Qt5 issue

[Drusy]

Hi,

I repport a crash with the Qt5 version of interaction-example. It happen when the first curve goes out of the screen by the right (just slide the curves to the right until it crashes)

Hope you can help.

Regards

[Gui13]

I second that. I encounter the same issue on my side: you just have to slide until the curve is not visible an let go of the mouse button.

I have no debugger on my windows installation, so no means of debugging...

[Gui13]

For those interested, I got a stacktrace:

0   QMapNodeBase::nextNode  qmap.cpp    58  0x6402edb2  
1   QMapNode<double,QCPData>::nextNode  qmap.h  117 0xf3fc60    
2   QMap<double,QCPData>::const_iterator::operator++    qmap.h  476 0xf3eb91    
3   QMap<double,QCPData>::const_iterator::operator+ qmap.h  494 0xf3ebdf    
4   QCPGraph::getVisibleDataBounds  qcustomplot.cpp 1677    0xf0ad33    
5   QCPGraph::getLinePlotData   qcustomplot.cpp 1051    0xf08aef    
6   QCPGraph::getPlotData   qcustomplot.cpp 981 0xf08940    
7   QCPGraph::draw  qcustomplot.cpp 905 0xf0848c    
8   QCustomPlot::draw   qcustomplot.cpp 8079    0xf1bfc0    
9   QCustomPlot::replot qcustomplot.cpp 7242    0xf19dd8    
10  QCustomPlot::mouseMoveEvent qcustomplot.cpp 7696    0xf1ae56    
11  QWidget::event  qwidget.cpp 7827    0x6a3ca01d  
12  QApplicationPrivate::notify_helper  qapplication.cpp    3394    0x6a3828ce  
13  QApplication::notify    qapplication.cpp    2958    0x6a38093c  
14  QCoreApplication::notifyInternal    qcoreapplication.cpp    767 0x642174c4  
15  QCoreApplication::sendSpontaneousEvent  qcoreapplication.h  206 0x64327198  
16  QApplicationPrivate::sendMouseEvent qapplication.cpp    2465    0x6a37fa65  
17  QWidgetWindow::handleMouseEvent qwidgetwindow.cpp   387 0x6a3fdbc0  
18  QWidgetWindow::event    qwidgetwindow.cpp   139 0x6a3fd134  
19  QApplicationPrivate::notify_helper  qapplication.cpp    3394    0x6a3828ce  
... <plus>              

AND a screenshot:

[dbzhang800]

Hi all,

Thanks for your report, the reason is that:

(QMap::begin()-1)+1 which works under Qt4, but not Qt5.

This is not the fault of Qt, as the manual says that calling const_iterator::operator--() on QMap::begin() leads to undefined results.

I will fix it ASAP.