Behavior and Source incompatible changes in Qt that affect Creator

This is a collection of references to incompatible change in Qt between major release that required updates to Qt Creator source.

Removal of macro

QT_MODULE define

Broke with: https://codereview.qt-project.org/c/qt/qtbase/+/428258
Fix for Creator 7:
https://codereview.qt-project.org/c/qt-creator/qt-creator/+/449205

Intentional SiC change

for QList iterator

Broke with: https://codereview.qt-project.org/c/qt/qtbase/+/376158
Fix for Creator 10:
https://codereview.qt-project.org/c/qt-creator/qt-creator/+/453161
https://codereview.qt-project.org/c/qt-creator/qt-creator/+/453164
https://codereview.qt-project.org/c/qt-creator/qt-creator/+/453505
Fix for Creator 9:
https://codereview.qt-project.org/c/qt-creator/qt-creator/+/453569
https://codereview.qt-project.org/c/qt-creator/qt-creator/+/453568

Removal of QVariant constructor

Broke with: https://codereview.qt-project.org/c/qt/qtbase/+/401717
Fix for Creator 6: ...

Adding rvalue overload to QVariant::fromValue<...>

Fix for Creator 11: https://codereview.qt-project.org/c/qt-creator/qt-creator/+/481932

Connects no more possible on incomplete types

Broke with: ???
Fix for Creator 10: https://codereview.qt-project.org/c/qt-creator/qt-creator/+/476442
Fix for Creator 11: https://codereview.qt-project.org/c/qt-creator/qt-creator/+/476439

Allow "auto" for QStringBuilder results

Broke with: https://codereview.qt-project.org/c/qt/qtbase/+/479775
Fix for Qt Tools: https://codereview.qt-project.org/c/qt/qttools/+/484956
Fix for Creator 11: https://codereview.qt-project.org/c/qt-creator/qt-creator/+/487280

Contextless QObject::connect are not permitted

Fix for Creator 12:  https://codereview.qt-project.org/c/qt-creator/qt-creator/+/492319

Permitted removal of transitive #includes

Broke with: https://codereview.qt-project.org/c/qt/qtbase/+/509739
Fix for Creator 12:  https://codereview.qt-project.org/c/qt/qtbase/+/509739 

Intentional deprecations

Remove QCryptographicHash::addData(const char *data, qsizetype length);  overload

Introduced with qtbase de18b3ff370543b5b99bd068b871a2cd677cf9f3
Fix for Creator 11: https://codereview.qt-project.org/c/qt-creator/qt-creator/+/481936

Intentional behavior changes

Previously accepted out-of-bounds handling for string reads

Introduced: https://bugreports.qt.io/browse/QTBUG-111775
Fix for Qt: 811b7c2f7 (dev), 5b954c016 (6.5)

Change of return values from int to qsizetype results in wrongly deserialized values from QDataStream

Introduced: https://codereview.qt-project.org/c/qt/qtbase/+/305108
Resulted in QTCREATORBUG-30469
Fix for Qt Creator 13: https://codereview.qt-project.org/c/qt-creator/qt-creator/+/547207

Replacing std::optional<QPixmap/QPicture> in QLabel private shortens possible lifetime and makes construction and destruction more expensive

Introduced: https://codereview.qt-project.org/c/qt/qtbase/+/570063
One related Qt Creator change: https://codereview.qt-project.org/c/qt-creator/qt-creator/+/580621

Unintentional behavior change during normal work

Behavioral change in QTextLine

https://bugreports.qt.io/browse/QTBUG-109474
Broke with: https://codereview.qt-project.org/c/qt/qtbase/+/435080
Fix for Qt 6.6: https://codereview.qt-project.org/c/qt/qtbase/+/452160
Fix for Qt 6.5: https://codereview.qt-project.org/c/qt/qtbase/+/453906

Regression in QTabBar

https://bugreports.qt.io/browse/QTBUG-114204
Broke with: https://codereview.qt-project.org/c/qt/qtbase/+/475958
Fix for Qt: https://codereview.qt-project.org/c/qt/qtbase/+/481811

Unintentional behavior changes or crashe while micro-optimizing

Introduction of views (read-past end) #1:

Broke with: https://codereview.qt-project.org/c/qt/qtbase/+/401609
Fixed in Qt: https://codereview.qt-project.org/c/qt/qtbase/+/415210

Introduction of views (read-past end) #2:

https://bugreports.qt.io/browse/QTBUG-119000
Broke with: https://codereview.qt-project.org/c/qt/qtbase/+/510464

"Ok" changes:

In private header

Broke with: https://codereview.qt-project.org/c/qt/qtquick3d/+/406756
Fix https://codereview.qt-project.org/c/qt-creator/qt-creator/+/414157