[Libreoffice-bugs] [Bug 137542] New: SIGSEGV on tab cycling focus to input field in a table cell

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=137542

            Bug ID: 137542
           Summary: SIGSEGV on tab cycling focus to input field in a table
                    cell
           Product: LibreOffice
           Version: 5.3.6.1 release
          Hardware: All
                OS: Linux (All)
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Writer
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: charkins at pobox.com

Created attachment 166437
  --> https://bugs.documentfoundation.org/attachment.cgi?id=166437&action=edit
minimum example to trigger bug

Attached is a minimum working example to demonstrate the crash. This appears to
be caused by an interaction between focus traversal of input fields and table
cells.

To trigger the crash, it appears these conditions must exist:

1. focus is in an input field (e.g. added via CTRL-F2)
2. the focused input field is inside of a table cell
3. text is selected within the focused input field
4. the next input field that would receive focus is also in a table cell
5. the next input field has content before the input field in the table cell

For example, click in the first text field once, which should focus the first
text field with the text (all spaces) highlighted. Next press TAB to cycle
focus to the second text field to crash.


The crash has been confirmed on at least these libreoffice versions:

    libreoffice-writer-5.3.6.1-24.el7.x86_64
    libreoffice-writer-6.0.6.1-20.el8.x86_64
    libreoffice-writer-6.4.6.2-3.fc32.x86_64

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