Review Request 128406: KCollapsibleGroupBox: Stop animation if still running in destructor

[Ragnar Thomsen]

-----------------------------------------------------------
This is an automatically generated e-mail. To reply, visit:
https://git.reviewboard.kde.org/r/128406/
-----------------------------------------------------------

(Updated July 9, 2016, 1:47 p.m.)


Review request for KDE Frameworks, David Edmundson and Elvis Angelaccio.


Changes
-------

Add a unittest which provokes the crash.


Repository: kwidgetsaddons


Description
-------

We are using KCollapsibleGroupBox in Ark and stumbled upon a segfault in an autotest involving this widget (see backtrace [here](https://paste.kde.org/pwcohd64z)). It looks like QTimeLine::stop() gets called after KCollapsibleGroupBox is deleted. This causes QTimeLine::stateChanged to get emitted which then calls KCollapsibleGroupBox::updateChildrenVisibility() that causes the crash.

To see the crash, clone the newAddDialog branch of Ark and run the autotests.

This diff calls QTimeLine::stop() in the KCollapsibleGroupBox dtor if it is running, before deleting the d pointer.


Diffs (updated)
-----

  autotests/CMakeLists.txt 4be2eaf 
  autotests/kcollapsiblegroupbox_test.h PRE-CREATION 
  autotests/kcollapsiblegroupbox_test.cpp PRE-CREATION 
  src/kcollapsiblegroupbox.cpp 0c3f866 

Diff: https://git.reviewboard.kde.org/r/128406/diff/


Testing
-------

The autotests in newAddDialog branch of Ark pass with this diff.


Thanks,

Ragnar Thomsen

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.kde.org/pipermail/kde-frameworks-devel/attachments/20160709/ba5b27a9/attachment-0001.html>