FPE on unknown adreess with ASAN during drag and drop

==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()))