https://bugs.kde.org/show_bug.cgi?id=464885
--- Comment #3 from herminio.hernande...@gmail.com ---
I also affirm I am seeing the same thing under Gentoo Linux
Thread 1 "kdenlive" received signal SIGSEGV, Segmentation fault.
0x00007ffff50cbbc7 in std::__atomic_base<QMutexData*>::compare_exchange_strong
(__m2=std::memory_order_acquire, __m1=std::memory_order_acquire, __p2=0x1,
__p1=<synthetic pointer>: 0x0, this=this@entry=0x58) at
/usr/lib/gcc/x86_64-pc-linux-gnu/12/include/g++-v12/bits/atomic_base.h:876
876 __glibcxx_assert(__is_valid_cmpexch_failure_order(__m2));
(gdb) bt
#0 0x00007ffff50cbbc7 in
std::__atomic_base<QMutexData*>::compare_exchange_strong(QMutexData*&,
QMutexData*, std::memory_order, std::memory_order)
(__m2=std::memory_order_acquire, __m1=std::memory_order_acquire, __p2=0x1,
__p1=<synthetic pointer>: 0x0, this=this@entry=0x58)
at
/usr/lib/gcc/x86_64-pc-linux-gnu/12/include/g++-v12/bits/atomic_base.h:876
#1 std::atomic<QMutexData*>::compare_exchange_strong(QMutexData*&,
QMutexData*, std::memory_order, std::memory_order)
(__m2=std::memory_order_acquire, __m1=std::memory_order_acquire, __p2=0x1,
__p1=<synthetic pointer>: 0x0, this=this@entry=0x58)
at /usr/lib/gcc/x86_64-pc-linux-gnu/12/include/g++-v12/atomic:625
#2
QAtomicOps<QMutexData*>::testAndSetAcquire<QMutexData*>(std::atomic<QMutexData*>&,
QMutexData*, QMutexData*, QMutexData**)
(currentValue=<synthetic pointer>, newValue=0x1, expectedValue=0x0,
_q_value=<error reading variable: Cannot access memory at address 0x58>)
at
/usr/src/debug/dev-qt/qtcore-5.15.10-r1/qtbase-everywhere-src-5.15.10/include/QtCore/../../src/corelib/thread/qatomic_cxx11.h:308
#3 QBasicAtomicPointer<QMutexData>::testAndSetAcquire(QMutexData*,
QMutexData*, QMutexData*&)
(currentValue=<synthetic pointer>: <optimized out>, newValue=0x1,
expectedValue=0x0, this=this@entry=0x58)
at
/usr/src/debug/dev-qt/qtcore-5.15.10-r1/qtbase-everywhere-src-5.15.10/include/QtCore/../../src/corelib/thread/qbasicatomic.h:273
#4 QBasicMutex::fastTryLock(QMutexData*&) (current=<synthetic pointer>:
<optimized out>, this=this@entry=0x58)
at
/usr/src/debug/dev-qt/qtcore-5.15.10-r1/qtbase-everywhere-src-5.15.10/src/corelib/thread/qmutex.h:128
#5 QMutex::lock() (this=this@entry=0x58) at
/usr/src/debug/dev-qt/qtcore-5.15.10-r1/qtbase-everywhere-src-5.15.10/src/corelib/thread/qmutex.cpp:232
#6 0x00007ffff50c9dad in QMutexLocker::QMutexLocker(QBasicMutex*) (m=0x58,
this=0x7fffffffce90)
at
/usr/src/debug/dev-qt/qtcore-5.15.10-r1/qtbase-everywhere-src-5.15.10/src/corelib/thread/qmutex.h:257
#7 QThread::exit(int) (this=<optimized out>, returnCode=returnCode@entry=0)
at
/usr/src/debug/dev-qt/qtcore-5.15.10-r1/qtbase-everywhere-src-5.15.10/src/corelib/thread/qthread.cpp:580
#8 0x00007ffff50c9e47 in QThread::quit() (this=<optimized out>)
at
/usr/src/debug/dev-qt/qtcore-5.15.10-r1/qtbase-everywhere-src-5.15.10/src/corelib/thread/qthread.cpp:601
#9 0x000055555594d8d8 in onThreadJoin(mlt_properties, GLWidget*,
mlt_event_data) (owner=<optimized out>, self=<optimized out>, data=...)
at
/usr/src/debug/kde-apps/kdenlive-23.04.3/kdenlive-23.04.3/src/monitor/glwidget.cpp:911
#10 0x00007ffff7b0de0b in mlt_events_fire () at /usr/lib64/libmlt-7.so.7
#11 0x00007ffff7b0d050 in mlt_consumer_stop () at /usr/lib64/libmlt-7.so.7
#12 0x00005555559508f9 in GLWidget::stop() (this=this@entry=0x555557e55eb0) at
/usr/lib/gcc/x86_64-pc-linux-gnu/12/include/g++-v12/bits/shared_ptr_base.h:1665
#13 0x0000555555953214 in GLWidget::setProducer(std::shared_ptr<Mlt::Producer>
const&, bool, int)
(this=0x555557e55eb0, producer=std::shared_ptr<Mlt::Producer> (use count 1,
weak count 0) = {...}, isActive=<optimized out>, position=position@entry=0)
at
/usr/src/debug/kde-apps/kdenlive-23.04.3/kdenlive-23.04.3/src/monitor/glwidget.cpp:1007
#14 0x000055555595e930 in Monitor::setProducer(std::shared_ptr<Mlt::Producer>,
int)
(this=this@entry=0x555556966490, producer=std::shared_ptr<Mlt::Producer>
(use count 1, weak count 0) = {...}, pos=pos@entry=0)
at
/usr/src/debug/kde-apps/kdenlive-23.04.3/kdenlive-23.04.3/src/monitor/monitor.cpp:2625
#15 0x00005555559f6016 in ProjectManager::updateTimeline(int, bool, QString
const&, QString const&, QDateTime const&, bool)
(this=this@entry=0x555556313d10, pos=pos@entry=0,
createNewTab=createNewTab@entry=true, chunks=..., dirty=..., documentDate=...,
enablePreview=false)
at
/usr/src/debug/kde-apps/kdenlive-23.04.3/kdenlive-23.04.3/src/project/projectmanager.cpp:1325
#16 0x00005555559f73e0 in ProjectManager::newFile(QString, bool)
(this=this@entry=0x555556313d10, profileName=...,
showProjectSettings=<optimized out>)
at
/usr/src/debug/kde-apps/kdenlive-23.04.3/kdenlive-23.04.3/src/project/projectmanager.cpp:252
#17 0x00005555559f79ed in ProjectManager::newFile(bool) (this=0x555556313d10,
showProjectSettings=<optimized out>)
at
/usr/src/debug/kde-apps/kdenlive-23.04.3/kdenlive-23.04.3/src/project/projectmanager.cpp:157
#18 0x00005555559f86da in ProjectManager::slotLoadOnOpen()
(this=0x555556313d10)
at
/usr/src/debug/kde-apps/kdenlive-23.04.3/kdenlive-23.04.3/src/project/projectmanager.cpp:91
#19 0x00007ffff52a4994 in QObject::event(QEvent*) (this=0x555556313d10,
e=0x55555888c270)
--Type <RET> for more, q to quit, c to continue without paging--c
at
/usr/src/debug/dev-qt/qtcore-5.15.10-r1/qtbase-everywhere-src-5.15.10/src/corelib/kernel/qobject.cpp:1347
#20 0x00007ffff656300e in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /usr/lib64/libQt5Widgets.so.5
#21 0x00007ffff527a708 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
(receiver=0x555556313d10, event=0x55555888c270)
at
/usr/src/debug/dev-qt/qtcore-5.15.10-r1/qtbase-everywhere-src-5.15.10/src/corelib/kernel/qcoreapplication.cpp:1064
#22 0x00007ffff527a8de in QCoreApplication::sendEvent(QObject*, QEvent*)
(receiver=<optimized out>, event=<optimized out>)
at
/usr/src/debug/dev-qt/qtcore-5.15.10-r1/qtbase-everywhere-src-5.15.10/src/corelib/kernel/qcoreapplication.cpp:1462
#23 0x00007ffff527daa3 in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) (receiver=0x0, event_type=0, data=0x555555eff470)
at
/usr/src/debug/dev-qt/qtcore-5.15.10-r1/qtbase-everywhere-src-5.15.10/src/corelib/kernel/qcoreapplication.cpp:1821
#24 0x00007ffff527dd38 in QCoreApplication::sendPostedEvents(QObject*, int)
(receiver=<optimized out>, event_type=<optimized out>)
at
/usr/src/debug/dev-qt/qtcore-5.15.10-r1/qtbase-everywhere-src-5.15.10/src/corelib/kernel/qcoreapplication.cpp:1680
#25 0x00007ffff52ca603 in postEventSourceDispatch(GSource*, GSourceFunc,
gpointer) (s=0x555555fb8370)
at
/usr/src/debug/dev-qt/qtcore-5.15.10-r1/qtbase-everywhere-src-5.15.10/src/corelib/kernel/qeventdispatcher_glib.cpp:277
#26 0x00007ffff3716bfd in g_main_context_dispatch () at
/usr/lib64/libglib-2.0.so.0
#27 0x00007ffff3716ea8 in () at /usr/lib64/libglib-2.0.so.0
#28 0x00007ffff3716f3c in g_main_context_iteration () at
/usr/lib64/libglib-2.0.so.0
#29 0x00007ffff52ca106 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x555555fb72c0, flags=...)
at
/usr/src/debug/dev-qt/qtcore-5.15.10-r1/qtbase-everywhere-src-5.15.10/src/corelib/kernel/qeventdispatcher_glib.cpp:423
#30 0x00007ffff52791bb in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7fffffffd910, flags=..., flags@entry=...)
at
/usr/src/debug/dev-qt/qtcore-5.15.10-r1/qtbase-everywhere-src-5.15.10/include/QtCore/../../src/corelib/global/qflags.h:69
#31 0x00007ffff5281156 in QCoreApplication::exec() ()
at
/usr/src/debug/dev-qt/qtcore-5.15.10-r1/qtbase-everywhere-src-5.15.10/include/QtCore/../../src/corelib/global/qflags.h:121
#32 0x000055555562fed7 in main(int, char**) (argc=<optimized out>,
argv=0x7fffffffdd18) at
/usr/src/debug/kde-apps/kdenlive-23.04.3/kdenlive-23.04.3/src/main.cpp:352
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