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    <body><span class="vcard"><a class="email" href="mailto:Thomas.Freitag@alfa.de" title="Thomas Freitag <Thomas.Freitag@alfa.de>"> <span class="fn">Thomas Freitag</span></a>
</span> changed
              <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - make qt4 frontend thread-safe"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=59927">bug 59927</a>
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            <th>What</th>
            <th>Removed</th>
            <th>Added</th>
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           <td style="text-align:right;">Attachment #73820 is obsolete</td>
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           <td>1
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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - make qt4 frontend thread-safe"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=59927#c13">Comment # 13</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - make qt4 frontend thread-safe"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=59927">bug 59927</a>
              from <span class="vcard"><a class="email" href="mailto:Thomas.Freitag@alfa.de" title="Thomas Freitag <Thomas.Freitag@alfa.de>"> <span class="fn">Thomas Freitag</span></a>
</span></b>
        <pre>Created <span class=""><a href="attachment.cgi?id=73834" name="attach_73834" title="move lock/unlock pairs in Annot to correct place">attachment 73834</a> <a href="attachment.cgi?id=73834&action=edit" title="move lock/unlock pairs in Annot to correct place">[details]</a></span> <a href='page.cgi?id=splinter.html&bug=59927&attachment=73834'>[review]</a>
move lock/unlock pairs in Annot to correct place

Sorry if wasting anybodys time: I made some additional tests with Adam's
test-case and encountered, that there are problems when drawing annots during
rendering pages: the draw routines doesn't use only local variables but
modifies also instance variables (appearBuf), and therefore definitely need to
be locked!

Here the patch which does it correctly!</pre>
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