#include <QtGui/QImage>

int main(int argc, char *argv[])
{
    QImage src("../GIL_with_Qt/images_00/lena/lena.jpg");
    src = src.convertToFormat(QImage::Format_Indexed8);
    QImage dst(src.size(), src.format());

    dst.save("E:/lena/lena_Format_Indexed8.jpg"); //this line will cause the program crash

    return 0;
}