With today's git master of both NeoChat and Libquotient, NeoChat crashes shortly after launch 100% of the time for me. backtrace: 44 return INTERNAL_SYSCALL_ERROR_P (ret) ? INTERNAL_SYSCALL_ERRNO (ret) : 0; [Current thread is 1 (Thread 0x7f7e5902dd40 (LWP 180278))] (gdb) bt #0 __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=11, no_tid=no_tid@entry=0) at pthread_kill.c:44 #1 0x00007f7e5eaa86d3 in __pthread_kill_internal (threadid=<optimized out>, signo=11) at pthread_kill.c:78 #2 0x00007f7e5ea4fc4e in __GI_raise (sig=11) at ../sysdeps/posix/raise.c:26 #3 0x00007f7e6242b5ab in KCrash::defaultCrashHandler (sig=11) at /home/nate/kde/src/kcrash/src/kcrash.cpp:596 #4 0x00007f7e5ea4fd00 in <signal handler called> () at /lib64/libc.so.6 #5 std::__atomic_base<int>::fetch_add (this=<optimized out>, __i=1, __m=std::memory_order_acq_rel) at /usr/include/c++/14/bits/atomic_base.h:629 #6 QAtomicOps<int>::ref<int> (_q_value=<optimized out>) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/corelib/thread/qatomic_cxx11.h:259 #7 QBasicAtomicInteger<int>::ref (this=<optimized out>) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/corelib/thread/qbasicatomic.h:47 #8 QArrayData::ref (this=<optimized out>) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/corelib/tools/qarraydata.h:58 #9 QArrayDataPointer<char16_t>::ref (this=0x7fff6ada0520) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/corelib/tools/qarraydatapointer.h:438 #10 QArrayDataPointer<char16_t>::QArrayDataPointer (this=0x7fff6ada0520, other=<optimized out>) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/corelib/tools/qarraydatapointer.h:40 #11 QString::QString (this=0x7fff6ada0520, other=<optimized out>) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/corelib/text/qstring.h:1186 #12 QUrl::scheme (this=this@entry=0x7fff6ada0500) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/corelib/io/qurl.cpp:1987 #13 0x00000000005ce99e in EventHandler::getMediaInfoFromFileInfo (room=room@entry=0x358df1a0, fileInfo=fileInfo@entry=0x381b7300, eventId=..., isThumbnail=isThumbnail@entry=false, isSticker=isSticker@entry=false) at /home/nate/kde/src/neochat/src/eventhandler.cpp:735 #14 0x00000000005cefdc in EventHandler::getMediaInfoForEvent (room=0x358df1a0, event=event@entry=0x34d85af0) at /home/nate/kde/src/neochat/src/eventhandler.cpp:708 #15 0x00000000005cf0d8 in EventHandler::mediaInfo (room=<optimized out>, event=event@entry=0x34d85af0) at /home/nate/kde/src/neochat/src/eventhandler.cpp:692 #16 0x00000000005d6932 in MessageContentModel::data (this=0x37643bb0, index=<optimized out>, role=7) at /home/nate/kde/src/neochat/src/models/messagecontentmodel.cpp:309 #17 0x00007f7e62efdcb8 in QModelIndex::data (this=0x7fff6ada0950, arole=7) at /usr/include/qt6/QtCore/qabstractitemmodel.h:493 #18 QQmlDMAbstractItemModelData::value (this=this@entry=0x35fbeff0, role=7) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/qmlmodels/qqmldmabstractitemmodeldata.cpp:229 #19 0x00007f7e62efe30e in QQmlDMAbstractItemModelData::metaCall (this=0x35fbeff0, call=<optimized out>, id=<optimized out>, arguments=0x7fff6ada0aa0) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/qmlmodels/qqmldmabstractitemmodeldata.cpp:30 #20 0x00007f7e5f1a9081 in QMetaProperty::read (this=this@entry=0x7fff6ada0bf0, object=0x35fbeff0) --Type <RET> for more, q to quit, c to continue without paging--c at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/corelib/kernel/qmetaobject.cpp:3734 #21 0x00007f7e621ef85e in QQmlPropertyToPropertyBinding::update (this=0x381b1080, flags=...) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/qml/qml/qqmlpropertytopropertybinding.cpp:112 #22 0x00007f7e62eedf47 in QQDMIncubationTask::initializeRequiredProperties (this=<optimized out>, modelItemToIncubate=<optimized out>, object=<optimized out>) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/qmlmodels/qqmldelegatemodel.cpp:984 #23 0x00007f7e62eee097 in QQmlDelegateModelPrivate::setInitialState (this=0x3792e220, incubationTask=0x378da0f0, o=0x37bb23c0) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/qmlmodels/qqmldelegatemodel.cpp:1160 #24 0x00007f7e621698c3 in QQmlIncubatorPrivate::incubate (this=this@entry=0x381b74e0, i=...) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/qml/qml/qqmlincubator.cpp:321 #25 0x00007f7e62169c0f in QQmlEnginePrivate::incubate (this=0x3473cdc0, i=<optimized out>, forContext=<optimized out>) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/qml/qml/qqmlincubator.cpp:53 #26 0x00007f7e62eea899 in QQmlDelegateModelPrivate::object (this=0x3792e220, group=QQmlListCompositor::Default, index=1, incubationMode=<optimized out>) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/qmlmodels/qqmldelegatemodel.cpp:1284 #27 0x00007f7e62b6e060 in QQuickRepeaterPrivate::requestItems (this=0x378ee310) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickrepeater.cpp:367 #28 0x00007f7e62b70efc in QQuickRepeater::modelUpdated (this=0x37950e60, changeSet=..., reset=<optimized out>) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickrepeater.cpp:435 #29 0x00007f7e62b715d4 in QQuickRepeater::qt_metacall (this=0x37950e60, _c=QMetaObject::InvokeMetaMethod, _id=7, _a=0x7fff6ada1360) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/redhat-linux-build/src/quick/Quick_autogen/include/moc_qquickrepeater_p.cpp:297 #30 0x00007f7e5f1fcbda in doActivate<false> (sender=0x37decc20, signal_index=4, argv=0x7fff6ada1360) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/corelib/kernel/qobject.cpp:4112 #31 0x00007f7e5f1f2bc7 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7f7e62f367a0 <QQmlInstanceModel::staticMetaObject>, local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x7fff6ada1360) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/corelib/kernel/qobject.cpp:4146 #32 0x00007f7e62ea0df7 in QQmlInstanceModel::modelUpdated (this=<optimized out>, _t1=<optimized out>, _t2=<optimized out>) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/redhat-linux-build/src/qmlmodels/QmlModels_autogen/include/moc_qqmlobjectmodel_p.cpp:279 #33 0x00007f7e62edec7d in non-virtual thunk to QQmlDelegateModelPrivate::emitModelUpdated(QQmlChangeSet const&, bool) () at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/qmlmodels/qqmldelegatemodel_p_p.h:303 #34 0x00007f7e62ee3c5b in QQmlDelegateModelGroupPrivate::emitModelUpdated (this=0x37decd70, reset=reset@entry=true) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/qmlmodels/qqmldelegatemodel.cpp:2875 #35 0x00007f7e62ee6178 in QQmlDelegateModelPrivate::emitChanges (this=this@entry=0x3792e220) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/qmlmodels/qqmldelegatemodel.cpp:1893 #36 0x00007f7e62ef39c7 in QQmlDelegateModel::handleModelReset (this=<optimized out>) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/qmlmodels/qqmldelegatemodel.cpp:1974 #37 0x00007f7e5f1fc8f2 in QtPrivate::QSlotObjectBase::call (this=0x36c09710, r=<optimized out>, a=0x7fff6ada2600) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/corelib/kernel/qobjectdefs_impl.h:469 #38 doActivate<false> (sender=0x37643bb0, signal_index=21, argv=0x7fff6ada2600) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/corelib/kernel/qobject.cpp:4086 #39 0x00007f7e5f1f2bc7 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7f7e5f68efe0, local_signal_index=local_signal_index@entry=18, argv=argv@entry=0x7fff6ada2600) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/corelib/kernel/qobject.cpp:4146 #40 0x00007f7e5f4074f0 in QAbstractItemModel::modelReset (this=<optimized out>, _t1=...) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/redhat-linux-build/src/corelib/Core_autogen/include/moc_qabstractitemmodel.cpp:1112 #41 0x00000000005da0c9 in MessageContentModel::resetModel (this=<optimized out>) at /home/nate/kde/src/neochat/src/models/messagecontentmodel.cpp:411 #42 0x00000000005dafbe in operator() (__closure=0x37b170e0, eventId=<optimized out>) at /home/nate/kde/src/neochat/src/models/messagecontentmodel.cpp:177 #43 operator()<QString> (__closure=0x37b170e0) at /home/nate/kde/usr/include/Quotient/qt_connection_util.h:34 #44 QtPrivate::FunctorCall<QtPrivate::IndexesList<0>, QtPrivate::List<const QString&>, void, Quotient::connectUntil<MessageContentModel::getEvent()::<lambda(const QString&)>, NeoChatRoom, void (NeoChatRoom::*)(const QString&)>(NeoChatRoom*, void (NeoChatRoom::*)(const QString&), QObject*, MessageContentModel::getEvent()::<lambda(const QString&)>&&, Qt::ConnectionType)::<lambda(const Ts& ...)> >::call (f=..., arg=<optimized out>) at /usr/include/qt6/QtCore/qobjectdefs_impl.h:137 #45 QtPrivate::FunctorCallable<Quotient::connectUntil<MessageContentModel::getEvent()::<lambda(const QString&)>, NeoChatRoom, void (NeoChatRoom::*)(const QString&)>(NeoChatRoom*, void (NeoChatRoom::*)(const QString&), QObject*, MessageContentModel::getEvent()::<lambda(const QString&)>&&, Qt::ConnectionType)::<lambda(const Ts& ...)>, const QString&>::call<QtPrivate::List<QString const&>, void> (f=..., arg=<optimized out>) at /usr/include/qt6/QtCore/qobjectdefs_impl.h:345 #46 QtPrivate::QCallableObject<Quotient::connectUntil<MessageContentModel::getEvent()::<lambda(const QString&)>, NeoChatRoom, void (NeoChatRoom::*)(const QString&)>(NeoChatRoom*, void (NeoChatRoom::*)(const QString&), QObject*, MessageContentModel::getEvent()::<lambda(const QString&)>&&, Qt::ConnectionType)::<lambda(const Ts& ...)>, QtPrivate::List<const QString&>, void>::impl(int, QtPrivate::QSlotObjectBase *, QObject *, void **, bool *) (which=<optimized out>, this_=0x37b170d0, r=<optimized out>, a=<optimized out>, ret=<optimized out>) at /usr/include/qt6/QtCore/qobjectdefs_impl.h:555 #47 0x00007f7e5f1fc8f2 in QtPrivate::QSlotObjectBase::call (this=0x37b170d0, r=<optimized out>, a=0x7fff6ada2770) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/corelib/kernel/qobjectdefs_impl.h:469 #48 doActivate<false> (sender=0x358df1a0, signal_index=80, argv=0x7fff6ada2770) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/corelib/kernel/qobject.cpp:4086 #49 0x00007f7e5f1f2bc7 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x8617e0 <NeoChatRoom::staticMetaObject>, local_signal_index=local_signal_index@entry=21, argv=argv@entry=0x7fff6ada2770) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/corelib/kernel/qobject.cpp:4146 #50 0x0000000000561182 in NeoChatRoom::extraEventLoaded (this=<optimized out>, _t1=...) at /home/nate/kde/build/neochat/src/neochat_autogen/include/moc_neochatroom.cpp:1321 #51 operator() (__closure=0x36e8adb0) at /home/nate/kde/src/neochat/src/neochatroom.cpp:1780 #52 QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, NeoChatRoom::downloadEventFromServer(const QString&)::<lambda()> >::call (f=..., arg=<optimized out>) at /usr/include/qt6/QtCore/qobjectdefs_impl.h:137 #53 QtPrivate::FunctorCallable<NeoChatRoom::downloadEventFromServer(const QString&)::<lambda()> >::call<QtPrivate::List<>, void> (f=..., arg=<optimized out>) at /usr/include/qt6/QtCore/qobjectdefs_impl.h:345 #54 QtPrivate::QCallableObject<NeoChatRoom::downloadEventFromServer(const QString&)::<lambda()>, QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase *, QObject *, void **, bool *) (which=<optimized out>, this_=0x36e8ada0, r=<optimized out>, a=<optimized out>, ret=<optimized out>) at /usr/include/qt6/QtCore/qobjectdefs_impl.h:555 #55 0x00007f7e5f1fc8f2 in QtPrivate::QSlotObjectBase::call (this=0x36e8ada0, r=<optimized out>, a=0x7fff6ada28c0) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/corelib/kernel/qobjectdefs_impl.h:469 #56 doActivate<false> (sender=0x37bed710, signal_index=10, argv=0x7fff6ada28c0) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/corelib/kernel/qobject.cpp:4086 #57 0x00007f7e5f1f2bc7 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7f7e61d5bb00, local_signal_index=local_signal_index@entry=7, argv=argv@entry=0x7fff6ada28c0) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/corelib/kernel/qobject.cpp:4146 #58 0x00007f7e61b4ec52 in Quotient::BaseJob::success (this=<optimized out>, _t1=<optimized out>) at /home/nate/kde/build/libquotient/QuotientQt6_autogen/T4CFEN5LXH/moc_basejob.cpp:535 #59 0x00007f7e61c511fd in Quotient::BaseJob::finishJob (this=0x37bed710) at /home/nate/kde/src/libquotient/Quotient/jobs/basejob.cpp:628 #60 0x00007f7e5f1fc8f2 in QtPrivate::QSlotObjectBase::call (this=0x35aa2e20, r=<optimized out>, a=0x7fff6ada2a18) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/corelib/kernel/qobjectdefs_impl.h:469 #61 doActivate<false> (sender=0x36a8bb70, signal_index=12, argv=0x7fff6ada2a18) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/corelib/kernel/qobject.cpp:4086 #62 0x00007f7e5f1f2bc7 in QMetaObject::activate (sender=sender@entry=0x36a8bb70, m=m@entry=0x7f7e5f9f1680, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x0) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/corelib/kernel/qobject.cpp:4146 #63 0x00007f7e5f88f1c7 in QNetworkReply::finished (this=this@entry=0x36a8bb70) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/redhat-linux-build/src/network/Network_autogen/include/moc_qnetworkreply.cpp:435 #64 0x00007f7e5f938e01 in QNetworkReplyHttpImplPrivate::finished (this=0x380ce2b0) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/network/access/qnetworkreplyhttpimpl.cpp:2147 #65 0x00007f7e5f1eddcb in QObject::event (this=0x36a8bb70, e=0x7f7de4016320) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/corelib/kernel/qobject.cpp:1452 #66 0x00007f7e6078b218 in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x36a8bb70, e=0x7f7de4016320) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/widgets/kernel/qapplication.cpp:3287 #67 0x00007f7e5f196e88 in QCoreApplication::notifyInternal2 (receiver=0x36a8bb70, event=0x7f7de4016320) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/corelib/kernel/qcoreapplication.cpp:1142 #68 0x00007f7e5f1970ed in QCoreApplication::sendEvent (receiver=<optimized out>, event=<optimized out>) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/corelib/kernel/qcoreapplication.cpp:1583 #69 0x00007f7e5f19ac51 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x344ab7a0) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/corelib/kernel/qcoreapplication.cpp:1940 #70 0x00007f7e5f19aefd in QCoreApplication::sendPostedEvents (receiver=<optimized out>, event_type=<optimized out>) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/corelib/kernel/qcoreapplication.cpp:1797 #71 0x00007f7e5f4859ef in postEventSourceDispatch (s=0x345d9430) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/corelib/kernel/qeventdispatcher_glib.cpp:244 #72 0x00007f7e5c70ee8c in g_main_dispatch (context=0x7f7e44000f00) at ../glib/gmain.c:3344 #73 g_main_context_dispatch_unlocked (context=0x7f7e44000f00) at ../glib/gmain.c:4152 #74 0x00007f7e5c770c98 in g_main_context_iterate_unlocked.isra.0 (context=context@entry=0x7f7e44000f00, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:4217 #75 0x00007f7e5c710383 in g_main_context_iteration (context=0x7f7e44000f00, may_block=1) at ../glib/gmain.c:4282 #76 0x00007f7e5f4851a3 in QEventDispatcherGlib::processEvents (this=0x3448e0c0, flags=...) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/corelib/kernel/qeventdispatcher_glib.cpp:394 #77 0x00007f7e5f1a3bc3 in QEventLoop::exec (this=this@entry=0x7fff6ada2f90, flags=..., flags@entry=...) at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/corelib/global/qflags.h:34 #78 0x00007f7e5f19fa7c in QCoreApplication::exec () at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/corelib/global/qflags.h:74 #79 0x00007f7e5fbd66ed in QGuiApplication::exec () at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/gui/kernel/qguiapplication.cpp:1926 #80 0x00007f7e6078b189 in QApplication::exec () at /usr/src/debug/qt6-qtbase-6.7.2-6.fc40.x86_64/src/widgets/kernel/qapplication.cpp:2555 #81 0x000000000043a121 in main (argc=<optimized out>, argv=<optimized out>) at /home/nate/kde/src/neochat/src/main.cpp:307
I'm certain this is fixed by https://invent.kde.org/network/neochat/-/merge_requests/1949, closing. Re-open if you're still hitting this but I haven't yet on master.