Thread 1 "octave-gui" received signal SIGSEGV, Segmentation fault. 0x00007ffff466fcb2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 (gdb) thread apply all bt Thread 22 (Thread 0x7fffa57fa640 (LWP 27347)): #0 0x00007ffff54246c2 in __GI___sigtimedwait (set=set@entry=0x7ffff677d000 , info=info@entry=0x7fffa57f2940, timeout=timeout@entry=0x0) at ../sysdeps/unix/sysv/linux/sigtimedwait.c:29 #1 0x00007ffff5423d1c in __GI___sigwait (set=set@entry=0x7ffff677d000 , sig=sig@entry=0x7fffa57f29f4) at ../sysdeps/unix/sysv/linux/sigwait.c:28 #2 0x00007ffff64d8781 in signal_watcher (arg=0x7ffff7753e00 ) at ../liboctave/wrappers/signal-wrappers.c:697 #3 0x00007ffff3748590 in start_thread (arg=0x7fffa57fa640) at pthread_create.c:463 #4 0x00007ffff54fb223 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 21 (Thread 0x7fffa5ffb640 (LWP 27346)): #0 futex_wait_cancelable (private=, expected=0, futex_word=0x555555890f04) at ../sysdeps/nptl/futex-internal.h:183 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555555890eb0, cond=0x555555890ed8) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x555555890ed8, mutex=0x555555890eb0) at pthread_cond_wait.c:638 #3 0x00007ffff398474b in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #4 0x00007ffff7dc6bf4 in octave::qt_interpreter_events::wait() (this=0x5555557cb960) at ../libgui/src/qt-interpreter-events.h:196 #5 octave::qt_interpreter_events::confirm_shutdown() (this=0x5555557cb960) at ../libgui/src/qt-interpreter-events.cc:287 #6 0x00007ffff75cad27 in octave::event_manager::confirm_shutdown() (this=0x7fff84003d10) at /usr/include/c++/10/bits/shared_ptr_base.h:1324 #7 octave::event_manager::confirm_shutdown() (this=0x7fff84003d10) at ../libinterp/corefcn/event-manager.h:462 #8 octave::interpreter::quit(int, bool, bool) (this=0x7fff84002960, exit_status=0, force=, confirm=) at ../libinterp/corefcn/interpreter.cc:2035 #9 0x00007ffff75cd776 in Fquit(octave::interpreter&, octave_value_list const&, int) (interp=..., args=...) at ../libinterp/corefcn/interpreter.cc:232 #10 0x00007ffff6fe09a4 in octave_builtin::execute(octave::tree_evaluator&, int, octave_value_list const&) (this=0x7fff840cb2b0, tw=..., nargout=0, args=...) at ../libinterp/octave-value/ov-builtin.cc:65 #11 0x00007ffff704933c in octave_function::call(octave::tree_evaluator&, int, octave_value_list const&) (this=this@entry=0x7fff840cb2b0, tw=..., nargout=nargout@entry=0, args=...) at ../libinterp/octave-value/ov-fcn.cc:57 #12 0x00007ffff72199dd in octave::tree_identifier::evaluate_n(octave::tree_evaluator&, int) (this=0x7fffa5ff2f00, tw=..., nargout=0) at /usr/include/c++/10/bits/atomic_base.h:546 #13 0x00007ffff7212dee in octave::tree_identifier::evaluate(octave::tree_evaluator&, int) (this=, tw=..., nargout=) at ../libinterp/parse-tree/pt-id.h:98 #14 0x00007ffff720e77d in octave::tree_evaluator::visit_statement(octave::tree_statement&) (this=0x7fff84003738, stmt=...) at ../libinterp/parse-tree/pt-eval.cc:3629 #15 0x00007ffff71fb2ac in octave::tree_statement::accept(octave::tree_walker&) (tw=..., this=0x7fff8476a440) at ../libinterp/parse-tree/pt-stmt.h:124 #16 octave::tree_evaluator::visit_statement_list(octave::tree_statement_list&) (this=0x7fff84003738, lst=...) at ../libinterp/parse-tree/pt-eval.cc:3714 #17 0x00007ffff71fcc4b in octave::tree_statement_list::accept(octave::tree_walker&) (tw=..., this=) at ../libinterp/parse-tree/pt-stmt.h:201 #18 octave::tree_evaluator::eval(std::shared_ptr&, bool) (this=0x7fff84003738, stmt_list=..., interactive=) at ../libinterp/parse-tree/pt-eval.cc:882 #19 0x00007ffff720ea99 in octave::tree_evaluator::repl() (this=this@entry=0x7fff84003738) at ../libinterp/corefcn/interpreter.h:175 #20 0x00007ffff75c9d40 in octave::interpreter::main_loop() (this=this@entry=0x7fff84002960) at ../libinterp/corefcn/interpreter.cc:1394 #21 0x00007ffff75d33b8 in octave::interpreter::execute() (this=this@entry=0x7fff84002960) at ../libinterp/corefcn/interpreter.cc:981 #22 0x00007ffff7d797e0 in octave::interpreter_qobject::execute() (this=0x5555557af050) at ../libgui/src/interpreter-qobject.cc:91 #23 0x00007ffff3b8c651 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #24 0x00007ffff4618013 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #25 0x00007ffff7dc3b7b in octave::octave_qapplication::notify(QObject*, QEvent*) (this=0x5555556763a0, receiver=, ev=) at ../libgui/src/octave-qobject.cc:133 #26 0x00007ffff3b601ca in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #27 0x00007ffff3b62bc1 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #28 0x00007ffff3bb81c7 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #29 0x00007ffff11d262b in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #30 0x00007ffff11d28d8 in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #31 0x00007ffff11d29a3 in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #32 0x00007ffff3bb7843 in QEventDispatcherGlib::processEvents(QFlags) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #33 0x00007ffff3b5ea4b in QEventLoop::exec(QFlags) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #34 0x00007ffff397d8b2 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #35 0x00007ffff397ea41 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #36 0x00007ffff3748590 in start_thread (arg=0x7fffa5ffb640) at pthread_create.c:463 #37 0x00007ffff54fb223 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 20 (Thread 0x7fffa67fc640 (LWP 27345)): #0 futex_wait_cancelable (private=, expected=0, futex_word=0x555556479dc8) at ../sysdeps/nptl/futex-internal.h:183 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555556479d78, cond=0x555556479da0) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x555556479da0, mutex=0x555556479d78) at pthread_cond_wait.c:638 #3 0x00007fffd1cb287b in () at /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so #4 0x00007fffd1cb233b in () at /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so #5 0x00007ffff3748590 in start_thread (arg=0x7fffa67fc640) at pthread_create.c:463 #6 0x00007ffff54fb223 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 19 (Thread 0x7fffa6ffd640 (LWP 27344)): #0 futex_wait_cancelable (private=, expected=0, futex_word=0x555556479dc8) at ../sysdeps/nptl/futex-internal.h:183 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555556479d78, cond=0x555556479da0) at pthread_cond_wait.c:508 --Type for more, q to quit, c to continue without paging--c #2 __pthread_cond_wait (cond=0x555556479da0, mutex=0x555556479d78) at pthread_cond_wait.c:638 #3 0x00007fffd1cb287b in () at /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so #4 0x00007fffd1cb233b in () at /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so #5 0x00007ffff3748590 in start_thread (arg=0x7fffa6ffd640) at pthread_create.c:463 #6 0x00007ffff54fb223 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 18 (Thread 0x7fffa77fe640 (LWP 27343)): #0 futex_wait_cancelable (private=, expected=0, futex_word=0x555556479dc8) at ../sysdeps/nptl/futex-internal.h:183 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555556479d78, cond=0x555556479da0) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x555556479da0, mutex=0x555556479d78) at pthread_cond_wait.c:638 #3 0x00007fffd1cb287b in () at /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so #4 0x00007fffd1cb233b in () at /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so #5 0x00007ffff3748590 in start_thread (arg=0x7fffa77fe640) at pthread_create.c:463 #6 0x00007ffff54fb223 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 17 (Thread 0x7fffa7fff640 (LWP 27342)): #0 futex_wait_cancelable (private=, expected=0, futex_word=0x555556479dc8) at ../sysdeps/nptl/futex-internal.h:183 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555556479d78, cond=0x555556479da0) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x555556479da0, mutex=0x555556479d78) at pthread_cond_wait.c:638 #3 0x00007fffd1cb287b in () at /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so #4 0x00007fffd1cb233b in () at /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so #5 0x00007ffff3748590 in start_thread (arg=0x7fffa7fff640) at pthread_create.c:463 #6 0x00007ffff54fb223 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 16 (Thread 0x7fffbd057640 (LWP 27341)): #0 futex_wait_cancelable (private=, expected=0, futex_word=0x5555564b5610) at ../sysdeps/nptl/futex-internal.h:183 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5555564b55c0, cond=0x5555564b55e8) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x5555564b55e8, mutex=0x5555564b55c0) at pthread_cond_wait.c:638 #3 0x00007fffd1ea9c8b in () at /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so #4 0x00007fffd1ea9c0b in () at /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so #5 0x00007ffff3748590 in start_thread (arg=0x7fffbd057640) at pthread_create.c:463 #6 0x00007ffff54fb223 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 15 (Thread 0x7fffbd858640 (LWP 27340)): #0 futex_wait_cancelable (private=, expected=0, futex_word=0x5555564b5610) at ../sysdeps/nptl/futex-internal.h:183 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5555564b55c0, cond=0x5555564b55e8) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x5555564b55e8, mutex=0x5555564b55c0) at pthread_cond_wait.c:638 #3 0x00007fffd1ea9c8b in () at /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so #4 0x00007fffd1ea9c0b in () at /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so #5 0x00007ffff3748590 in start_thread (arg=0x7fffbd858640) at pthread_create.c:463 #6 0x00007ffff54fb223 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 14 (Thread 0x7fffbe059640 (LWP 27339)): #0 futex_wait_cancelable (private=, expected=0, futex_word=0x5555564b5610) at ../sysdeps/nptl/futex-internal.h:183 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5555564b55c0, cond=0x5555564b55e8) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x5555564b55e8, mutex=0x5555564b55c0) at pthread_cond_wait.c:638 #3 0x00007fffd1ea9c8b in () at /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so #4 0x00007fffd1ea9c0b in () at /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so #5 0x00007ffff3748590 in start_thread (arg=0x7fffbe059640) at pthread_create.c:463 #6 0x00007ffff54fb223 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 13 (Thread 0x7fffbe85a640 (LWP 27338)): #0 futex_wait_cancelable (private=, expected=0, futex_word=0x5555564b5610) at ../sysdeps/nptl/futex-internal.h:183 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5555564b55c0, cond=0x5555564b55e8) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x5555564b55e8, mutex=0x5555564b55c0) at pthread_cond_wait.c:638 #3 0x00007fffd1ea9c8b in () at /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so #4 0x00007fffd1ea9c0b in () at /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so #5 0x00007ffff3748590 in start_thread (arg=0x7fffbe85a640) at pthread_create.c:463 #6 0x00007ffff54fb223 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 12 (Thread 0x7fffbf05b640 (LWP 27337)): #0 futex_wait_cancelable (private=, expected=0, futex_word=0x555556478828) at ../sysdeps/nptl/futex-internal.h:183 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5555564787d8, cond=0x555556478800) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x555556478800, mutex=0x5555564787d8) at pthread_cond_wait.c:638 #3 0x00007fffd1eac8e3 in () at /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so #4 0x00007fffd1eac1bb in () at /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so #5 0x00007ffff3748590 in start_thread (arg=0x7fffbf05b640) at pthread_create.c:463 #6 0x00007ffff54fb223 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 11 (Thread 0x7fffd080f640 (LWP 27336)): #0 futex_wait_cancelable (private=, expected=0, futex_word=0x5555564786c8) at ../sysdeps/nptl/futex-internal.h:183 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555556478678, cond=0x5555564786a0) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x5555564786a0, mutex=0x555556478678) at pthread_cond_wait.c:638 #3 0x00007fffd1eac8e3 in () at /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so #4 0x00007fffd1eac1bb in () at /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so #5 0x00007ffff3748590 in start_thread (arg=0x7fffd080f640) at pthread_create.c:463 #6 0x00007ffff54fb223 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 10 (Thread 0x7fffd1010640 (LWP 27335)): #0 futex_wait_cancelable (private=, expected=0, futex_word=0x555556478568) at ../sysdeps/nptl/futex-internal.h:183 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555556478518, cond=0x555556478540) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x555556478540, mutex=0x555556478518) at pthread_cond_wait.c:638 #3 0x00007fffd1eac8e3 in () at /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so #4 0x00007fffd1eac1bb in () at /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so #5 0x00007ffff3748590 in start_thread (arg=0x7fffd1010640) at pthread_create.c:463 #6 0x00007ffff54fb223 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 9 (Thread 0x7fffd1811640 (LWP 27334)): #0 futex_wait_cancelable (private=, expected=0, futex_word=0x555556478408) at ../sysdeps/nptl/futex-internal.h:183 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5555564783b8, cond=0x5555564783e0) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x5555564783e0, mutex=0x5555564783b8) at pthread_cond_wait.c:638 #3 0x00007fffd1eac8e3 in () at /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so #4 0x00007fffd1eac1bb in () at /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so #5 0x00007ffff3748590 in start_thread (arg=0x7fffd1811640) at pthread_create.c:463 #6 0x00007ffff54fb223 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 7 (Thread 0x7fffd3fff640 (LWP 27332)): #0 futex_wait_cancelable (private=, expected=0, futex_word=0x555555c76620) at ../sysdeps/nptl/futex-internal.h:183 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555555c765d0, cond=0x555555c765f8) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x555555c765f8, mutex=0x555555c765d0) at pthread_cond_wait.c:638 #3 0x00007ffff398474b in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #4 0x00007ffff483ee8d in () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #5 0x00007ffff397ea41 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #6 0x00007ffff3748590 in start_thread (arg=0x7fffd3fff640) at pthread_create.c:463 #7 0x00007ffff54fb223 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 6 (Thread 0x7fffe8d06640 (LWP 27331)): #0 syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38 #1 0x00007ffff3980ce1 in QSemaphore::acquire(int) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #2 0x00007ffff3b9624a in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #3 0x00007ffff7cf0d41 in SelfListener::recvData(char const*, int) (this=this@entry=0x555555914ff0, _t1=, _t1@entry=0x7fffe8cfd9a0 "\r\n", _t2=) at libgui/qterminal/libqterminal/unix/moc-SelfListener.cc:138 #4 0x00007ffff7ce3329 in SelfListener::run() (this=0x555555914ff0) at ../libgui/qterminal/libqterminal/unix/SelfListener.cpp:32 #5 0x00007ffff397ea41 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #6 0x00007ffff3748590 in start_thread (arg=0x7fffe8d06640) at pthread_create.c:463 #7 0x00007ffff54fb223 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 5 (Thread 0x7fffe97e7640 (LWP 27329)): #0 0x00007ffff54ef66f in __GI___poll (fds=0x7fffd400fad0, nfds=4, timeout=24626) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007ffff11d286e in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007ffff11d29a3 in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007ffff3bb7843 in QEventDispatcherGlib::processEvents(QFlags) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #4 0x00007ffff3b5ea4b in QEventLoop::exec(QFlags) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007ffff397d8b2 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #6 0x00007fffeceed4cb in () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5 #7 0x00007ffff397ea41 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #8 0x00007ffff3748590 in start_thread (arg=0x7fffe97e7640) at pthread_create.c:463 #9 0x00007ffff54fb223 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 4 (Thread 0x7fffea22c640 (LWP 27328)): #0 0x00007ffff54ef66f in __GI___poll (fds=0x5555557e2040, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007ffff11d286e in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007ffff11d2bf3 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007fffeaf739ba in () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0 #4 0x00007ffff11fc321 in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #5 0x00007ffff3748590 in start_thread (arg=0x7fffea22c640) at pthread_create.c:463 #6 0x00007ffff54fb223 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 3 (Thread 0x7fffeaa2d640 (LWP 27327)): #0 0x00007ffff54ef66f in __GI___poll (fds=0x5555557cee30, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007ffff11d286e in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007ffff11d29a3 in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007ffff11d29f1 in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007ffff11fc321 in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #5 0x00007ffff3748590 in start_thread (arg=0x7fffeaa2d640) at pthread_create.c:463 #6 0x00007ffff54fb223 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 2 (Thread 0x7fffec759640 (LWP 27326)): #0 0x00007ffff54ef66f in __GI___poll (fds=0x7fffec751888, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007ffff04abc1a in () at /usr/lib/x86_64-linux-gnu/libxcb.so.1 #2 0x00007ffff04ad90a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1 #3 0x00007fffecfc4338 in () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5 #4 0x00007ffff397ea41 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007ffff3748590 in start_thread (arg=0x7fffec759640) at pthread_create.c:463 #6 0x00007ffff54fb223 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 1 (Thread 0x7fffed6a1b80 (LWP 27309)): #0 0x00007ffff466fcb2 in () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #1 0x00007ffff4653880 in QWidget::clearFocus() () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #2 0x00007ffff4654948 in QWidget::~QWidget() () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #3 0x00007ffff47c532d in QStatusBar::~QStatusBar() () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #4 0x00007ffff3b8a18e in QObjectPrivate::deleteChildren() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007ffff4654a66 in QWidget::~QWidget() () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #6 0x00007ffff7d83f1d in octave::file_editor_tab::~file_editor_tab() (this=0x555557327040, __in_chrg=) at ../libgui/src/m-editor/file-editor-tab.cc:275 #7 0x00007ffff7d93cdf in octave::file_editor::handle_tab_ready_to_close() (this=0x555555f51210) at ../libgui/src/m-editor/file-editor.cc:531 #8 0x00007ffff3b962e6 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #9 0x00007ffff7d83977 in octave::file_editor_tab::check_file_modified(bool) (this=0x555557327040, remove=remove@entry=false) at ../libgui/src/m-editor/file-editor-tab.cc:1711 #10 0x00007ffff7d93b1d in octave::file_editor::check_closing() (this=0x555555f51210) at ../libgui/src/m-editor/file-editor.cc:491 #11 0x00007ffff7dc663d in octave::qt_interpreter_events::confirm_shutdown_octave() (this=0x5555557cb960) at ../libgui/src/qt-interpreter-events.cc:632 #12 0x00007ffff3b8c651 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #13 0x00007ffff4618013 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #14 0x00007ffff7dc3b7b in octave::octave_qapplication::notify(QObject*, QEvent*) (this=0x5555556763a0, receiver=, ev=) at ../libgui/src/octave-qobject.cc:133 #15 0x00007ffff3b601ca in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #16 0x00007ffff3b62bc1 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #17 0x00007ffff3bb81c7 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #18 0x00007ffff11d262b in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #19 0x00007ffff11d28d8 in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #20 0x00007ffff11d29a3 in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #21 0x00007ffff3bb7843 in QEventDispatcherGlib::processEvents(QFlags) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #22 0x00007ffff3b5ea4b in QEventLoop::exec(QFlags) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #23 0x00007ffff3b66fc6 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #24 0x00007ffff7dc3643 in octave::base_qobject::exec() (this=this@entry=0x7fffffffb7d0) at ../libgui/src/octave-qobject.cc:327 #25 0x00007ffff7dce7a1 in octave::qt_application::execute() (this=0x7fffffffb9d0) at ../libgui/src/qt-application.cc:73 #26 0x0000555555556531 in main(int, char**) (argc=9, argv=0x7fffffffbd08) at ../src/main-gui.cc:131