Control: reassign -1 libqt5widgets5 5.11.3+dfsg1-4 Control: fixed -1 qtbase-opensource-src/5.12.4+dfsg-1
Hi Danny! On Tue, Aug 27, 2019 at 04:06:07PM +0000, Danny Milosavljevic wrote: > there is a segmentation fault problem with python3-qt5 and/or qt5 when > switching between image and text with html tags. > > To reproduce, > > (1) Use Debian 10 live iso (or any Debian 10; it happened on a finished > installation as well) > (2) Invoke: sudo apt-get update > (3) Invoke: sudo apt-get install python3-pyqt5 > (4) Invoke: cp > /usr/share/icons/Adwaita/48x48/status/network-wired-disconnected.png . > (or any other png) > (5) Save the text below as "a.py" > (6) Invoke: QT_QPA_PLATFORM=offscreen python3 a.py 1 > (7) Wait for 5 seconds > (8) See the segmentation fault > > It's very very reproducible for me. I can reproduce it with the attached C++ source. So it is a bug in Qt, not in PyQt. Reassigning accordingly. Also I can reproduce it with Qt 5.11.3 but not with 5.12.4 from experimental. Looking at upstream changes, I found [1] which most probably fixed this. So it will be fixed in Sid as soon as we upgrade to 5.12. Do you want a fix in Buster as well? [1]: https://codereview.qt-project.org/c/qt/qtbase/+/242929 -- Dmitry Shachnev
#include <QtCore/QString>
#include <QtCore/QTimer>
#include <QtCore/QVariant>
#include <QtWidgets/QApplication>
#include <QtWidgets/QLabel>
#include <QtWidgets/QWidget>
static const char *styleSheet =
"QLabel {"
" padding: 2px;"
" min-width: 84px;"
" min-height: 84px;"
" }"
"QLabel[state=\"image\"]{"
" background-color: orange;"
" qproperty-text: \"Image\";"
"}"
"QLabel[state=\"text\"]{"
" background-color: #eeeeee;"
" qproperty-text: \"<table><tr><td>This is a</td></tr><tr><td>Text</td></tr></table>\";"
" }";
int main(int argc, char **argv) {
QApplication app(argc, argv);
QWidget widget;
QLabel topLabel(&widget);
widget.setGeometry(100, 100, 100, 100);
QString labelProp = QStringLiteral("text");
QTimer flipTimer(&widget);
flipTimer.setInterval(1000);
QObject::connect(&flipTimer, &QTimer::timeout, [&]() {
if (labelProp == QStringLiteral("text"))
labelProp = QStringLiteral("image");
else
labelProp = QStringLiteral("text");
topLabel.setProperty("state", QVariant(labelProp));
widget.setStyleSheet(styleSheet);
});
flipTimer.start();
widget.show();
return app.exec();
}
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