[Libreoffice-bugs] [Bug 121724] New: Assert in shutdown/cleanup in SdrObjectLifetimeWatchDog

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=121724

            Bug ID: 121724
           Summary: Assert in shutdown/cleanup in
                    SdrObjectLifetimeWatchDog
           Product: LibreOffice
           Version: 6.2.0.0.alpha0+
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Base
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: xiscofauli at libreoffice.org

This is a follow-up bug of bug 120151 based on
https://bugs.documentfoundation.org/show_bug.cgi?id=120151#c20

How to reproduce:
1. open attachment 145212 from bug 120151
2. create a report using the report builder wizard
3. save the changes. 
4. Edit the report by moving a field 
5. LO Base should crash.


Comments from Armin:

----------------------------------------

Objects created by OViewsWindow::BegDragObj_createInvisibleObjectAtPosition are
added to m_aBegDragTempList, but never get deleted. That list is just

filled in OViewsWindow::BegDragObj_createInvisibleObjectAtPosition

cleared and re-filled at OViewsWindow::BegDragObj

but never used for any sort of cleanup - looks like an error to me...

----------------------------------------

After change and close win and answering 'no save' in
OViewsWindow::~OViewsWindow() still all three D&D objects are in
m_aBegDragTempList. That list is <SdrObject*> so no destuct will happen.

The contained SdrObjects do not have a parent - seems as if they get removed
from page, at least they seem to be added to page when constructed (see
OViewsWindow::BegDragObj_createInvisibleObjectAtPosition - there,
rReportSection.getPage()->InsertObject(pNewObj) is called).

Thus it should be possible to find where these get removed from page again...?

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