Reduction:
<!DOCTYPE html>
<style>
mo {
position: absolute;
}
</style><math><mo>test</mo></math>Stack trace from gdb:
#0 ak_trap () at /home/tim/repos/ladybird/AK/Assertions.cpp:100
#1 0x00007f569e65fe1f in ak_verification_failed ()
at /home/tim/repos/ladybird/AK/Assertions.cpp:110
#2 0x00007f569fcb1dda in value () at /home/tim/repos/ladybird/AK/Optional.h:291
#3 operator-> () at /home/tim/repos/ladybird/AK/Optional.h:126
#4 static_position () at /home/tim/repos/ladybird/Libraries/LibWeb/Layout/LayoutState.h:180
#5 0x00007f569fcac5a4 in operator() ()
at /home/tim/repos/ladybird/Libraries/LibWeb/Layout/FormattingContext.cpp:736
#6 0x00007f569fca7fc9 in compute_width_for_absolutely_positioned_non_replaced_element ()
at /home/tim/repos/ladybird/Libraries/LibWeb/Layout/FormattingContext.cpp:827
#7 0x00007f569fca6b3a in compute_width_for_absolutely_positioned_element ()
at /home/tim/repos/ladybird/Libraries/LibWeb/Layout/FormattingContext.cpp:548
#8 0x00007f569fcadd48 in layout_absolutely_positioned_element ()
at /home/tim/repos/ladybird/Libraries/LibWeb/Layout/FormattingContext.cpp:1220
#9 0x00007f569fc8c56e in parent_context_did_dimension_child_root_box ()
at /home/tim/repos/ladybird/Libraries/LibWeb/Layout/BlockFormattingContext.cpp:152
#10 0x00007f569fc8b726 in ~BlockFormattingContext ()
at /home/tim/repos/ladybird/Libraries/LibWeb/Layout/BlockFormattingContext.cpp:39
#11 0x00007f569f98654a in update_layout ()
at /home/tim/repos/ladybird/Libraries/LibWeb/DOM/Document.cpp:1300
#12 0x00007f569faf7dde in update_the_rendering ()
at /home/tim/repos/ladybird/Libraries/LibWeb/HTML/EventLoop/EventLoop.cpp:340
#13 0x00007f569f73630f in operator() () at /home/tim/repos/ladybird/AK/Function.h:120
#14 0x00007f569faf7431 in process ()
at /home/tim/repos/ladybird/Libraries/LibWeb/HTML/EventLoop/EventLoop.cpp:180
#15 0x00007f569f73630f in operator() () at /home/tim/repos/ladybird/AK/Function.h:120
#16 0x00007f569edd91af in operator() () at /home/tim/repos/ladybird/AK/Function.h:120
#17 0x00007f569edd8535 in dispatch_event ()
at /home/tim/repos/ladybird/Libraries/LibCore/EventReceiver.cpp:162
#18 0x00007f56a0df10aa in qt_timer_fired ()
at /home/tim/repos/ladybird/Libraries/LibWebView/EventLoop/EventLoopImplementationQt.cpp:247
#19 operator() ()
at /home/tim/repos/ladybird/Libraries/LibWebView/EventLoop/EventLoopImplementationQt.cpp:261
#20 call () at /usr/include/x86_64-linux-gnu/qt6/QtCore/qobjectdefs_impl.h:127
#21 call<QtPrivate::List<>, void> ()
at /usr/include/x86_64-linux-gnu/qt6/QtCore/qobjectdefs_impl.h:241
#22 impl () at /usr/include/x86_64-linux-gnu/qt6/QtCore/qobjectdefs_impl.h:408
#23 0x00007f56a0f83d9b in ?? () from /lib/x86_64-linux-gnu/libQt6Core.so.6
#24 0x00007f56a0f8ed6d in QTimer::timeout(QTimer::QPrivateSignal) ()
from /lib/x86_64-linux-gnu/libQt6Core.so.6
#25 0x00007f56a0f76576 in QObject::event(QEvent*) ()
from /lib/x86_64-linux-gnu/libQt6Core.so.6
#26 0x00007f56a0f38416 in QCoreApplication::notifyInternal2(QObject*, QEvent*) ()
from /lib/x86_64-linux-gnu/libQt6Core.so.6
#27 0x00007f56a107b7ab in QTimerInfoList::activateTimers() ()
from /lib/x86_64-linux-gnu/libQt6Core.so.6
#28 0x00007f56a1133a61 in ?? () from /lib/x86_64-linux-gnu/libQt6Core.so.6
#29 0x00007f569e1145b5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#30 0x00007f569e173717 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#31 0x00007f569e113a53 in g_main_context_iteration ()
from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007f56a11315ef in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt6Core.so.6
#33 0x00007f56a0f429a3 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib/x86_64-linux-gnu/libQt6Core.so.6
#34 0x00007f569edd64f7 in exec ()
at /home/tim/repos/ladybird/Libraries/LibCore/EventLoop.cpp:88
#35 0x000063d1c8d5cc5d in serenity_main ()
at /home/tim/repos/ladybird/Services/WebContent/main.cpp:224
#36 0x000063d1c8e2325f in main () at /home/tim/repos/ladybird/Libraries/LibMain/Main.cpp:39
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