The program crashes when I try to set qserialport instance setting, such as setBaudRate. it causes segmentation fault.
Qt Code: 
  1. #include "mainwindow.h"
  2. #include <QApplication>
  3.  
  4. #include <QtCore/QCoreApplication>
  5. #include <QtCore/QDebug>
  6.  
  7. #include <QtSerialPort/QSerialPort>
  8. #include <QtSerialPort/QSerialPortInfo>
  9.  
  10. QT_USE_NAMESPACE
  11.  
  12. int main(int argc, char *argv[])
  13. {
  14.     QApplication a(argc, argv);
  15.     MainWindow w;
  16.     w.show();
  17.  
  18.  
  19.         QSerialPort serial;
  20.  
  21.         QString path;
  22.  
  23.         path.append("/dev/ttyS0");
  24.  
  25.         serial.setBaudRate(QSerialPort::Baud9600);
  26.  
  27.         serial.close();
  28.  
  29.     return a.exec();
  30. }
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As my system is Linux, should I use a posix version of the function to open port!
like:
Qt Code: 
  1. posix_openpt()
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i would thank if run the code in your system n see if you get the same segmentation fault when setting port settings.