Help! Why QSGDefaultPainterNode causes memoryleak instance unsigned char[]

Darry

my code


void QmlCustomPlot::paint( QPainter* painter )
{
    if (m_plot)
    {
        QPixmap picture( boundingRect().size().toSize() );
        picture.fill(Qt::transparent);
        QCPPainter qcpPainter( &picture );
        m_plot->toPainter( &qcpPainter);
        painter->drawPixmap( QPoint(), picture );
    }
}

leak stack
kernel32.dll!0x7ff87072e8d7()
Qt6Guid.dll!QImageData::create() - 行 147
Qt6Guid.dll!QImage::QImage() - 行 822
Qt6Guid.dll!QImage::QImage() - 行 807
Qt6Guid.dll!QImage::copy() - 行 1226
Qt6Guid.dll!QImage::detach() - 行 1131
Qt6Guid.dll!QPainter::begin() - 行 1714
Qt6Quickd.dll!QSGDefaultPainterNode::paint() - 行 79
Qt6Quickd.dll!QSGDefaultPainterNode::update() - 行 136
Qt6Quickd.dll!QQuickPaintedItem::updatePaintNode() - 行 554
Qt6Quickd.dll!QQuickWindowPrivate::updateDirtyNode() - 行 2271
Qt6Quickd.dll!QQuickWindowPrivate::updateDirtyNodes() - 行 2014
Qt6Quickd.dll!QQuickWindowPrivate::syncSceneGraph() - 行 568
Qt6Quickd.dll!QSGRenderThread::sync() - 行 554
Qt6Quickd.dll!QSGRenderThread::syncAndRender() - 行 719
Qt6Quickd.dll!QSGRenderThread::run() - 行 979
Qt6Cored.dll!QThreadPrivate::start() - 行 273

{C++}(unsigned char*)0X27A0730C070,1115808 = 0x0000027a0730c070 "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0...

Christian Ehrlicher

How did you find this? Please use a proper tool for this and provide a minimal, compilable example to reproduce the problem. The stack does not match to your code at all.

Darry

@Christian-Ehrlicher

Christian Ehrlicher

This tells me nothing - we need a minimal, compilable example to reproduce the problem and you have to use a proper memory checking tool.