The property observer reference used during binding evaluation can
become invalidated as the container used to maintain the
the observer would invalidate the existing observers during its
resize, leading to referring to invalid memory.
Recognize that we do not need to store the observer, but only its
binding - the observer itself is not used later.
Therefore, change the PendingBindingObserverList to become a list of
QPropertyBindingPrivatePtr to avoid the issue.
Fixes: QTBUG-127596
Original-patch-by: Santhosh Kumar <santhosh.kumar.selvaraj@qt.io>
Pick-to: 6.5 6.2
Change-Id: I8c97721ca563083d6280194175f8a915dac2ff04
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
Reviewed-by: Santhosh Kumar <santhosh.kumar.selvaraj@qt.io>
(cherry picked from commit 275202215376238bf414d5008d3c727085e58a4c)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
be974c4855