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  1. Qt
  2. QTBUG-99056

FPE on unknown adreess with ASAN during drag and drop

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    Details

    • Type: Bug
    • Status: Reported
    • Priority: P2: Important
    • Resolution: Unresolved
    • Affects Version/s: 5.15
    • Fix Version/s: None
    • Component/s: GUI: Drag and Drop
    • Labels:
      None
    • Platform/s:
      Linux/X11

      Description

      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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              Assignee:
              paeglis Gatis Paeglis
              Reporter:
              j.kreuzberger Joerg Kreuzberger
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                Created:
                Updated:

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