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  1. Qt
  2. QTBUG-122321

qmltc: WebEngineView with anchors causes assertion at component creation

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Details

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

    Description

      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")

      Attachments

        1. Templates.qml
          0.1 kB
          Fabian Kosmale
        2. webengine_qmltc.zip
          1 kB
          Sze Howe Koh

        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-122233 Type compiler unable to use components from imported modules

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Reported

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-128895 [Reg 6.2 -> 6.5] QtQuick.Templates causes crashes if QtQuick types are not registered

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
          • Closed
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          Activity

            People

              ulherman Ulf Hermann
              skoh-qt Sze Howe Koh
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              Dates

                Created:
                Updated:
                Resolved:

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