D26967: [kstyle] Use guarded pointers to store shadows

[Vlad Zahorodnii]

zzag created this revision.
Herald added a project: Plasma.
Herald added a subscriber: plasma-devel.
zzag requested review of this revision.

REVISION SUMMARY
  Since a KWindowShadow is a child of QWindow, we need to use a guarded
  pointer to store the shadow in order to prevent accessing or deleting
  dangling pointers in ShadowHelper::_shadows. It's quite possible that
  one could destroy the associated widget and with it the QWindow.

REPOSITORY
  R113 Oxygen Theme

BRANCH
  fix-crash

REVISION DETAIL
  https://phabricator.kde.org/D26967

AFFECTED FILES
  kstyle/oxygenshadowhelper.cpp
  kstyle/oxygenshadowhelper.h

To: zzag
Cc: plasma-devel, Orage, LeGast00n, The-Feren-OS-Dev, jraleigh, zachus, fbampaloukas, GB_2, ragreen, ZrenBot, ngraham, alexeymin, himcesjf, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, ahiemstra, mart
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