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    <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 - assertion, DocumentRedlineManager.cxx:246"
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=137772">137772</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>assertion, DocumentRedlineManager.cxx:246
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>7.1.0.0.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>lo_bugs@iseries-guru.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>This report arises from my poking at <a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED FIXED - ChangesInMargin: Crash on Undo of characters deleted by pressing Delete"
   href="show_bug.cgi?id=137684">bug 137684</a>, but I shall copy here or
link anything interesting.


STR

Once:

    (0) Tools > Options > "LibreOfficeDev Writer" > View > "Tracked
        deletions in margin" : checked

Per test

    (1) Run LO with command line options --norestore --nologo --writer

    (2) Type "the quick brown".  Document has "The quick brown"; left
        margin is empty.

    (3) Take menu options Edit > "Track Changes" > Record.  No visible
        result.

    (4) Type "<bs><bs><bs><bs><bs>".  Document has "The quick "; left
        margin is still empty.

        This is not what I expect; <a class="bz_bug_link 
          bz_status_UNCONFIRMED "
   title="UNCONFIRMED - deletions-in-margin lagging actual deletions"
   href="show_bug.cgi?id=137771">bug 137771</a> reports this.

    (5) Type "<ctrl>+Z".  Document has "The quick n"; the "n" is selected;
        left margin has in blue struckthrough "b".

    (6) Type "<ctrl>+Z".  Document has "The quick n"; nothing is selected;
        left margin still blue struckthrough "b".

    (7) Type "<ctrl>+Z".  Crash.


The terminal message, rewrapped:

    soffice.bin:
    /home/terry/lo_hacking/git/libo6/sw/source/core/doc
        /DocumentRedlineManager.cxx:246:
    void sw::UpdateFramesForRemoveDeleteRedline(SwDoc&, const SwPaM&):
    Assertion `pTableOrSectionNode' failed.


The backtrace
<<a href="http://bugs.documentfoundation.org/attachment.cgi?id=166711">http://bugs.documentfoundation.org/attachment.cgi?id=166711</a>> is from
a local build of commit 5219c6bd (2020-10-24), configured
    --with-vendor=Terrence Enger
    --with-jdk-home=/usr/lib/jvm/default-java
    --enable-split-debug
    --enable-gdb-index
    --enable-ld=gold
    --enable-option-checking=fatal
    #--enable-dbgutil
    --enable-debug
    --without-system-postgresql
    --without-myspell-dicts
    --with-extra-buildid
    --without-doxygen
    --with-external-tar=/home/terry/lo_hacking/git/src
    --without-package-format
built and running on debian-buster.</pre>
        </div>
      </p>


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