Review Request 128760: Fix crash when using QProxyStyle and exit()

[Peter Wu]

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https://git.reviewboard.kde.org/r/128760/
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Review request for Plasma, David Edmundson, David Faure, and Hugo Pereira Da Costa.


Bugs: 356940
    https://bugs.kde.org/show_bug.cgi?id=356940


Repository: breeze


Description
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Do not delete all style instances which we create, restrict ourselves to
the first instance. I have no idea if the delete hack is still needed,
but let's keep it until it is certain that it is unneeded.


Diffs
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  kstyle/breezestyleplugin.cpp 083100e 

Diff: https://git.reviewboard.kde.org/r/128760/diff/


Testing
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Used "Testcase (with ASAN)" from bug https://bugs.kde.org/show_bug.cgi?id=356940. Run directly, no more crashes. Double-checked with a breakpoint on Breeze::StylePlugin::create that the second instance is called through QProxyStyle.


Thanks,

Peter Wu

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