segfault when using QtCharts

[joaoantoniocardoso]

Hi!

I was running qhot main.qml in my project and everything was going fine until I started to work with QtCharts 2.3:

> qhot main.qml        
qrc:/main.qml:104:5: QML Connections: Implicitly defined onFoo properties in Connections are deprecated. Use this syntax instead: function onFoo(<arguments>) { ... }
[1]    537113 segmentation fault (core dumped)  qhot main.qml

Here is a minimal code example to reproduce the bug:

import QtQuick 2.15
import QtCharts 2.3

Rectangle {
    color: "red"
    ChartView { }
}

Then it runs if I comment out ChartView { }.

Besides that, I can normally run my application binary.

I am using Arch Linux (updated) with the current qt5 package group.

Thanks!

[emimvi]

Also hit this issues, both in qhot and my own app. Seems like QtCharts uses QWidgets internally, and thus needs a full QApplication instead of QGuiApplication. Patching qhot to use QApplication and requiring the Widgets component in the CMakeLists works for me.

[joaoantoniocardoso]

Also hit this issues, both in qhot and my own app. Seems like QtCharts uses QWidgets internally, and thus needs a full QApplication instead of QGuiApplication. Patching qhot to use QApplication and requiring the Widgets component in the CMakeLists works for me.

Could you make a draft/PR with those changes?

[emimvi]

@joaoantoniocardoso Not sure if you got a notification for it, but I added a PR.