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            <b><a class="bz_bug_link 
          bz_status_UNCONFIRMED "
   title="UNCONFIRMED - Most sites crash when updating..."
   href="https://bugs.webkit.org/show_bug.cgi?id=145105#c13">Comment # 13</a>
              on <a class="bz_bug_link 
          bz_status_UNCONFIRMED "
   title="UNCONFIRMED - Most sites crash when updating..."
   href="https://bugs.webkit.org/show_bug.cgi?id=145105">bug 145105</a>
              from <span class="vcard"><a class="email" href="mailto:jimoase&#64;mac.com" title="Jim Oase &lt;jimoase&#64;mac.com&gt;"> <span class="fn">Jim Oase</span></a>
</span></b>
        <pre>(In reply to <a href="show_bug.cgi?id=145105#c12">comment #12</a>)
<span class="quote">&gt; I misread the JSC crash - it's a different &quot;lookup&quot;. While I couldn't
&gt; reproduce, CC'ing JSC folks to have a look.
&gt; 
&gt; Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
&gt; 0   com.apple.JavaScriptCore              0x00000001159f689b
&gt; JSC::Interpreter::unwind(void*&amp;, JSC::ExecState*&amp;, JSC::JSValue&amp;) + 43
&gt; 1   com.apple.JavaScriptCore              0x0000000115a1dcab
&gt; JSC::genericUnwind(JSC::VM*, JSC::ExecState*, JSC::JSValue) + 91
&gt; 2   com.apple.JavaScriptCore              0x0000000115a466a5
&gt; lookupExceptionHandlerFromCallerFrame + 85
&gt; 3   ???                                   0x00003cad09646f10 0 + 66713884585744
&gt; 4   com.apple.JavaScriptCore              0x0000000115b63508 vmEntryToJavaScript +
&gt; 326</span >

The last few builds seem to fail with this problem more often.  They seem to happen when unattended.  I will include a copy of the crash log also

<a href="http://www.theblaze.com/stories/2015/05/21/army-dad-couldnt-make-daughters-kindergarten-graduation-so-these-surprise-visitors-showed-up-instead/">http://www.theblaze.com/stories/2015/05/21/army-dad-couldnt-make-daughters-kindergarten-graduation-so-these-surprise-visitors-showed-up-instead/</a></pre>
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