I hope the debugging with gdb.txt helps. I have cut normal exits and
normal creation of new threads as program goes on. Please let me know
if any more info. is needed.

-- 
          Regards,
          Shirish Agarwal  शिरीष अग्रवाल
  My quotes in this email licensed under CC 3.0
http://creativecommons.org/licenses/by-nc/3.0/
http://flossexperiences.wordpress.com
EB80 462B 08E1 A0DE A73A  2C2F 9F3D C7A4 E1C4 D2D8
[$] gdb qbittorrent                                                             
                                                    [6:13:00]
GNU gdb (Debian 7.12-6) 7.12.0.20161007-git
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
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<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from qbittorrent...Reading symbols from 
/usr/lib/debug/.build-id/00/d1f26ff29cae66bd58e99ebf5ebc6cd3fea248.debug...done.
done.
(gdb) set logging on
Copying output to gdb.txt.
(gdb) set pagination 0
(gdb) handle SIG33 pass nostop noprint
Signal        Stop      Print   Pass to program Description
SIG33         No        No      Yes             Real-time event 33
(gdb) run
Starting program: /usr/bin/qbittorrent 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffea9a9700 (LWP 3824)]
[New Thread 0x7fffdfc2c700 (LWP 3825)]
.....
QXcbConnection: XCB error: 3 (BadWindow), sequence: 4813, resource id: 
12743136, major code: 40 (TranslateCoords), minor code: 0
[New Thread 0x7fffb5e7e700 (LWP 3986)]
 (You also get stuff like above)

Gtk-Message: GtkDialog mapped without a transient parent. This is discouraged. 
(As well as this)

QXcbConnection: XCB error: 3 (BadWindow), sequence: 27625, resource id: 
13147413, major code: 40 (TranslateCoords), minor code: 0
pure virtual method called
terminate called without an active exception

Thread 1 "qbittorrent" received signal SIGABRT, Aborted.
__GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
51      ../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
(gdb) bt
#0  0x00007ffff53e3fcf in __GI_raise (sig=sig@entry=6) at 
../sysdeps/unix/sysv/linux/raise.c:51
#1  0x00007ffff53e53fa in __GI_abort () at abort.c:89
#2  0x00007ffff5cfcbb5 in __gnu_cxx::__verbose_terminate_handler() () at 
/usr/lib/x86_64-linux-gnu/libstdc++.so.6
#3  0x00007ffff5cfa986 in  () at /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#4  0x00007ffff5cfa9d1 in  () at /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#5  0x00007ffff5cfb72f in  () at /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#6  0x0000555555695b89 in BitTorrent::Session::handleAlert(libtorrent::alert*) 
(this=this@entry=0x55555623dbf0, a=0x7fffc097b530) at 
../../src/base/bittorrent/session.cpp:2363
#7  0x0000555555695e4b in BitTorrent::Session::readAlerts() 
(this=0x55555623dbf0) at ../../src/base/bittorrent/session.cpp:2353
#8  0x00005555557f1055 in BitTorrent::Session::qt_static_metacall(QObject*, 
QMetaObject::Call, int, void**) (_o=<optimized out>, _c=<optimized out>, 
_id=<optimized out>, _a=<optimized out>) at moc_session.cpp:293
#9  0x00007ffff64b0c41 in QObject::event(QEvent*) () at 
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007ffff6ecdbec in QApplicationPrivate::notify_helper(QObject*, QEvent*) 
() at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007ffff6ed5381 in QApplication::notify(QObject*, QEvent*) () at 
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#12 0x000055555562a252 in Application::notify(QObject*, QEvent*) 
(this=<optimized out>, receiver=0x55555623dbf0, event=<optimized out>) at 
../../src/app/application.cpp:497
#13 0x00007ffff6484850 in QCoreApplication::notifyInternal2(QObject*, QEvent*) 
() at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007ffff6486fed in QCoreApplicationPrivate::sendPostedEvents(QObject*, 
int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007ffff64d7fb3 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007ffff2988a17 in g_main_dispatch (context=0x7fffe40016f0) at 
././glib/gmain.c:3234
#17 0x00007ffff2988a17 in g_main_context_dispatch 
(context=context@entry=0x7fffe40016f0) at ././glib/gmain.c:3899
#18 0x00007ffff2988c80 in g_main_context_iterate 
(context=context@entry=0x7fffe40016f0, block=block@entry=1, 
dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3972
#19 0x00007ffff2988d2c in g_main_context_iteration (context=0x7fffe40016f0, 
may_block=1) at ././glib/gmain.c:4033
#20 0x00007ffff64d83bf in 
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () 
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007ffff648283a in 
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at 
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007ffff648aedc in QCoreApplication::exec() () at 
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x000055555562d09c in Application::exec(QStringList const&) 
(this=0x555555d5c770, params=...) at ../../src/app/application.cpp:442
#24 0x000055555561eaf0 in main(int, char**) (argc=<optimized out>, 
argv=<optimized out>) at ../../src/app/main.cpp:269
(gdb) bt full
#0  0x00007ffff53e3fcf in __GI_raise (sig=sig@entry=6) at 
../sysdeps/unix/sysv/linux/raise.c:51
        set = {__val = {0, 140737353776208, 140737488344192, 6384440047, 
140737353775352, 140737488344176, 140737317005302, 252833149, 4294967295, 
140737353775352, 140737307704792, 140737352952272, 140737353775352, 
140737488344240, 140737317003198, 3290176423}}
        pid = <optimized out>
        tid = <optimized out>
#1  0x00007ffff53e53fa in __GI_abort () at abort.c:89
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x6b6361422d6d696c, 
sa_sigaction = 0x6b6361422d6d696c}, sa_mask = {__val = {7023764259023581301, 
45, 140737318091440, 45, 45, 140737311437888, 140737308147518, 140737311454496, 
45, 45, 140737308575501, 45, 140737311459152, 0, 140737311459072, 
140737311454496}}, sa_flags = 1445190640, sa_restorer = 0x7fffc097b530}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007ffff5cfcbb5 in __gnu_cxx::__verbose_terminate_handler() () at 
/usr/lib/x86_64-linux-gnu/libstdc++.so.6
#3  0x00007ffff5cfa986 in  () at /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#4  0x00007ffff5cfa9d1 in  () at /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#5  0x00007ffff5cfb72f in  () at /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#6  0x0000555555695b89 in BitTorrent::Session::handleAlert(libtorrent::alert*) 
(this=this@entry=0x55555623dbf0, a=0x7fffc097b530) at 
../../src/base/bittorrent/session.cpp:2363
        __PRETTY_FUNCTION__ = "void 
BitTorrent::Session::handleAlert(libtorrent::alert*)"
#7  0x0000555555695e4b in BitTorrent::Session::readAlerts() 
(this=0x55555623dbf0) at ../../src/base/bittorrent/session.cpp:2353
        a = <optimized out>
        __for_range = std::vector of length 4, capacity 4 = {0x7fffc097b4c0, 
0x7fffc097b530, 0x7fffc097b5b8, 0x7fffc097b640}
        alerts = std::vector of length 4, capacity 4 = {0x7fffc097b4c0, 
0x7fffc097b530, 0x7fffc097b5b8, 0x7fffc097b640}
#8  0x00005555557f1055 in BitTorrent::Session::qt_static_metacall(QObject*, 
QMetaObject::Call, int, void**) (_o=<optimized out>, _c=<optimized out>, 
_id=<optimized out>, _a=<optimized out>) at moc_session.cpp:293
        _t = <optimized out>
#9  0x00007ffff64b0c41 in QObject::event(QEvent*) () at 
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007ffff6ecdbec in QApplicationPrivate::notify_helper(QObject*, QEvent*) 
() at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007ffff6ed5381 in QApplication::notify(QObject*, QEvent*) () at 
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#12 0x000055555562a252 in Application::notify(QObject*, QEvent*) 
(this=<optimized out>, receiver=0x55555623dbf0, event=<optimized out>) at 
../../src/app/application.cpp:497
#13 0x00007ffff6484850 in QCoreApplication::notifyInternal2(QObject*, QEvent*) 
() at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007ffff6486fed in QCoreApplicationPrivate::sendPostedEvents(QObject*, 
int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007ffff64d7fb3 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007ffff2988a17 in g_main_dispatch (context=0x7fffe40016f0) at 
././glib/gmain.c:3234
        dispatch = 0x7ffff64d7fa0
        prev_source = 0x0
        was_in_call = 0
        user_data = 0x0
        callback = 0x0
        cb_funcs = <optimized out>
        cb_data = <optimized out>
        need_destroy = <optimized out>
        source = 0x55555606deb0
        current = 0x555555dd2990
        i = 0
#17 0x00007ffff2988a17 in g_main_context_dispatch 
(context=context@entry=0x7fffe40016f0) at ././glib/gmain.c:3899
#18 0x00007ffff2988c80 in g_main_context_iterate 
(context=context@entry=0x7fffe40016f0, block=block@entry=1, 
dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3972
        max_priority = 2147483647
        timeout = 13
        some_ready = 1
        nfds = 6
        allocated_nfds = 6
        fds = <optimized out>
#19 0x00007ffff2988d2c in g_main_context_iteration (context=0x7fffe40016f0, 
may_block=1) at ././glib/gmain.c:4033
        retval = <optimized out>
#20 0x00007ffff64d83bf in 
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () 
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007ffff648283a in 
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at 
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007ffff648aedc in QCoreApplication::exec() () at 
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x000055555562d09c in Application::exec(QStringList const&) 
(this=0x555555d5c770, params=...) at ../../src/app/application.cpp:442
#24 0x000055555561eaf0 in main(int, char**) (argc=<optimized out>, 
argv=<optimized out>) at ../../src/app/main.cpp:269
        isOneArg = <optimized out>
        appId = {static null = {<No data fields>}, d = 0x555555d5c720}
        app = {d = 0x555555d5c770}
        params = {showHelp = false, showVersion = false, noSplash = false, 
webUiPort = 8080, torrents = {<QList<QString>> = 
{<QListSpecialMethods<QString>> = {<No data fields>}, {p = {static shared_null 
= {ref = {atomic = {_q_value = {<std::__atomic_base<int>> = {static 
_S_alignment = 4, _M_i = -1}, <No data fields>}}}, alloc = 0, begin = 0, end = 
0, array = {0x0}}, d = 0x7ffff654e040 <QListData::shared_null>}, d = 
0x7ffff654e040 <QListData::shared_null>}}, <No data fields>}, unknownParameter 
= {static null = {<No data fields>}, d = 0x7ffff654cf40 
<QArrayData::shared_null>}}
(gdb) thread apply all bt

Thread 51 (Thread 0x7fff92903700 (LWP 11353)):
#0  0x00007ffff549063d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffff2988c16 in g_main_context_poll (priority=<optimized out>, 
n_fds=1, fds=0x7fffd8002e60, timeout=<optimized out>, context=0x555557ff8910) 
at ././glib/gmain.c:4271
#2  0x00007ffff2988c16 in g_main_context_iterate 
(context=context@entry=0x555557ff8910, block=block@entry=1, 
dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3967
#3  0x00007ffff2988d2c in g_main_context_iteration (context=0x555557ff8910, 
may_block=1) at ././glib/gmain.c:4033
#4  0x00007fff9406946d in  () at 
/usr/lib/x86_64-linux-gnu/gio/modules/libdconfsettings.so
#5  0x00007ffff29b04f5 in g_thread_proxy (data=0x555557fc5ad0) at 
././glib/gthread.c:784
#6  0x00007ffff5ff3494 in start_thread (arg=0x7fff92903700) at 
pthread_create.c:333
#7  0x00007ffff5499a8f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 15 (Thread 0x7fffb667f700 (LWP 3851)):
#0  0x00007ffff549063d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffff2988c16 in g_main_context_poll (priority=<optimized out>, 
n_fds=1, fds=0x7fffa46410f0, timeout=<optimized out>, context=0x7fffa4000990) 
at ././glib/gmain.c:4271
#2  0x00007ffff2988c16 in g_main_context_iterate 
(context=context@entry=0x7fffa4000990, block=block@entry=1, 
dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3967
#3  0x00007ffff2988d2c in g_main_context_iteration (context=0x7fffa4000990, 
may_block=1) at ././glib/gmain.c:4033
#4  0x00007ffff64d83bf in 
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () 
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ffff648283a in 
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at 
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ffff62b2f73 in QThread::exec() () at 
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007ffff62b7c28 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007ffff5ff3494 in start_thread (arg=0x7fffb667f700) at 
pthread_create.c:333
#9  0x00007ffff5499a8f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 14 (Thread 0x7fffb70e9700 (LWP 3850)):
#0  0x00007ffff5ffc7dd in nanosleep () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffff635c06d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007ffff62b6fa8 in QThread::msleep(unsigned long) () at 
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00005555556e2475 in (anonymous namespace)::SleeperThread::msleep 
(msecs=<optimized out>) at ../../src/base/utils/misc.cpp:628
#4  0x00005555556e2475 in Utils::Misc::msleep(unsigned long) (msecs=<optimized 
out>) at ../../src/base/utils/misc.cpp:629
#5  0x0000555555748967 in SpeedWidget::update() (this=<optimized out>) at 
../../src/gui/properties/speedwidget.cpp:155
#6  0x0000555555749d3c in QtConcurrent::RunFunctionTask<void>::run() 
(this=0x555557285c70) at 
/usr/include/x86_64-linux-gnu/qt5/QtConcurrent/qtconcurrentrunbase.h:136
#7  0x00007ffff62b3fcf in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007ffff62b7c28 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007ffff5ff3494 in start_thread (arg=0x7fffb70e9700) at 
pthread_create.c:333
#10 0x00007ffff5499a8f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 13 (Thread 0x7fffc8ff9700 (LWP 3839)):
#0  0x00007ffff549063d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffff2988c16 in g_main_context_poll (priority=<optimized out>, 
n_fds=1, fds=0x7fffbc0012d0, timeout=<optimized out>, context=0x7fffbc000990) 
at ././glib/gmain.c:4271
#2  0x00007ffff2988c16 in g_main_context_iterate 
(context=context@entry=0x7fffbc000990, block=block@entry=1, 
dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3967
#3  0x00007ffff2988d2c in g_main_context_iteration (context=0x7fffbc000990, 
may_block=1) at ././glib/gmain.c:4033
#4  0x00007ffff64d83bf in 
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () 
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ffff648283a in 
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at 
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ffff62b2f73 in QThread::exec() () at 
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007ffff62b7c28 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007ffff5ff3494 in start_thread (arg=0x7fffc8ff9700) at 
pthread_create.c:333
#9  0x00007ffff5499a8f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 12 (Thread 0x7fffc97fa700 (LWP 3837)):
#0  0x00007ffff5ff915f in pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ffff76bc122 in 
boost::asio::detail::posix_event::wait<boost::asio::detail::scoped_lock<boost::asio::detail::posix_mutex>
 >(boost::asio::detail::scoped_lock<boost::asio::detail::posix_mutex>&) 
(lock=..., this=0x55555618e448) at 
/usr/include/boost/asio/detail/posix_event.hpp:106
#2  0x00007ffff76bc122 in 
boost::asio::detail::task_io_service::do_run_one(boost::asio::detail::scoped_lock<boost::asio::detail::posix_mutex>&,
 boost::asio::detail::task_io_service_thread_info&, boost::system::error_code 
const&) (ec=..., this_thread=..., lock=..., this=0x55555618e3f0) at 
/usr/include/boost/asio/detail/impl/task_io_service.ipp:380
#3  0x00007ffff76bc122 in 
boost::asio::detail::task_io_service::run(boost::system::error_code&) (ec=..., 
this=0x55555618e3f0) at 
/usr/include/boost/asio/detail/impl/task_io_service.ipp:149
#4  0x00007ffff76bc122 in boost::asio::io_service::run() (this=<optimized out>) 
at /usr/include/boost/asio/impl/io_service.ipp:59
#5  0x00007ffff76bc122 in 
boost::asio::detail::resolver_service_base::work_io_service_runner::operator()()
 (this=<optimized out>) at 
/usr/include/boost/asio/detail/impl/resolver_service_base.ipp:32
#6  0x00007ffff76bc122 in 
boost::asio::detail::posix_thread::func<boost::asio::detail::resolver_service_base::work_io_service_runner>::run()
 (this=<optimized out>) at /usr/include/boost/asio/detail/posix_thread.hpp:82
#7  0x00007ffff769b2af in 
boost::asio::detail::boost_asio_detail_posix_thread_function(void*) 
(arg=0x7fffc0002690) at /usr/include/boost/asio/detail/impl/posix_thread.ipp:64
#8  0x00007ffff5ff3494 in start_thread (arg=0x7fffc97fa700) at 
pthread_create.c:333
#9  0x00007ffff5499a8f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 11 (Thread 0x7fffc9ffb700 (LWP 3836)):
#0  0x00007ffff5ff915f in pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ffff781ee28 in 
libtorrent::condition_variable::wait(boost::asio::detail::scoped_lock<boost::asio::detail::posix_mutex>&)
 (this=<optimized out>, l=...) at ../../src/thread.cpp:77
#2  0x00007ffff769ab03 in libtorrent::disk_io_thread::thread_fun(int, 
libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_service::work>) (this=0x5555564306a8, 
thread_id=3, type=libtorrent::disk_io_thread::hasher_thread, w=...) at 
../../src/disk_io_thread.cpp:3259
#3  0x00007ffff769b969 in boost::_mfi::mf3<void, libtorrent::disk_io_thread, 
int, libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_service::work> 
>::operator()(libtorrent::disk_io_thread*, int, 
libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_service::work>) const (a3=..., a2=<optimized 
out>, a1=<optimized out>, p=<optimized out>, this=<optimized out>) at 
/usr/include/boost/bind/mem_fn_template.hpp:393
#4  0x00007ffff769b969 in 
boost::_bi::list4<boost::_bi::value<libtorrent::disk_io_thread*>, 
boost::_bi::value<int>, 
boost::_bi::value<libtorrent::disk_io_thread::thread_type_t>, 
boost::_bi::value<boost::shared_ptr<boost::asio::io_service::work> > 
>::operator()<boost::_mfi::mf3<void, libtorrent::disk_io_thread, int, 
libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_service::work> >, 
boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf3<void, 
libtorrent::disk_io_thread, int, libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_service::work> >&, boost::_bi::list0&, int) 
(a=<synthetic pointer>..., f=..., this=<optimized out>) at 
/usr/include/boost/bind/bind.hpp:463
#5  0x00007ffff769b969 in boost::_bi::bind_t<void, boost::_mfi::mf3<void, 
libtorrent::disk_io_thread, int, libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_service::work> >, 
boost::_bi::list4<boost::_bi::value<libtorrent::disk_io_thread*>, 
boost::_bi::value<int>, 
boost::_bi::value<libtorrent::disk_io_thread::thread_type_t>, 
boost::_bi::value<boost::shared_ptr<boost::asio::io_service::work> > > 
>::operator()() (this=<optimized out>) at /usr/include/boost/bind/bind.hpp:1294
#6  0x00007ffff769b969 in 
boost::asio::detail::posix_thread::func<boost::_bi::bind_t<void, 
boost::_mfi::mf3<void, libtorrent::disk_io_thread, int, 
libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_service::work> >, 
boost::_bi::list4<boost::_bi::value<libtorrent::disk_io_thread*>, 
boost::_bi::value<int>, 
boost::_bi::value<libtorrent::disk_io_thread::thread_type_t>, 
boost::_bi::value<boost::shared_ptr<boost::asio::io_service::work> > > > 
>::run() (this=<optimized out>) at 
/usr/include/boost/asio/detail/posix_thread.hpp:82
#7  0x00007ffff769b2af in 
boost::asio::detail::boost_asio_detail_posix_thread_function(void*) 
(arg=0x7fffc0001dc0) at /usr/include/boost/asio/detail/impl/posix_thread.ipp:64
#8  0x00007ffff5ff3494 in start_thread (arg=0x7fffc9ffb700) at 
pthread_create.c:333
#9  0x00007ffff5499a8f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 10 (Thread 0x7fffca7fc700 (LWP 3835)):
#0  0x00007ffff5ff915f in pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ffff781ee28 in 
libtorrent::condition_variable::wait(boost::asio::detail::scoped_lock<boost::asio::detail::posix_mutex>&)
 (this=<optimized out>, l=...) at ../../src/thread.cpp:77
#2  0x00007ffff769a9fa in libtorrent::disk_io_thread::thread_fun(int, 
libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_service::work>) (this=0x5555564306a8, 
thread_id=2, type=libtorrent::disk_io_thread::generic_thread, w=...) at 
../../src/disk_io_thread.cpp:3242
#3  0x00007ffff769b969 in boost::_mfi::mf3<void, libtorrent::disk_io_thread, 
int, libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_service::work> 
>::operator()(libtorrent::disk_io_thread*, int, 
libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_service::work>) const (a3=..., a2=<optimized 
out>, a1=<optimized out>, p=<optimized out>, this=<optimized out>) at 
/usr/include/boost/bind/mem_fn_template.hpp:393
#4  0x00007ffff769b969 in 
boost::_bi::list4<boost::_bi::value<libtorrent::disk_io_thread*>, 
boost::_bi::value<int>, 
boost::_bi::value<libtorrent::disk_io_thread::thread_type_t>, 
boost::_bi::value<boost::shared_ptr<boost::asio::io_service::work> > 
>::operator()<boost::_mfi::mf3<void, libtorrent::disk_io_thread, int, 
libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_service::work> >, 
boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf3<void, 
libtorrent::disk_io_thread, int, libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_service::work> >&, boost::_bi::list0&, int) 
(a=<synthetic pointer>..., f=..., this=<optimized out>) at 
/usr/include/boost/bind/bind.hpp:463
#5  0x00007ffff769b969 in boost::_bi::bind_t<void, boost::_mfi::mf3<void, 
libtorrent::disk_io_thread, int, libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_service::work> >, 
boost::_bi::list4<boost::_bi::value<libtorrent::disk_io_thread*>, 
boost::_bi::value<int>, 
boost::_bi::value<libtorrent::disk_io_thread::thread_type_t>, 
boost::_bi::value<boost::shared_ptr<boost::asio::io_service::work> > > 
>::operator()() (this=<optimized out>) at /usr/include/boost/bind/bind.hpp:1294
#6  0x00007ffff769b969 in 
boost::asio::detail::posix_thread::func<boost::_bi::bind_t<void, 
boost::_mfi::mf3<void, libtorrent::disk_io_thread, int, 
libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_service::work> >, 
boost::_bi::list4<boost::_bi::value<libtorrent::disk_io_thread*>, 
boost::_bi::value<int>, 
boost::_bi::value<libtorrent::disk_io_thread::thread_type_t>, 
boost::_bi::value<boost::shared_ptr<boost::asio::io_service::work> > > > 
>::run() (this=<optimized out>) at 
/usr/include/boost/asio/detail/posix_thread.hpp:82
#7  0x00007ffff769b2af in 
boost::asio::detail::boost_asio_detail_posix_thread_function(void*) 
(arg=0x7fffc0001b60) at /usr/include/boost/asio/detail/impl/posix_thread.ipp:64
#8  0x00007ffff5ff3494 in start_thread (arg=0x7fffca7fc700) at 
pthread_create.c:333
#9  0x00007ffff5499a8f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 9 (Thread 0x7fffcaffd700 (LWP 3834)):
#0  0x00007ffff5ff915f in pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ffff781ee28 in 
libtorrent::condition_variable::wait(boost::asio::detail::scoped_lock<boost::asio::detail::posix_mutex>&)
 (this=<optimized out>, l=...) at ../../src/thread.cpp:77
#2  0x00007ffff769a9fa in libtorrent::disk_io_thread::thread_fun(int, 
libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_service::work>) (this=0x5555564306a8, 
thread_id=1, type=libtorrent::disk_io_thread::generic_thread, w=...) at 
../../src/disk_io_thread.cpp:3242
#3  0x00007ffff769b969 in boost::_mfi::mf3<void, libtorrent::disk_io_thread, 
int, libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_service::work> 
>::operator()(libtorrent::disk_io_thread*, int, 
libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_service::work>) const (a3=..., a2=<optimized 
out>, a1=<optimized out>, p=<optimized out>, this=<optimized out>) at 
/usr/include/boost/bind/mem_fn_template.hpp:393
#4  0x00007ffff769b969 in 
boost::_bi::list4<boost::_bi::value<libtorrent::disk_io_thread*>, 
boost::_bi::value<int>, 
boost::_bi::value<libtorrent::disk_io_thread::thread_type_t>, 
boost::_bi::value<boost::shared_ptr<boost::asio::io_service::work> > 
>::operator()<boost::_mfi::mf3<void, libtorrent::disk_io_thread, int, 
libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_service::work> >, 
boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf3<void, 
libtorrent::disk_io_thread, int, libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_service::work> >&, boost::_bi::list0&, int) 
(a=<synthetic pointer>..., f=..., this=<optimized out>) at 
/usr/include/boost/bind/bind.hpp:463
#5  0x00007ffff769b969 in boost::_bi::bind_t<void, boost::_mfi::mf3<void, 
libtorrent::disk_io_thread, int, libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_service::work> >, 
boost::_bi::list4<boost::_bi::value<libtorrent::disk_io_thread*>, 
boost::_bi::value<int>, 
boost::_bi::value<libtorrent::disk_io_thread::thread_type_t>, 
boost::_bi::value<boost::shared_ptr<boost::asio::io_service::work> > > 
>::operator()() (this=<optimized out>) at /usr/include/boost/bind/bind.hpp:1294
#6  0x00007ffff769b969 in 
boost::asio::detail::posix_thread::func<boost::_bi::bind_t<void, 
boost::_mfi::mf3<void, libtorrent::disk_io_thread, int, 
libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_service::work> >, 
boost::_bi::list4<boost::_bi::value<libtorrent::disk_io_thread*>, 
boost::_bi::value<int>, 
boost::_bi::value<libtorrent::disk_io_thread::thread_type_t>, 
boost::_bi::value<boost::shared_ptr<boost::asio::io_service::work> > > > 
>::run() (this=<optimized out>) at 
/usr/include/boost/asio/detail/posix_thread.hpp:82
#7  0x00007ffff769b2af in 
boost::asio::detail::boost_asio_detail_posix_thread_function(void*) 
(arg=0x7fffc00018c0) at /usr/include/boost/asio/detail/impl/posix_thread.ipp:64
#8  0x00007ffff5ff3494 in start_thread (arg=0x7fffcaffd700) at 
pthread_create.c:333
#9  0x00007ffff5499a8f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 8 (Thread 0x7fffcb7fe700 (LWP 3833)):
#0  0x00007ffff5ff915f in pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ffff781ee28 in 
libtorrent::condition_variable::wait(boost::asio::detail::scoped_lock<boost::asio::detail::posix_mutex>&)
 (this=<optimized out>, l=...) at ../../src/thread.cpp:77
#2  0x00007ffff769a9fa in libtorrent::disk_io_thread::thread_fun(int, 
libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_service::work>) (this=0x5555564306a8, 
thread_id=0, type=libtorrent::disk_io_thread::generic_thread, w=...) at 
../../src/disk_io_thread.cpp:3242
#3  0x00007ffff769b969 in boost::_mfi::mf3<void, libtorrent::disk_io_thread, 
int, libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_service::work> 
>::operator()(libtorrent::disk_io_thread*, int, 
libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_service::work>) const (a3=..., a2=<optimized 
out>, a1=<optimized out>, p=<optimized out>, this=<optimized out>) at 
/usr/include/boost/bind/mem_fn_template.hpp:393
#4  0x00007ffff769b969 in 
boost::_bi::list4<boost::_bi::value<libtorrent::disk_io_thread*>, 
boost::_bi::value<int>, 
boost::_bi::value<libtorrent::disk_io_thread::thread_type_t>, 
boost::_bi::value<boost::shared_ptr<boost::asio::io_service::work> > 
>::operator()<boost::_mfi::mf3<void, libtorrent::disk_io_thread, int, 
libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_service::work> >, 
boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf3<void, 
libtorrent::disk_io_thread, int, libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_service::work> >&, boost::_bi::list0&, int) 
(a=<synthetic pointer>..., f=..., this=<optimized out>) at 
/usr/include/boost/bind/bind.hpp:463
#5  0x00007ffff769b969 in boost::_bi::bind_t<void, boost::_mfi::mf3<void, 
libtorrent::disk_io_thread, int, libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_service::work> >, 
boost::_bi::list4<boost::_bi::value<libtorrent::disk_io_thread*>, 
boost::_bi::value<int>, 
boost::_bi::value<libtorrent::disk_io_thread::thread_type_t>, 
boost::_bi::value<boost::shared_ptr<boost::asio::io_service::work> > > 
>::operator()() (this=<optimized out>) at /usr/include/boost/bind/bind.hpp:1294
#6  0x00007ffff769b969 in 
boost::asio::detail::posix_thread::func<boost::_bi::bind_t<void, 
boost::_mfi::mf3<void, libtorrent::disk_io_thread, int, 
libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_service::work> >, 
boost::_bi::list4<boost::_bi::value<libtorrent::disk_io_thread*>, 
boost::_bi::value<int>, 
boost::_bi::value<libtorrent::disk_io_thread::thread_type_t>, 
boost::_bi::value<boost::shared_ptr<boost::asio::io_service::work> > > > 
>::run() (this=<optimized out>) at 
/usr/include/boost/asio/detail/posix_thread.hpp:82
#7  0x00007ffff769b2af in 
boost::asio::detail::boost_asio_detail_posix_thread_function(void*) 
(arg=0x7fffc0001610) at /usr/include/boost/asio/detail/impl/posix_thread.ipp:64
#8  0x00007ffff5ff3494 in start_thread (arg=0x7fffcb7fe700) at 
pthread_create.c:333
#9  0x00007ffff5499a8f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 7 (Thread 0x7fffcbfff700 (LWP 3830)):
#0  0x00007ffff549a083 in epoll_wait () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffff76ba4ef in boost::asio::detail::epoll_reactor::run(bool, 
boost::asio::detail::op_queue<boost::asio::detail::task_io_service_operation>&) 
(this=0x5555561a54b0, block=block@entry=true, ops=...) at 
/usr/include/boost/asio/detail/impl/epoll_reactor.ipp:392
#2  0x00007ffff77998ff in 
boost::asio::detail::task_io_service::do_run_one(boost::asio::detail::scoped_lock<boost::asio::detail::posix_mutex>&,
 boost::asio::detail::task_io_service_thread_info&, boost::system::error_code 
const&) (ec=..., this_thread=..., lock=..., this=0x555556122470) at 
/usr/include/boost/asio/detail/impl/task_io_service.ipp:356
#3  0x00007ffff77998ff in 
boost::asio::detail::task_io_service::run(boost::system::error_code&) (ec=..., 
this=0x555556122470) at 
/usr/include/boost/asio/detail/impl/task_io_service.ipp:149
#4  0x00007ffff77998ff in boost::asio::io_service::run() (this=<optimized out>) 
at /usr/include/boost/asio/impl/io_service.ipp:59
#5  0x00007ffff769b2af in 
boost::asio::detail::boost_asio_detail_posix_thread_function(void*) 
(arg=0x5555562b8630) at /usr/include/boost/asio/detail/impl/posix_thread.ipp:64
#6  0x00007ffff5ff3494 in start_thread (arg=0x7fffcbfff700) at 
pthread_create.c:333
#7  0x00007ffff5499a8f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 6 (Thread 0x7fffd4e1f700 (LWP 3829)):
#0  0x00007ffff549063d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffff2988c16 in g_main_context_poll (priority=<optimized out>, 
n_fds=1, fds=0x7fffc40012d0, timeout=<optimized out>, context=0x7fffc4000990) 
at ././glib/gmain.c:4271
#2  0x00007ffff2988c16 in g_main_context_iterate 
(context=context@entry=0x7fffc4000990, block=block@entry=1, 
dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3967
#3  0x00007ffff2988d2c in g_main_context_iteration (context=0x7fffc4000990, 
may_block=1) at ././glib/gmain.c:4033
#4  0x00007ffff64d83bf in 
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () 
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ffff648283a in 
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at 
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ffff62b2f73 in QThread::exec() () at 
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007ffff62b7c28 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007ffff5ff3494 in start_thread (arg=0x7fffd4e1f700) at 
pthread_create.c:333
#9  0x00007ffff5499a8f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 5 (Thread 0x7fffd5ec5700 (LWP 3828)):
#0  0x00007ffff549063d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffff2988c16 in g_main_context_poll (priority=<optimized out>, 
n_fds=4, fds=0x7fffcc016860, timeout=<optimized out>, context=0x7fffcc000990) 
at ././glib/gmain.c:4271
#2  0x00007ffff2988c16 in g_main_context_iterate 
(context=context@entry=0x7fffcc000990, block=block@entry=1, 
dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3967
#3  0x00007ffff2988d2c in g_main_context_iteration (context=0x7fffcc000990, 
may_block=1) at ././glib/gmain.c:4033
#4  0x00007ffff64d83bf in 
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () 
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ffff648283a in 
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at 
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ffff62b2f73 in QThread::exec() () at 
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007ffff7f30305 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#8  0x00007ffff62b7c28 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007ffff5ff3494 in start_thread (arg=0x7fffd5ec5700) at 
pthread_create.c:333
#10 0x00007ffff5499a8f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 4 (Thread 0x7fffdf42b700 (LWP 3826)):
#0  0x00007ffff549063d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffff2988c16 in g_main_context_poll (priority=<optimized out>, 
n_fds=6, fds=0x7fffd00042e0, timeout=<optimized out>, context=0x555555df0210) 
at ././glib/gmain.c:4271
#2  0x00007ffff2988c16 in g_main_context_iterate (context=0x555555df0210, 
block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at 
././glib/gmain.c:3967
#3  0x00007ffff2988fa2 in g_main_loop_run (loop=0x555555dfb240) at 
././glib/gmain.c:4168
#4  0x00007fffe2b93286 in gdbus_shared_thread_func (user_data=0x555555df69d0) 
at ././gio/gdbusprivate.c:252
#5  0x00007ffff29b04f5 in g_thread_proxy (data=0x555555dc9d40) at 
././glib/gthread.c:784
#6  0x00007ffff5ff3494 in start_thread (arg=0x7fffdf42b700) at 
pthread_create.c:333
#7  0x00007ffff5499a8f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 3 (Thread 0x7fffdfc2c700 (LWP 3825)):
#0  0x00007ffff549063d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffff2988c16 in g_main_context_poll (priority=<optimized out>, 
n_fds=2, fds=0x7fffd80008c0, timeout=<optimized out>, context=0x555555debe40) 
at ././glib/gmain.c:4271
#2  0x00007ffff2988c16 in g_main_context_iterate 
(context=context@entry=0x555555debe40, block=block@entry=1, 
dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3967
#3  0x00007ffff2988d2c in g_main_context_iteration (context=0x555555debe40, 
may_block=may_block@entry=1) at ././glib/gmain.c:4033
#4  0x00007ffff2988d71 in glib_worker_main (data=<optimized out>) at 
././glib/gmain.c:5824
#5  0x00007ffff29b04f5 in g_thread_proxy (data=0x555555dc9ca0) at 
././glib/gthread.c:784
#6  0x00007ffff5ff3494 in start_thread (arg=0x7fffdfc2c700) at 
pthread_create.c:333
#7  0x00007ffff5499a8f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 2 (Thread 0x7fffea9a9700 (LWP 3824)):
#0  0x00007ffff549063d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffff0a7a150 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007ffff0a7bee9 in xcb_wait_for_event () at 
/usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fffed110b89 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007ffff62b7c28 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ffff5ff3494 in start_thread (arg=0x7fffea9a9700) at 
pthread_create.c:333
#6  0x00007ffff5499a8f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 1 (Thread 0x7ffff7e3c900 (LWP 3817)):
#0  0x00007ffff53e3fcf in __GI_raise (sig=sig@entry=6) at 
../sysdeps/unix/sysv/linux/raise.c:51
#1  0x00007ffff53e53fa in __GI_abort () at abort.c:89
#2  0x00007ffff5cfcbb5 in __gnu_cxx::__verbose_terminate_handler() () at 
/usr/lib/x86_64-linux-gnu/libstdc++.so.6
#3  0x00007ffff5cfa986 in  () at /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#4  0x00007ffff5cfa9d1 in  () at /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#5  0x00007ffff5cfb72f in  () at /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#6  0x0000555555695b89 in BitTorrent::Session::handleAlert(libtorrent::alert*) 
(this=this@entry=0x55555623dbf0, a=0x7fffc097b530) at 
../../src/base/bittorrent/session.cpp:2363
#7  0x0000555555695e4b in BitTorrent::Session::readAlerts() 
(this=0x55555623dbf0) at ../../src/base/bittorrent/session.cpp:2353
#8  0x00005555557f1055 in BitTorrent::Session::qt_static_metacall(QObject*, 
QMetaObject::Call, int, void**) (_o=<optimized out>, _c=<optimized out>, 
_id=<optimized out>, _a=<optimized out>) at moc_session.cpp:293
#9  0x00007ffff64b0c41 in QObject::event(QEvent*) () at 
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007ffff6ecdbec in QApplicationPrivate::notify_helper(QObject*, QEvent*) 
() at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007ffff6ed5381 in QApplication::notify(QObject*, QEvent*) () at 
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#12 0x000055555562a252 in Application::notify(QObject*, QEvent*) 
(this=<optimized out>, receiver=0x55555623dbf0, event=<optimized out>) at 
../../src/app/application.cpp:497
#13 0x00007ffff6484850 in QCoreApplication::notifyInternal2(QObject*, QEvent*) 
() at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007ffff6486fed in QCoreApplicationPrivate::sendPostedEvents(QObject*, 
int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007ffff64d7fb3 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007ffff2988a17 in g_main_dispatch (context=0x7fffe40016f0) at 
././glib/gmain.c:3234
#17 0x00007ffff2988a17 in g_main_context_dispatch 
(context=context@entry=0x7fffe40016f0) at ././glib/gmain.c:3899
#18 0x00007ffff2988c80 in g_main_context_iterate 
(context=context@entry=0x7fffe40016f0, block=block@entry=1, 
dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3972
#19 0x00007ffff2988d2c in g_main_context_iteration (context=0x7fffe40016f0, 
may_block=1) at ././glib/gmain.c:4033
#20 0x00007ffff64d83bf in 
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () 
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007ffff648283a in 
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at 
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007ffff648aedc in QCoreApplication::exec() () at 
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x000055555562d09c in Application::exec(QStringList const&) 
(this=0x555555d5c770, params=...) at ../../src/app/application.cpp:442
#24 0x000055555561eaf0 in main(int, char**) (argc=<optimized out>, 
argv=<optimized out>) at ../../src/app/main.cpp:269
(gdb) quit
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        Inferior 1 [process 3817] will be killed.

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