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Details

Type: Bug
Resolution: Done
Priority: P1: Critical
Fix Version/s: 5.15.4, 6.0.4, 6.1.0 Beta3, 6.2.0 Alpha
Affects Version/s: 5.15.3
Component/s: Quick: Core Declarative QML
Labels:
- reported_by_support_standard
Environment:
iOS 14.4

Platform/s:

iOS/tvOS/watchOS
Commits:
b050d4867f68c3d35493221d65d343749504c988 (qt/qtbase/dev) 516316e9a24fc3a290ce220a9a6cda0af541ca4c (qt/qtbase/6.1) 0ffd09bc3038920e02fb8934fe885184064a116a (qt/tqtc-qtbase/tqtc/lts-5.15) 0dcf8c232f327ea50573c57ae5ba2d6d72b9e7fb (qt/qtbase/6.0)

Description

The app crashes with EXC_BAD_ACCESS when showing a new QQuickWindow after the first one is deleted.

It looks this is because it tries to set focus to the new window, but it still references the old window which has been deleted.

Here's the code to reproduce. Also the sample project is attached.

    QGuiApplication ga(argc, argv);
    {
        QQuickWindow view;
        view.show();
        QEventLoop loop;
        QTimer::singleShot(5000, &loop, &QEventLoop::quit);
        loop.exec();
    }
    QQuickWindow view;
    view.show();
    return ga.exec();