https://bugs.documentfoundation.org/show_bug.cgi?id=103788

            Bug ID: 103788
           Summary: Navigator crash on mouseover while quickly moving
                    between headings in document
           Product: LibreOffice
           Version: 4.4.0.3 release
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Writer
          Assignee: [email protected]
          Reporter: [email protected]

Description:
Quickly moving between different level headings in a Writer document using up
and down keys while simultaneously moving the mouse over the headings in
Navigator causes LibreOffice to crash in versions 4.4.0.3 to current 5.2.3.3.

Steps to Reproduce:
1. Create new Writer document. Ensure Navigator is visible.
2. Write any text on first line and change style to Heading 1.
3. Write any text on second line and change style to Heading 2.
4. Use the up and down arrow keys to quickly alternate the cursor between the
two lines, while simultaneously moving the mouse between the two headers in the
Navigator (without clicking).

See demonstration in attached gif file.

Actual Results:  
Immediate crash. 

See crash report in attached txt file and crash reports in
http://crashreport.libreoffice.org/stats/signature/SwContentTree::GetTabPos(SvTreeListEntry%20*,SvLBoxTab%20*)
for same issue.

Expected Results:
Not crash.


Reproducible: Always

User Profile Reset: Yes

Additional Info:
Reproduced on all versions from 4.4.0.3 to current 5.2.3.3. Could not reproduce
on version 4.3.7.2 or earlier. Reproduced on OS X (Mavericks and El Capitan)
and Linux (Ubuntu 16.04).

The crash reports in
http://crashreport.libreoffice.org/stats/signature/SwContentTree::GetTabPos(SvTreeListEntry%20*,SvLBoxTab%20*)
are for the same issue in Windows.


User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_4) AppleWebKit/537.36
(KHTML, like Gecko) Chrome/54.0.2840.71 Safari/537.36

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