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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - segfault in cairo-polygon-intersect.c: active_edges()"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=59098">59098</a>
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>chris@chris-wilson.co.uk
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>segfault in cairo-polygon-intersect.c: active_edges()
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>cairo-bugs@cairographics.org
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

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

        <tr>
          <th>OS</th>
          <td>Linux (All)
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>glin@suse.com
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>x86-64 (AMD64)
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>1.12.2
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>general
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>cairo
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=72609" name="attach_72609" title="gdb backtrace">attachment 72609</a> <a href="attachment.cgi?id=72609&action=edit" title="gdb backtrace">[details]</a></span>
gdb backtrace

OS: openSUSE 12.2

When I used evince to open a pdf calendar, evince crashed immediately. The
backtrace showed it crashed in cairo-polygon-intersect.c: active_edges():

if unlikely ((right->deferred.other))

"right" was NULL, and it caused segfault.</pre>
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