gistfile1.txt

/home/andrew/serenity/Userland/Libraries/LibJS/Heap/GCPtr.h:187:29: runtime error: reference binding to null pointer of type 'Web::DOM::Document'
    #0 0x556605e195eb in operator* /home/andrew/serenity/Userland/Libraries/LibJS/Heap/GCPtr.h:187:22
    #1 0x556605e195eb in Web::HTML::Window::associated_document() /home/andrew/serenity/Userland/Libraries/LibWeb/HTML/Window.h:48:51
    #2 0x7f775472ab83 in Web::HTML::queue_global_task(Web::HTML::Task::Source, JS::Object&, AK::Function<void ()>) /home/andrew/serenity/Userland/Libraries/LibWeb/HTML/EventLoop/EventLoop.cpp:250:35
    #3 0x7f77540b5419 in Web::HTML::BrowsingContext::set_system_visibility_state(Web::HTML::VisibilityState) /home/andrew/serenity/Userland/Libraries/LibWeb/HTML/BrowsingContext.cpp:1296:5
    #4 0x7f7751f6f0e7 in QWidget::event(QEvent*) (/lib/x86_64-linux-gnu/libQt6Widgets.so.6+0x1d90e7) (BuildId: 1b8a809c3e427a6488ddc759bd04d21b53094660)
    #5 0x7f775200b405 in QFrame::event(QEvent*) (/lib/x86_64-linux-gnu/libQt6Widgets.so.6+0x275405) (BuildId: 1b8a809c3e427a6488ddc759bd04d21b53094660)
    #6 0x7f7751f15d35 in QApplicationPrivate::notify_helper(QObject*, QEvent*) (/lib/x86_64-linux-gnu/libQt6Widgets.so.6+0x17fd35) (BuildId: 1b8a809c3e427a6488ddc759bd04d21b53094660)
    #7 0x7f7750ffeeb7 in QCoreApplication::notifyInternal2(QObject*, QEvent*) (/lib/x86_64-linux-gnu/libQt6Core.so.6+0x153eb7) (BuildId: b920731a3b52e4a80a3449170d6d0cad2c366c7d)
    #8 0x7f7751f6bb16 in QWidgetPrivate::show_helper() (/lib/x86_64-linux-gnu/libQt6Widgets.so.6+0x1d5b16) (BuildId: 1b8a809c3e427a6488ddc759bd04d21b53094660)
    #9 0x7f7751f6ecaa in QWidgetPrivate::setVisible(bool) (/lib/x86_64-linux-gnu/libQt6Widgets.so.6+0x1d8caa) (BuildId: 1b8a809c3e427a6488ddc759bd04d21b53094660)
    #10 0x7f7751f6ba37 in QWidgetPrivate::showChildren(bool) (/lib/x86_64-linux-gnu/libQt6Widgets.so.6+0x1d5a37) (BuildId: 1b8a809c3e427a6488ddc759bd04d21b53094660)
    #11 0x7f7751f6baf2 in QWidgetPrivate::show_helper() (/lib/x86_64-linux-gnu/libQt6Widgets.so.6+0x1d5af2) (BuildId: 1b8a809c3e427a6488ddc759bd04d21b53094660)
    #12 0x7f7751f6ba29 in QWidgetPrivate::showChildren(bool) (/lib/x86_64-linux-gnu/libQt6Widgets.so.6+0x1d5a29) (BuildId: 1b8a809c3e427a6488ddc759bd04d21b53094660)
    #13 0x7f7751f6baf2 in QWidgetPrivate::show_helper() (/lib/x86_64-linux-gnu/libQt6Widgets.so.6+0x1d5af2) (BuildId: 1b8a809c3e427a6488ddc759bd04d21b53094660)
    #14 0x7f7751f6ecaa in QWidgetPrivate::setVisible(bool) (/lib/x86_64-linux-gnu/libQt6Widgets.so.6+0x1d8caa) (BuildId: 1b8a809c3e427a6488ddc759bd04d21b53094660)
    #15 0x7f7751f6ba37 in QWidgetPrivate::showChildren(bool) (/lib/x86_64-linux-gnu/libQt6Widgets.so.6+0x1d5a37) (BuildId: 1b8a809c3e427a6488ddc759bd04d21b53094660)
    #16 0x7f7751f6baf2 in QWidgetPrivate::show_helper() (/lib/x86_64-linux-gnu/libQt6Widgets.so.6+0x1d5af2) (BuildId: 1b8a809c3e427a6488ddc759bd04d21b53094660)
    #17 0x7f7751f6ecaa in QWidgetPrivate::setVisible(bool) (/lib/x86_64-linux-gnu/libQt6Widgets.so.6+0x1d8caa) (BuildId: 1b8a809c3e427a6488ddc759bd04d21b53094660)
    #18 0x7f7751f6ba37 in QWidgetPrivate::showChildren(bool) (/lib/x86_64-linux-gnu/libQt6Widgets.so.6+0x1d5a37) (BuildId: 1b8a809c3e427a6488ddc759bd04d21b53094660)
    #19 0x7f7751f6baf2 in QWidgetPrivate::show_helper() (/lib/x86_64-linux-gnu/libQt6Widgets.so.6+0x1d5af2) (BuildId: 1b8a809c3e427a6488ddc759bd04d21b53094660)
    #20 0x7f7751f6ecaa in QWidgetPrivate::setVisible(bool) (/lib/x86_64-linux-gnu/libQt6Widgets.so.6+0x1d8caa) (BuildId: 1b8a809c3e427a6488ddc759bd04d21b53094660)
    #21 0x556605e541c5 in serenity_main(Main::Arguments) /home/andrew/ladybird/main.cpp:36:12
    #22 0x7f775251efb3 in main /home/andrew/serenity/Userland/Libraries/LibMain/Main.cpp:39:19
    #23 0x7f774c7e5d8f in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16
    #24 0x7f774c7e5e3f in __libc_start_main csu/../csu/libc-start.c:392:3
    #25 0x556605d28a54 in _start (/home/andrew/ladybird/build/ladybird+0xe0a54) (BuildId: 4a3b3faada494607)

SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /home/andrew/serenity/Userland/Libraries/LibJS/Heap/GCPtr.h:187:29 in