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  1. Qt
  2. QTBUG-99056

FPE on unknown adreess with ASAN during drag and drop

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    • Icon: Bug Bug
    • Resolution: Duplicate
    • Icon: P2: Important P2: Important
    • None
    • 5.15
    • GUI: Drag and Drop
    • None
    • Linux/X11

      Performing Drag and Drop Operations on a QTreeWidget leads to ASAN errors

       

      ==30997==ERROR: AddressSanitizer: FPE on unknown address 0x7f625369386a (pc 0x7f625369386a bp 0x612000001fc0 sp 0x7ffc49917db0 T0)
#0 0x7f6253693869 in QBasicDrag::startDrag() qt/qtbase/src/gui/kernel/qsimpledrag.cpp:228                                        
#1 0x7f624df86313 in QXcbDrag::startDrag() qt/qtbase/src/plugins/platforms/xcb/qxcbdrag.cpp:201 
#2 0x7f625369270f in QBasicDrag::drag(QDrag*) qt/qtbase/src/gui/kernel/qsimpledrag.cpp:204 
#3 0x7f625368fd36 in QDragManager::drag(QDrag*) qt/qtbase/src/gui/kernel/qdnd.cpp:117

        

      void QBasicDrag::startDrag()
{ 
  QPoint pos;
  #ifndef QT_NO_CURSOR
  pos = QCursor::pos();
228:  if (pos.x() == int(qInf()))
  

      The cast to int is causing the issue. Don't know what should be tested here, maybe pos.isNull()?

       

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            srutledg Shawn Rutledge
            j.kreuzberger Joerg Kreuzberger
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              Created:
              Updated:
              Resolved:

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