[konsole] [Bug 411741] Konsole crashes when rearranging split views

[Kurt Hindenburg]

https://bugs.kde.org/show_bug.cgi?id=411741

Kurt Hindenburg <kurt.hindenburg at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
      Latest Commit|                            |https://invent.kde.org/util
                   |                            |ities/konsole/commit/c33eba
                   |                            |8c60b99d00cd73c400d23b6f338
                   |                            |ef32a85
         Resolution|---                         |FIXED
   Version Fixed In|                            |20.12

--- Comment #3 from Kurt Hindenburg <kurt.hindenburg at gmail.com> ---
Git commit c33eba8c60b99d00cd73c400d23b6f338ef32a85 by Kurt Hindenburg, on
behalf of Carlos Alves.
Committed on 02/11/2020 at 18:14.
Pushed by hindenburg into branch 'master'.

Fix konsole crashes when rearranging split views

I'll try to explain here what I saw in this bug.
Following the BUG instructions, drag the terminal[2] and drop
(here the "drop event" starts)
-> the dragged terminal "ViewSplitter" become scheduled for deletion,
but it will only happens when it is in event loop.
-> And of course it is not in event loop yet, it is still the
"drop event" and it call the "addTerminalDisplay" to add the dragged
 terminal to a "ViewSplitter".
-> This makes count() counts this scheduled for deletion "ViewSplitter"
 and goes to the wrong "if".
-> It adds the "ViewSplitter" with the terminals into a
"marked for deletion" one, finishes the "drop event" and enters
event loop (a crash without a memleak! everything in the tab
 is properly deleted).
Related: bug 412596
FIXED-IN: 20.12

M  +4    -0    src/widgets/ViewSplitter.cpp

https://invent.kde.org/utilities/konsole/commit/c33eba8c60b99d00cd73c400d23b6f338ef32a85

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