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  1. Qt
  2. QTBUG-122321

qmltc: WebEngineView with anchors causes assertion at component creation

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    • 332170d46 (dev), 879eb17d7 (6.7)

      Code

      // Main.qml
import QtWebEngine

WebEngineView {
    anchors.left: undefined // or anchors.fill: parent
}

      // main.cpp
#include <main.h>

int main(int argc, char **argv) {
    QtWebEngineQuick::initialize();
    QGuiApplication app{argc, argv};

    QQmlEngine engine;
    auto main = new App::Main(&engine); // Crashes here

    return app.exec();
}

       

      Outcomes

      Qt 6.6.1 gives

      ASSERT: "unit" in file C:\Users\qt\work\qt\qtdeclarative\src\qml\qml\qqmlengine.cpp, line 2046

       

      Notes

      • The assertion does not occur if we have no anchors in Main.qml
      • The assertion does not occur if we replace WebEngineView with Item
      • qmltc cannot compile this project in Qt 6.5.4 because of problems with QtWebChannel\plugins.qmltypes ("Meta object revision and export version differ")

        1. Templates.qml
          0.1 kB
        2. webengine_qmltc.zip
          1 kB
        For Gerrit Dashboard: QTBUG-122321
        # Subject Branch Project Status CR V
        549798,7 Engine: Handle grouped property bindings of non-registered types dev qt/qtdeclarative Status: MERGED +2 0
        551557,2 Engine: Handle grouped property bindings of non-registered types 6.7 qt/qtdeclarative Status: MERGED +2 0

            ulherman Ulf Hermann
            skoh-qt Sze Howe Koh
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              Created:
              Updated:
              Resolved:

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