<html>
    <head>
      <base href="https://bugs.documentfoundation.org/">
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_UNCONFIRMED "
   title="UNCONFIRMED - Crash when deleting page break and undo"
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=139127">139127</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Crash when deleting page break and undo
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>7.2.0.0.alpha0+ Master
          </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>Severity</th>
          <td>normal
          </td>
        </tr>

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

        <tr>
          <th>Component</th>
          <td>Writer
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>libreoffice@nisz.hu
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>nemeth@numbertext.org
          </td>
        </tr>

        <tr>
          <th>Blocks</th>
          <td>137770
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="http://bugs.documentfoundation.org/attachment.cgi?id=168381" name="attach_168381" title="Example file from Writer">attachment 168381</a> <a href="http://bugs.documentfoundation.org/attachment.cgi?id=168381&action=edit" title="Example file from Writer">[details]</a></span>
Example file from Writer

Attached file was reduced from <span class=""><a href="http://bugs.documentfoundation.org/attachment.cgi?id=165697" name="attach_165697" title="Example file">attachment #165697</a> <a href="http://bugs.documentfoundation.org/attachment.cgi?id=165697&action=edit" title="Example file">[details]</a></span> of <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Crash swlo!SwRedlineData::SetSeqNo+0xf26: (track changes involved)"
   href="show_bug.cgi?id=136903">bug #136903</a>
When the letter on the second page is deleted along the page break, then
undone, Writer crashes in changes-on-margin mode, but not if this mode is
turned off.

Steps to reproduce:
    1. Open attached document in changes-on-margin
    2. Go to the second page and delete B and the page break
    3. Undo twice

Actual results:
Crash

Expected results:
No crash.

LibreOffice details:
Version: 7.2.0.0.alpha0+ (x64)
Build ID: e57665ea6f812aff9fc87073ce947f40a8b26e9d
CPU threads: 4; OS: Windows 6.3 Build 9600; UI render: default; VCL: win
Locale: hu-HU (hu_HU); UI: en-US
Calc: CL

Bibisect does not show much: in 7.1 it was enough to undo this once to get this
same crash signature, now it needs two. Sigh.

0x00007FFE8AAC48D6 (0x000000142B1193B0 0x00000014373C9D78 0x0000000000000000
0x0000000000000003), ?SetSeqNo@SwRedlineData@@QEAAXG@Z() + 0xF46 bytes(s)
0x00007FFE8AE7C17C (0x0000000000000201 0x0000000000000001 0x000000142AAACBB0
0x000000143B7C2F80), ??9SwRedlineData@@QEBA_NAEBV0@@Z() + 0xB9BC bytes(s)
0x00007FFE8AE6A6F2 (0x0000000000000001 0x000000141C44EC50 0x000000143BBAD340
0x0000000000000000), ?IsInWriterfilterImport@SwDoc@@QEBA_NXZ() + 0x2B72
bytes(s)
0x00007FFEA328B975 (0x000000143BBAD340 0x000000143B7C3160 0x0000000000000001
0x000000143B8E95E0),
?UndoWithContext@SfxListUndoAction@@UEAAXAEAVSfxUndoContext@@@Z() + 0x55
bytes(s)
0x00007FFEA328A4E5 (0x000000143B75DC48 0x0000001427179670 0x00000014374ABA70
0x000000143B7C3160), ?ImplUndo@SfxUndoManager@@AEAA_NPEAVSfxUndoContext@@@Z() +
0x145 bytes(s)
0x00007FFE8AE51B9B (0x000000142B1193B0 0x000000143B75DC00 0x0000000000000001
0x0000001427179670), ??0SwRewriter@@QEAA@$$QEAV0@@Z() + 0x4EAB bytes(s)
0x00007FFE8ABF8B5E (0x0000001427179670 0x0000001427179600 0x0000000000000000
0x0000000000000001), ?Undo@SwEditShell@@QEAAXG@Z() + 0x13E bytes(s)</pre>
        </div>
      </p>

        <div id="referenced">
          <hr style="border: 1px dashed #969696">
          <b>Referenced Bugs:</b>
          <ul>
              <li>
                [<a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [META] Tracked changes in margin"
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=137770">Bug 137770</a>] [META] Tracked changes in margin
              </li>
          </ul>
        </div>
        <br>

      <hr>
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      <ul>
          <li>You are the assignee for the bug.</li>
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