document::recalcStyle(WebCore::Style::Change) + 62</pre>
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