QPixmap :: fromImage（）在QX11PixmapData中给出了分段错误

QVector<QRgb> colorTable(256);
 QImage *qi = new QImage(lutData, imwidth,imheight, QImage::Format_Indexed8);

 while (index < 256)
 {
         colorTable.replace(index, qRgb(2552,255, 255));
         index++;
 }
 qi->setColorTable(colorTable);


 QPixmap p(QPixmap::fromImage(*qi,Qt::AutoColor));

QImage::QImage ( const uchar * data, int width, int height, Format format )

QImage::QImage ( uchar * data, int width, int height, int bytesPerLine, Format format )

QImage *qi = new QImage(lutData, imwidth, imheight, imwidth, QImage::Format_Indexed8);