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        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_UNCONFIRMED "
   title="UNCONFIRMED - Doing a few undo-redo cycle of deletion of a row with comment crashes Calc"
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=107869">107869</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Doing a few undo-redo cycle of deletion of a row with comment crashes Calc
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>LibreOffice
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>5.3.3.2 release
          </td>
        </tr>

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

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

        <tr>
          <th>Status</th>
          <td>UNCONFIRMED
          </td>
        </tr>

        <tr>
          <th>Keywords</th>
          <td>bibisected, bisected
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>critical
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Calc
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>libreoffice-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>baron@caesar.elte.hu
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>erack@redhat.com, xiscofauli@libreoffice.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>- Add a comment to an empty cell in Calc.
- Delete the row with comment.
- Undo-redo deletion a few times.

=> Calc crashes.

Reproduced using 5.3.3.2 / Windows 7 and 5.2.2.2 / Ubuntu 16.04.
Crash report:
<a href="http://crashreport.libreoffice.org/stats/crash_details/b7bbd14f-86c5-452b-b147-d20ab6cc6c22">http://crashreport.libreoffice.org/stats/crash_details/b7bbd14f-86c5-452b-b147-d20ab6cc6c22</a>

There is no crash in master branch, and it could be reverse-bibisected to the
following commit using repo bibisect-linux-64-5.4.
Eike, could you please backport the fix to 5.3?

<a href="https://cgit.freedesktop.org/libreoffice/core/commit/?id=06e427c24d75311c0ab79d2da586b961881db766">https://cgit.freedesktop.org/libreoffice/core/commit/?id=06e427c24d75311c0ab79d2da586b961881db766</a>
author          Eike Rathke <<a href="mailto:erack@redhat.com">erack@redhat.com</a>>  2017-04-12 21:24:34 (GMT)
committer       Eike Rathke <<a href="mailto:erack@redhat.com">erack@redhat.com</a>>  2017-04-12 22:48:47 (GMT)

"control deletion of SdrCaptionObj within ScCaptionPtr by refcount"</pre>
        </div>
      </p>


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