This is a (logical) C++ aspect, not a Qt thing: non-constant pointers call non-contant methods in priority.
Philippe On Thu, 20 Sep 2018 11:02:44 +0200 Michal Lazo <xlazo...@gmail.com> wrote: I still don't see reason why compiler don't call const variants to access raw pointer > http://code.qt.io/cgit/qt/qtbase.git/tree/src/corelib/tools/qshareddata.h#n76 > > > > for example here(QTextCursor) > http://code.qt.io/cgit/qt/qtbase.git/tree/src/gui/text/qtextcursor.cpp#n1151 > > I would expect calling const variant and I think that author of that lines > expect same. > > > > > On Thu, Sep 20, 2018 at 10:55 AM Philippe <philw...@gmail.com> wrote: > >> You just have to change your line: >> >> Car * carPtr = &car; >> >> with >> >> const Car * carPtr = &car; >> >> Philippe >> >> On Thu, 20 Sep 2018 10:40:01 +0200 >> Michal Lazo <xlazo...@gmail.com> wrote: >> >>> >>> Hello >>> example >>> https://pastebin.com/xL9yWhKe >>> >>> >>> >>> I never used QSharedDataPointer in my code but is is heavily used in Qt >>> My problem is that I found that QSharedDataPointer prefer non const >>> operator for access raw pointer to object instead of const variant. >>> And at the end non const variant call detach() = cloning object >>> Look at my example and plz debug if conditions >>> >>> >>> I use compiler MSVC 2015, 2017 >>> >>> >>> My problem is that for example QTextCursor use this constructions and it >>> heavily call detach. And simple call const variant of method should fix >>> this. >>> >>> >>> Anybody can explain this behaviour? >>> >>> >>> >>> >>> >>> >>> _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
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