20.06.2020, 21:34, "Alberto Mardegan" <ma...@users.sourceforge.net>: > Hi all! > A couple of days ago a bug was filed against a project of mine, which > has been built with -fno-rtti since Qt4 times: > > https://bugzilla.opensuse.org/show_bug.cgi?id=1172904 > > The bug, it appears, is a crash in QProcess due to the use of typeid(), > which was introduced in Qt 5.15: > > https://code.qt.io/cgit/qt/qtbase.git/commit/?h=5.15&id=97645478de3ceffce11f58eab140c4c775e48be5 > > I think I missed an announcement about Qt applications having to use > RTTI; on the opposite, I thought that the whole point of QMetaObject was > not to require RTTI support; has this changed? > > Anyway, were I to submit a patch replacing typeid() with something which > does not require RTTI ("q->metaObject() == QProcess::staticMetaObject()" > would work, I guess? Or maybe even comparing q->className()?), would > that be accepted?
I think it should use qobject_cast. Comparing metaObject() with staticMetaObject() is wrong because it would fail even for QProcess. OTOH, using qobject_cast would handle classes derived from QProcess correctly, unlike code with typeid(). -- Regards, Konstantin _______________________________________________ Development mailing list Development@qt-project.org https://lists.qt-project.org/listinfo/development
