Review Request 122184: Remove seemingly outdated hack deleting the currently used QStyle at teardown

David Faure faure at kde.org
Thu Jan 22 06:46:43 UTC 2015


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Ship it!


Looks good to me, although it sounds like something Qt should be taking care of....

- David Faure


On Jan. 21, 2015, 4:57 p.m., David Edmundson wrote:
> 
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> This is an automatically generated e-mail. To reply, visit:
> https://git.reviewboard.kde.org/r/122184/
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> 
> (Updated Jan. 21, 2015, 4:57 p.m.)
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> 
> Review request for Plasma, David Faure and Hugo Pereira Da Costa.
> 
> 
> Repository: oxygen
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> 
> Description
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> According to the comment we need to delete the qstyle object before the
> plugin if the application exits with exit(). A small test showed this is
> no longer the case.
> 
> More importantly this patch fixes a crash we see when styles were switched at
> runtime and the app uses exit().
> 
> Because Breeze has a similar delete line the first would run deleting
> the style object but leaving a dangling pointer, the second would run
> and crash.
> 
> Even if they only deleted their own style, both need to check the active style which means the second one is always accessing a dangling pointer.
> 
> ----
> 
> A similar approach needs to go into Breeze too. I shall copy that if this gets in.
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> 
> Diffs
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>   kstyle/oxygenstyleplugin.cpp 409ec13 
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> Diff: https://git.reviewboard.kde.org/r/122184/diff/
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> 
> Testing
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> 
> Wrote a unit test that calls exit(0) on button press. This used to crash if we changed theme and then pressed the button. Now it no longer crashes ever.
> 
> Checked that kglobalaccel5 no longer crashes on exit after changing Breeze->Oxygen and does not crash after changing from Oxygen->Breeze
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> 
> Thanks,
> 
> David Edmundson
> 
>

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