View difference between Paste ID: gJfrNhL2 and rT4phY37

 (gdb) thread apply all bt
 
 Thread 26 (Thread 0x7efbf10cb700 (LWP 28418)):
 #0  0x00007efc1b487bf0 in __GI___nanosleep (requested_time=0x7efbf10ca810, remaining=0x0) at ../sysdeps/unix/sysv/linux/nanosleep.c:28
 #1  0x00007efbd42eba08 in  () at /home/rgareus/.lv2/meters.lv2/meters_glui.so
 #2  0x00007efc1b47dfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
 #3  0x00007efc19ad34cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
 
 Thread 25 (Thread 0x7efbf1ba2700 (LWP 28417)):
 #0  0x00007efc1b48400c in futex_wait_cancelable (private=0, expected=0, futex_word=0x55f9a8ad3488) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
 #1  0x00007efc1b48400c in __pthread_cond_wait_common (abstime=0x0, mutex=0x55f9a8ad3438, cond=0x55f9a8ad3460) at pthread_cond_wait.c:502
 #2  0x00007efc1b48400c in __pthread_cond_wait (cond=0x55f9a8ad3460, mutex=0x55f9a8ad3438) at pthread_cond_wait.c:655
 #3  0x00007efbb11fce03 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
 #4  0x00007efbb11fcb57 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
 #5  0x00007efc1b47dfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
 #6  0x00007efc19ad34cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
 
 Thread 24 (Thread 0x7efbb27fc700 (LWP 28414)):
 #0  0x00007efc1b487bf0 in __GI___nanosleep (requested_time=0x7efbb27fb6c0, remaining=0x7efbb27fb6d0) at ../sysdeps/unix/sysv/linux/nanosleep.c:28
 #1  0x00007efc1c99babf in g_usleep () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 #2  0x00007efc1eac0be2 in ARDOUR::AutomationWatch::thread() (this=0x55f9a8ae0c00) at ../libs/ardour/automation_watch.cc:194
 #3  0x00007efc1eac6011 in boost::_mfi::mf0<void, ARDOUR::AutomationWatch>::operator()(ARDOUR::AutomationWatch*) const (this=0x55f9a8c9cf60, p=0x55f9a8ae0c00)
     at /usr/include/boost/bind/mem_fn_template.hpp:49
 #4  0x00007efc1eac5bf5 in boost::_bi::list1<boost::_bi::value<ARDOUR::AutomationWatch*> >::operator()<boost::_mfi::mf0<void, ARDOUR::AutomationWatch>, boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf0<void, ARDOUR::AutomationWatch>&, boost::_bi::list0&, int) (this=0x55f9a8c9cf70, f=..., a=...) at /usr/include/boost/bind/bind.hpp:259
 #5  0x00007efc1eac54b3 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AutomationWatch>, boost::_bi::list1<boost::_bi::value<ARDOUR::AutomationWatch*> > >::operator()()
     (this=0x55f9a8c9cf60) at /usr/include/boost/bind/bind.hpp:1294
 #6  0x00007efc1eac5444 in sigc::adaptor_functor<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AutomationWatch>, boost::_bi::list1<boost::_bi::value<ARDOUR::AutomationWatch*> > > >::operator()() const (this=0x55f9a8c9cf60) at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
 #7  0x00007efc1eac4e94 in sigc::internal::slot_call0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AutomationWatch>, boost::_bi::list1<boost::_bi::value<ARDOUR::AutomationWatch*> > >, void>::call_it(sigc::internal::slot_rep*) (rep=0x55f9a8c9cf30) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:136
 #8  0x00007efc1cae9d5a in  () at /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1
 #9  0x00007efc1c99a415 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 #10 0x00007efc1b47dfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
 #11 0x00007efc19ad34cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
 
 Thread 23 (Thread 0x7efbb2ffd700 (LWP 28413)):
 #0  0x00007efc1b48400c in futex_wait_cancelable (private=0, expected=0, futex_word=0x55f9aa5e1218) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
 #1  0x00007efc1b48400c in __pthread_cond_wait_common (abstime=0x0, mutex=0x55f9aa5e11c8, cond=0x55f9aa5e11f0) at pthread_cond_wait.c:502
 #2  0x00007efc1b48400c in __pthread_cond_wait (cond=0x55f9aa5e11f0, mutex=0x55f9aa5e11c8) at pthread_cond_wait.c:655
 #3  0x00007efc1f08a12b in ARDOUR::Session::auto_connect_thread_run() (this=0x55f9aa5df400) at ../libs/ardour/session.cc:6894
 #4  0x00007efc1f089e26 in ARDOUR::Session::auto_connect_thread(void*) (arg=0x55f9aa5df400) at ../libs/ardour/session.cc:6841
 #5  0x00007efc1b47dfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
 #6  0x00007efc19ad34cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
 
 Thread 22 (Thread 0x7efbb37fe700 (LWP 28412)):
 #0  0x00007efc1b48400c in futex_wait_cancelable (private=0, expected=0, futex_word=0x55f9aa5e11a8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
 #1  0x00007efc1b48400c in __pthread_cond_wait_common (abstime=0x0, mutex=0x55f9aa5e1158, cond=0x55f9aa5e1180) at pthread_cond_wait.c:502
 #2  0x00007efc1b48400c in __pthread_cond_wait (cond=0x55f9aa5e1180, mutex=0x55f9aa5e1158) at pthread_cond_wait.c:655
 #3  0x00007efc1f0ff907 in ARDOUR::Session::emit_thread_run() (this=0x55f9aa5df400) at ../libs/ardour/session_process.cc:1088
 #4  0x00007efc1f0ff8a4 in ARDOUR::Session::emit_thread(void*) (arg=0x55f9aa5df400) at ../libs/ardour/session_process.cc:1077
 #5  0x00007efc1b47dfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
 --Type <RET> for more, q to quit, c to continue without paging--
 #6  0x00007efc19ad34cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
 
 Thread 21 (Thread 0x7efbd54bb700 (LWP 28411)):
 #0  0x00007efc19ac8819 in __GI___poll (fds=0x7efbac193480, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
 #1  0x00007efc1c972136 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 #2  0x00007efc1c9724c2 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 #3  0x00007efc1cff86fc in BaseUI::main_thread() (this=0x55f9aa9aa460) at ../libs/pbd/base_ui.cc:98
 #4  0x00007efc1cffc760 in sigc::bound_mem_functor0<void, BaseUI>::operator()() const (this=0x55f9aa9ab0c8) at /usr/include/sigc++-2.0/sigc++/functors/mem_fun.h:1991
 #5  0x00007efc1cffc3ec in sigc::adaptor_functor<sigc::bound_mem_functor0<void, BaseUI> >::operator()() const (this=0x55f9aa9ab0c0)
     at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
 #6  0x00007efc1cffbe4b in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, BaseUI>, void>::call_it(sigc::internal::slot_rep*) (rep=0x55f9aa9ab090)
     at /usr/include/sigc++-2.0/sigc++/functors/slot.h:136
 #7  0x00007efc1cae9d5a in  () at /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1
 #8  0x00007efc1c99a415 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 #9  0x00007efc1b47dfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
 #10 0x00007efc19ad34cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
 
 Thread 20 (Thread 0x7efbd7ee7700 (LWP 28409)):
 #0  0x00007efc19ac8819 in __GI___poll (fds=0x7efbc0192890, nfds=4, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
 #1  0x00007efc1c972136 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 #2  0x00007efc1c9724c2 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 #3  0x00007efc1cff86fc in BaseUI::main_thread() (this=0x55f9ab07aee0) at ../libs/pbd/base_ui.cc:98
 #4  0x00007efc1cffc760 in sigc::bound_mem_functor0<void, BaseUI>::operator()() const (this=0x55f9a77e3358) at /usr/include/sigc++-2.0/sigc++/functors/mem_fun.h:1991
 #5  0x00007efc1cffc3ec in sigc::adaptor_functor<sigc::bound_mem_functor0<void, BaseUI> >::operator()() const (this=0x55f9a77e3350)
     at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
 #6  0x00007efc1cffbe4b in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, BaseUI>, void>::call_it(sigc::internal::slot_rep*) (rep=0x55f9a77e3320)
     at /usr/include/sigc++-2.0/sigc++/functors/slot.h:136
 #7  0x00007efc1cae9d5a in  () at /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1
 #8  0x00007efc1c99a415 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 #9  0x00007efc1b47dfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
 #10 0x00007efc19ad34cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
 
 Thread 19 (Thread 0x7efbd7f62800 (LWP 28408)):
 #0  0x00007efc19ac8819 in __GI___poll (fds=0x7efbd7f60f38, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
 #1  0x00007efc1d00dbde in CrossThreadChannel::poll_for_request() (this=0x55f9a7dbc2c8) at ../libs/pbd/crossthread.posix.cc:102
 #2  0x00007efc1d00dc47 in CrossThreadChannel::receive(char&, bool) (this=0x55f9a7dbc2c8, msg=@0x7efbd7f60fff: 0 '\000', wait=true) at ../libs/pbd/crossthread.posix.cc:123
 #3  0x00007efc1ead6364 in ARDOUR::Butler::thread_work() (this=0x55f9a7dbc230) at ../libs/ardour/butler.cc:172
 #4  0x00007efc1ead60e7 in ARDOUR::Butler::_thread_work(void*) (arg=0x55f9a7dbc230) at ../libs/ardour/butler.cc:153
 #5  0x00007efc1d02fa7a in fake_thread_start(void*) (arg=0x55f9a820cdc0) at ../libs/pbd/pthread_utils.cc:107
 #6  0x00007efc1b47dfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
 #7  0x00007efc19ad34cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
 
 Thread 18 (Thread 0x7efbd7f7cd80 (LWP 28407)):
 #0  0x00007efc1b486896 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x55f9ab030d60) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
 #1  0x00007efc1b486896 in do_futex_wait (sem=sem@entry=0x55f9ab030d60, abstime=0x0) at sem_waitcommon.c:111
 #2  0x00007efc1b486988 in __new_sem_wait_slow (sem=0x55f9ab030d60, abstime=0x0) at sem_waitcommon.c:181
 #3  0x00007efc1ebef0b6 in PBD::Semaphore::wait() (this=0x55f9ab030d60) at ../libs/pbd/pbd/semutils.h:64
 #4  0x00007efc1ebec878 in ARDOUR::Graph::run_one() (this=0x55f9ab030cb0) at ../libs/ardour/graph.cc:426
 #5  0x00007efc1ebecd30 in ARDOUR::Graph::helper_thread() (this=0x55f9ab030cb0) at ../libs/ardour/graph.cc:470
 #6  0x00007efc1ebf3199 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator()(ARDOUR::Graph*) const (this=0x7efbd7f7be78, p=0x55f9ab030cb0) at /usr/include/boost/bind/mem_fn_template.hpp:49
 #7  0x00007efc1ebf2973 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf0<--Type <RET> for more, q to quit, c to continue without paging--
 void, ARDOUR::Graph>&, boost::_bi::list0&, int) (this=0x7efbd7f7be88, f=..., a=...) at /usr/include/boost/bind/bind.hpp:259
 #8  0x00007efc1ebf1ddd in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator()() (this=0x7efbd7f7be78)
     at /usr/include/boost/bind/bind.hpp:1294
 #9  0x00007efc1ebf1698 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >, void>::invoke(boost::detail::function::function_buffer&) (function_obj_ptr=...) at /usr/include/boost/function/function_template.hpp:159
 #10 0x000055f9a3b29f24 in boost::function0<void>::operator()() const (this=0x7efbd7f7be70) at /usr/include/boost/function/function_template.hpp:768
 #11 0x00007efc05e657f1 in ARDOUR::DummyAudioBackend::dummy_process_thread(void*) (arg=0x55f9ab1d85d0) at ../libs/backends/dummy/dummy_audiobackend.cc:560
 #12 0x00007efc1b47dfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
 #13 0x00007efc19ad34cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
 
 Thread 17 (Thread 0x7efbd7f96d80 (LWP 28406)):
 #0  0x00007efc1b486896 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x55f9ab030d60) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
 #1  0x00007efc1b486896 in do_futex_wait (sem=sem@entry=0x55f9ab030d60, abstime=0x0) at sem_waitcommon.c:111
 #2  0x00007efc1b486988 in __new_sem_wait_slow (sem=0x55f9ab030d60, abstime=0x0) at sem_waitcommon.c:181
 #3  0x00007efc1ebef0b6 in PBD::Semaphore::wait() (this=0x55f9ab030d60) at ../libs/pbd/pbd/semutils.h:64
 #4  0x00007efc1ebec878 in ARDOUR::Graph::run_one() (this=0x55f9ab030cb0) at ../libs/ardour/graph.cc:426
 #5  0x00007efc1ebecd30 in ARDOUR::Graph::helper_thread() (this=0x55f9ab030cb0) at ../libs/ardour/graph.cc:470
 #6  0x00007efc1ebf3199 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator()(ARDOUR::Graph*) const (this=0x7efbd7f95e78, p=0x55f9ab030cb0) at /usr/include/boost/bind/mem_fn_template.hpp:49
 #7  0x00007efc1ebf2973 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf0<void, ARDOUR::Graph>&, boost::_bi::list0&, int) (this=0x7efbd7f95e88, f=..., a=...) at /usr/include/boost/bind/bind.hpp:259
 #8  0x00007efc1ebf1ddd in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator()() (this=0x7efbd7f95e78)
     at /usr/include/boost/bind/bind.hpp:1294
 #9  0x00007efc1ebf1698 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >, void>::invoke(boost::detail::function::function_buffer&) (function_obj_ptr=...) at /usr/include/boost/function/function_template.hpp:159
 #10 0x000055f9a3b29f24 in boost::function0<void>::operator()() const (this=0x7efbd7f95e70) at /usr/include/boost/function/function_template.hpp:768
 #11 0x00007efc05e657f1 in ARDOUR::DummyAudioBackend::dummy_process_thread(void*) (arg=0x55f9ab354760) at ../libs/backends/dummy/dummy_audiobackend.cc:560
 #12 0x00007efc1b47dfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
 #13 0x00007efc19ad34cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
 
 Thread 16 (Thread 0x7efbd7fb0d80 (LWP 28405)):
 #0  0x00007efc1b486896 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x55f9ab030d60) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
 #1  0x00007efc1b486896 in do_futex_wait (sem=sem@entry=0x55f9ab030d60, abstime=0x0) at sem_waitcommon.c:111
 #2  0x00007efc1b486988 in __new_sem_wait_slow (sem=0x55f9ab030d60, abstime=0x0) at sem_waitcommon.c:181
 #3  0x00007efc1ebef0b6 in PBD::Semaphore::wait() (this=0x55f9ab030d60) at ../libs/pbd/pbd/semutils.h:64
 #4  0x00007efc1ebec878 in ARDOUR::Graph::run_one() (this=0x55f9ab030cb0) at ../libs/ardour/graph.cc:426
 #5  0x00007efc1ebecd30 in ARDOUR::Graph::helper_thread() (this=0x55f9ab030cb0) at ../libs/ardour/graph.cc:470
 #6  0x00007efc1ebf3199 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator()(ARDOUR::Graph*) const (this=0x7efbd7fafe78, p=0x55f9ab030cb0) at /usr/include/boost/bind/mem_fn_template.hpp:49
 #7  0x00007efc1ebf2973 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf0<void, ARDOUR::Graph>&, boost::_bi::list0&, int) (this=0x7efbd7fafe88, f=..., a=...) at /usr/include/boost/bind/bind.hpp:259
 #8  0x00007efc1ebf1ddd in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator()() (this=0x7efbd7fafe78)
     at /usr/include/boost/bind/bind.hpp:1294
 #9  0x00007efc1ebf1698 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >, void>::invoke(boost::detail::function::function_buffer&) (function_obj_ptr=...) at /usr/include/boost/function/function_template.hpp:159
 #10 0x000055f9a3b29f24 in boost::function0<void>::operator()() const (this=0x7efbd7fafe70) at /usr/include/boost/function/function_template.hpp:768
 #11 0x00007efc05e657f1 in ARDOUR::DummyAudioBackend::dummy_process_thread(void*) (arg=0x55f9a87c7330) at ../libs/backends/dummy/dummy_audiobackend.cc:560
 #12 0x00007efc1b47dfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
 #13 0x00007efc19ad34cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
 
 Thread 15 (Thread 0x7efbd7fcad80 (LWP 28404)):
 #0  0x00007efc1b486896 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x55f9ab030d88) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
 #1  0x00007efc1b486896 in do_futex_wait (sem=sem@entry=0x55f9ab030d88, abstime=0x0) at sem_waitcommon.c:111
 --Type <RET> for more, q to quit, c to continue without paging--
 #2  0x00007efc1b486988 in __new_sem_wait_slow (sem=0x55f9ab030d88, abstime=0x0) at sem_waitcommon.c:181
 #3  0x00007efc1ebef0b6 in PBD::Semaphore::wait() (this=0x55f9ab030d88) at ../libs/pbd/pbd/semutils.h:64
 #4  0x00007efc1ebebc1b in ARDOUR::Graph::reached_terminal_node() (this=0x55f9ab030cb0) at ../libs/ardour/graph.cc:301
 #5  0x00007efc1ebf3839 in ARDOUR::GraphNode::finish(int) (this=0x55f9a77eff88, chain=1) at ../libs/ardour/graphnode.cc:73
 #6  0x00007efc1ebef120 in ARDOUR::GraphNode::run(int) (this=0x55f9a77eff88, chain=1) at ../libs/ardour/ardour/graphnode.h:63
 #7  0x00007efc1ebec9e6 in ARDOUR::Graph::run_one() (this=0x55f9ab030cb0) at ../libs/ardour/graph.cc:442
 #8  0x00007efc1ebed112 in ARDOUR::Graph::main_thread() (this=0x55f9ab030cb0) at ../libs/ardour/graph.cc:523
 #9  0x00007efc1ebf3199 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator()(ARDOUR::Graph*) const (this=0x7efbd7fc9e78, p=0x55f9ab030cb0) at /usr/include/boost/bind/mem_fn_template.hpp:49
 #10 0x00007efc1ebf2973 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf0<void, ARDOUR::Graph>&, boost::_bi::list0&, int) (this=0x7efbd7fc9e88, f=..., a=...) at /usr/include/boost/bind/bind.hpp:259
 #11 0x00007efc1ebf1ddd in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator()() (this=0x7efbd7fc9e78)
     at /usr/include/boost/bind/bind.hpp:1294
 #12 0x00007efc1ebf1698 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >, void>::invoke(boost::detail::function::function_buffer&) (function_obj_ptr=...) at /usr/include/boost/function/function_template.hpp:159
 #13 0x000055f9a3b29f24 in boost::function0<void>::operator()() const (this=0x7efbd7fc9e70) at /usr/include/boost/function/function_template.hpp:768
 #14 0x00007efc05e657f1 in ARDOUR::DummyAudioBackend::dummy_process_thread(void*) (arg=0x55f9a7a5a110) at ../libs/backends/dummy/dummy_audiobackend.cc:560
 #15 0x00007efc1b47dfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
 #16 0x00007efc19ad34cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
 
 Thread 14 (Thread 0x7efbd7fe4d80 (LWP 28403)):
 #0  0x00007efc1b486896 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x55f9ab2b7cb0) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
 #1  0x00007efc1b486896 in do_futex_wait (sem=sem@entry=0x55f9ab2b7cb0, abstime=0x0) at sem_waitcommon.c:111
 #2  0x00007efc1b486988 in __new_sem_wait_slow (sem=0x55f9ab2b7cb0, abstime=0x0) at sem_waitcommon.c:181
 #3  0x00007efc1ebef0b6 in PBD::Semaphore::wait() (this=0x55f9ab2b7cb0) at ../libs/pbd/pbd/semutils.h:64
 #4  0x00007efc1f04dcdf in ARDOUR::RTTaskList::run() (this=0x55f9ab2b7c80) at ../libs/ardour/rt_tasklist.cc:112
 #5  0x00007efc1f04daca in ARDOUR::RTTaskList::_thread_run(void*) (arg=0x55f9ab2b7c80) at ../libs/ardour/rt_tasklist.cc:66
 #6  0x00007efc1b47dfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
 #7  0x00007efc19ad34cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
 
 Thread 13 (Thread 0x7efbd7ffed80 (LWP 28402)):
 #0  0x00007efc1b486896 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x55f9ab2b7cb0) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
 #1  0x00007efc1b486896 in do_futex_wait (sem=sem@entry=0x55f9ab2b7cb0, abstime=0x0) at sem_waitcommon.c:111
 #2  0x00007efc1b486988 in __new_sem_wait_slow (sem=0x55f9ab2b7cb0, abstime=0x0) at sem_waitcommon.c:181
 #3  0x00007efc1ebef0b6 in PBD::Semaphore::wait() (this=0x55f9ab2b7cb0) at ../libs/pbd/pbd/semutils.h:64
 #4  0x00007efc1f04dcdf in ARDOUR::RTTaskList::run() (this=0x55f9ab2b7c80) at ../libs/ardour/rt_tasklist.cc:112
 #5  0x00007efc1f04daca in ARDOUR::RTTaskList::_thread_run(void*) (arg=0x55f9ab2b7c80) at ../libs/ardour/rt_tasklist.cc:66
 #6  0x00007efc1b47dfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
 #7  0x00007efc19ad34cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
 
 Thread 12 (Thread 0x7efbf002cd80 (LWP 28401)):
 #0  0x00007efc1b486896 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x55f9ab2b7cb0) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
 #1  0x00007efc1b486896 in do_futex_wait (sem=sem@entry=0x55f9ab2b7cb0, abstime=0x0) at sem_waitcommon.c:111
 #2  0x00007efc1b486988 in __new_sem_wait_slow (sem=0x55f9ab2b7cb0, abstime=0x0) at sem_waitcommon.c:181
 #3  0x00007efc1ebef0b6 in PBD::Semaphore::wait() (this=0x55f9ab2b7cb0) at ../libs/pbd/pbd/semutils.h:64
 #4  0x00007efc1f04dcdf in ARDOUR::RTTaskList::run() (this=0x55f9ab2b7c80) at ../libs/ardour/rt_tasklist.cc:112
 #5  0x00007efc1f04daca in ARDOUR::RTTaskList::_thread_run(void*) (arg=0x55f9ab2b7c80) at ../libs/ardour/rt_tasklist.cc:66
 #6  0x00007efc1b47dfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
 #7  0x00007efc19ad34cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
 
 Thread 11 (Thread 0x7efbf111fd80 (LWP 28400)):
 #0  0x00007efc1b486896 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x55f9ab2b7cb0) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
 --Type <RET> for more, q to quit, c to continue without paging--
 #1  0x00007efc1b486896 in do_futex_wait (sem=sem@entry=0x55f9ab2b7cb0, abstime=0x0) at sem_waitcommon.c:111
 #2  0x00007efc1b486988 in __new_sem_wait_slow (sem=0x55f9ab2b7cb0, abstime=0x0) at sem_waitcommon.c:181
 #3  0x00007efc1ebef0b6 in PBD::Semaphore::wait() (this=0x55f9ab2b7cb0) at ../libs/pbd/pbd/semutils.h:64
 #4  0x00007efc1f04dcdf in ARDOUR::RTTaskList::run() (this=0x55f9ab2b7c80) at ../libs/ardour/rt_tasklist.cc:112
 #5  0x00007efc1f04daca in ARDOUR::RTTaskList::_thread_run(void*) (arg=0x55f9ab2b7c80) at ../libs/ardour/rt_tasklist.cc:66
 #6  0x00007efc1b47dfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
 #7  0x00007efc19ad34cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
 
 Thread 10 (Thread 0x7efbf23a3700 (LWP 28390)):
 #0  0x00007efc1b487bf0 in __GI___nanosleep (requested_time=0x7efbf23a26a0, remaining=0x7efbf23a26b0) at ../sysdeps/unix/sysv/linux/nanosleep.c:28
 #1  0x00007efc1c99babf in g_usleep () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 #2  0x00007efc05e69542 in ARDOUR::DummyAudioBackend::main_process_thread() (this=0x55f9a6df8a00) at ../libs/backends/dummy/dummy_audiobackend.cc:1404
 #3  0x00007efc05e65109 in pthread_process(void*) (arg=0x55f9a6df8a00) at ../libs/backends/dummy/dummy_audiobackend.cc:431
 #4  0x00007efc1b47dfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
 #5  0x00007efc19ad34cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
 
 Thread 9 (Thread 0x7efbf33e7700 (LWP 28386)):
 #0  0x00007efc19ac8819 in __GI___poll (fds=0x55f9a6bb3380, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
 #1  0x00007efc1c972136 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 #2  0x00007efc1c9724c2 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 #3  0x00007efc1c1dd266 in  () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
 #4  0x00007efc1c99a415 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 #5  0x00007efc1b47dfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
 #6  0x00007efc19ad34cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
 
 Thread 8 (Thread 0x7efbf3be8700 (LWP 28385)):
 #0  0x00007efc19ac8819 in __GI___poll (fds=0x55f9a6ba9500, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
 #1  0x00007efc1c972136 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 #2  0x00007efc1c97225c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 #3  0x00007efc1c9722a1 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 #4  0x00007efc1c99a415 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 #5  0x00007efc1b47dfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
 #6  0x00007efc19ad34cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
 
 Thread 7 (Thread 0x7efc067a0700 (LWP 28383)):
 #0  0x00007efc19acdf59 in syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
 #1  0x00007efc1c9bbf9f in g_cond_wait () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 #2  0x00007efc1ea69883 in ARDOUR::AudioEngine::do_devicelist_update() (this=0x55f9a6cc64d0) at ../libs/ardour/audioengine.cc:670
 #3  0x00007efc1ea76097 in boost::_mfi::mf0<void, ARDOUR::AudioEngine>::operator()(ARDOUR::AudioEngine*) const (this=0x55f9a6cd91b0, p=0x55f9a6cc64d0)
     at /usr/include/boost/bind/mem_fn_template.hpp:49
 #4  0x00007efc1ea75acb in boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> >::operator()<boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf0<void, ARDOUR::AudioEngine>&, boost::_bi::list0&, int) (this=0x55f9a6cd91c0, f=..., a=...) at /usr/include/boost/bind/bind.hpp:259
 #5  0x00007efc1ea752e7 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >::operator()()
     (this=0x55f9a6cd91b0) at /usr/include/boost/bind/bind.hpp:1294
 #6  0x00007efc1ea74b20 in sigc::adaptor_functor<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > > >::operator()() const (this=0x55f9a6cd91b0) at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
 #7  0x00007efc1ea73e90 in sigc::internal::slot_call0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >, void>::call_it(sigc::internal::slot_rep*) (rep=0x55f9a6cd9180) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:136
 #8  0x00007efc1cae9d5a in  () at /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1
 #9  0x00007efc1c99a415 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 #10 0x00007efc1b47dfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
 --Type <RET> for more, q to quit, c to continue without paging--
 #11 0x00007efc19ad34cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
 
 Thread 6 (Thread 0x7efc077a9700 (LWP 28382)):
 #0  0x00007efc19acdf59 in syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
 #1  0x00007efc1c9bbf9f in g_cond_wait () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 #2  0x00007efc1ea69656 in ARDOUR::AudioEngine::do_reset_backend() (this=0x55f9a6cc64d0) at ../libs/ardour/audioengine.cc:635
 #3  0x00007efc1ea76097 in boost::_mfi::mf0<void, ARDOUR::AudioEngine>::operator()(ARDOUR::AudioEngine*) const (this=0x55f9a6cd9140, p=0x55f9a6cc64d0)
     at /usr/include/boost/bind/mem_fn_template.hpp:49
 #4  0x00007efc1ea75acb in boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> >::operator()<boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf0<void, ARDOUR::AudioEngine>&, boost::_bi::list0&, int) (this=0x55f9a6cd9150, f=..., a=...) at /usr/include/boost/bind/bind.hpp:259
 #5  0x00007efc1ea752e7 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >::operator()()
     (this=0x55f9a6cd9140) at /usr/include/boost/bind/bind.hpp:1294
 #6  0x00007efc1ea74b20 in sigc::adaptor_functor<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > > >::operator()() const (this=0x55f9a6cd9140) at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
 #7  0x00007efc1ea73e90 in sigc::internal::slot_call0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >, void>::call_it(sigc::internal::slot_rep*) (rep=0x55f9a6cd9110) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:136
 #8  0x00007efc1cae9d5a in  () at /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1
 #9  0x00007efc1c99a415 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 #10 0x00007efc1b47dfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
 #11 0x00007efc19ad34cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
 
 Thread 5 (Thread 0x7efc0ddf4700 (LWP 28380)):
 #0  0x00007efc19acdf59 in syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
 #1  0x00007efc1c9bbf9f in g_cond_wait () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 #2  0x00007efc1ea1edbc in ARDOUR::Analyser::work() () at ../libs/ardour/analyser.cc:89
 #3  0x00007efc1ea1ebb0 in analyser_work() () at ../libs/ardour/analyser.cc:54
 #4  0x000055f9a436f7cd in sigc::pointer_functor0<void>::operator()() const (this=0x55f9a6823018) at /usr/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
 #5  0x000055f9a436cc44 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator()() const (this=0x55f9a6823010) at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
 #6  0x000055f9a43691f5 in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it(sigc::internal::slot_rep*) (rep=0x55f9a6822fe0)
     at /usr/include/sigc++-2.0/sigc++/functors/slot.h:136
 #7  0x00007efc1cae9d5a in  () at /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1
 #8  0x00007efc1c99a415 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 #9  0x00007efc1b47dfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
 #10 0x00007efc19ad34cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
 
 Thread 4 (Thread 0x7efc05df4700 (LWP 28379)):
 #0  0x00007efc19acdf59 in syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
 #1  0x00007efc1c9bbf9f in g_cond_wait () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 #2  0x00007efc1f18d3ac in peak_thread_work() () at ../libs/ardour/source_factory.cc:74
 #3  0x000055f9a436f7cd in sigc::pointer_functor0<void>::operator()() const (this=0x55f9a68230a8) at /usr/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
 #4  0x000055f9a436cc44 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator()() const (this=0x55f9a68230a0) at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
 #5  0x000055f9a43691f5 in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it(sigc::internal::slot_rep*) (rep=0x55f9a6823070)
     at /usr/include/sigc++-2.0/sigc++/functors/slot.h:136
 #6  0x00007efc1cae9d5a in  () at /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1
 #7  0x00007efc1c99a415 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 #8  0x00007efc1b47dfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
 #9  0x00007efc19ad34cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
 
 Thread 3 (Thread 0x7efc0e5f5700 (LWP 28378)):
 #0  0x00007efc19acdf59 in syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
 #1  0x00007efc1c9bbf9f in g_cond_wait () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 --Type <RET> for more, q to quit, c to continue without paging--
 #2  0x00007efc1f18d3ac in peak_thread_work() () at ../libs/ardour/source_factory.cc:74
 #3  0x000055f9a436f7cd in sigc::pointer_functor0<void>::operator()() const (this=0x55f9a67cb1b8) at /usr/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
 #4  0x000055f9a436cc44 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator()() const (this=0x55f9a67cb1b0) at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
 #5  0x000055f9a43691f5 in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it(sigc::internal::slot_rep*) (rep=0x55f9a67cb180)
     at /usr/include/sigc++-2.0/sigc++/functors/slot.h:136
 #6  0x00007efc1cae9d5a in  () at /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1
 #7  0x00007efc1c99a415 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 #8  0x00007efc1b47dfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
 #9  0x00007efc19ad34cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
 
 Thread 2 (Thread 0x7efc0edf6700 (LWP 28377)):
 #0  0x00007efc1b487bf0 in __GI___nanosleep (requested_time=0x7efc0edf56e0, remaining=0x7efc0edf56f0) at ../sysdeps/unix/sysv/linux/nanosleep.c:28
 #1  0x00007efc1c99babf in g_usleep () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 #2  0x000055f9a46e2ad7 in gui_event_loop(void*) (ptr=0x0) at ../gtk2_ardour/linux_vst_gui_support.cc:460
 #3  0x00007efc1b47dfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
 #4  0x00007efc19ad34cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
 
 Thread 1 (Thread 0x7efc0f261e00 (LWP 28375)):
 #0  0x00007efc19acdf59 in syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
 #1  0x00007efc1c9bb61c in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 #2  0x000055f9a3b116d0 in Glib::Threads::Mutex::Lock::Lock(Glib::Threads::Mutex&) (this=0x7fff7b64e8a0, mutex=...) at /usr/include/glibmm-2.4/glibmm/threads.h:687
 #3  0x000055f9a4012361 in PBD::Signal2<void, bool, PBD::Controllable::GroupControlDisposition, PBD::OptionalLastValue<void> >::~Signal2() (this=0x55f9a8705180, __in_chrg=<optimized out>)
     at libs/pbd/pbd/signals_generated.h:963
 #4  0x000055f9a4011e88 in PBD::Controllable::~Controllable() (this=0x55f9a8704fc0, __in_chrg=<optimized out>) at ../libs/pbd/pbd/controllable.h:72
 #5  0x00007efc1eab3662 in ARDOUR::AutomationControl::~AutomationControl() (this=0x55f9a8704fc0, __in_chrg=<optimized out>) at ../libs/ardour/automation_control.cc:73
 #6  0x00007efc1ef82680 in ARDOUR::PluginInsert::PluginControl::~PluginControl() (this=0x55f9a8704fc0, __in_chrg=<optimized out>) at ../libs/ardour/ardour/plugin_insert.h:203
 #7  0x00007efc1ef826cc in ARDOUR::PluginInsert::PluginControl::~PluginControl() (this=0x55f9a8704fc0, __in_chrg=<optimized out>) at ../libs/ardour/ardour/plugin_insert.h:203
 #8  0x00007efc1ef82728 in boost::checked_delete<ARDOUR::PluginInsert::PluginControl>(ARDOUR::PluginInsert::PluginControl*) (x=0x55f9a8704fc0) at /usr/include/boost/core/checked_delete.hpp:34
 #9  0x00007efc1ef8710a in boost::detail::sp_counted_impl_p<ARDOUR::PluginInsert::PluginControl>::dispose() (this=0x55f9a8705440) at /usr/include/boost/smart_ptr/detail/sp_counted_impl.hpp:92
 #10 0x000055f9a3b11b11 in boost::detail::sp_counted_base::release() (this=0x55f9a8705440) at /usr/include/boost/smart_ptr/detail/sp_counted_base_std_atomic.hpp:110
 #11 0x000055f9a3b11b87 in boost::detail::shared_count::~shared_count() (this=0x55f9aa9acf48, __in_chrg=<optimized out>) at /usr/include/boost/smart_ptr/detail/shared_count.hpp:426
 #12 0x000055f9a3b432b0 in boost::shared_ptr<ARDOUR::AutomationControl>::~shared_ptr() (this=0x55f9aa9acf40, __in_chrg=<optimized out>) at /usr/include/boost/smart_ptr/shared_ptr.hpp:341
 #13 0x00007efc0d560ec6 in boost::_bi::value<boost::shared_ptr<ARDOUR::AutomationControl> >::~value() (this=0x55f9aa9acf40, __in_chrg=<optimized out>) at /usr/include/boost/bind/bind.hpp:118
 #14 0x00007efc06f7f43c in boost::_bi::storage5<boost::_bi::value<ArdourFeedback*>, boost::_bi::value<unsigned int>, boost::_bi::value<unsigned int>, boost::_bi::value<unsigned int>, boost::_bi::value<boost::shared_ptr<ARDOUR::AutomationControl> > >::~storage5() (this=0x55f9aa9acf28, __in_chrg=<optimized out>) at /usr/include/boost/bind/storage.hpp:223
 #15 0x00007efc06f7f458 in boost::_bi::list5<boost::_bi::value<ArdourFeedback*>, boost::_bi::value<unsigned int>, boost::_bi::value<unsigned int>, boost::_bi::value<unsigned int>, boost::_bi::value<boost::shared_ptr<ARDOUR::AutomationControl> > >::~list5() (this=0x55f9aa9acf28, __in_chrg=<optimized out>) at /usr/include/boost/bind/bind.hpp:487
 #16 0x00007efc06f7f478 in boost::_bi::bind_t<void, PluginParamValueObserver, boost::_bi::list5<boost::_bi::value<ArdourFeedback*>, boost::_bi::value<unsigned int>, boost::_bi::value<unsigned int>, boost::_bi::value<unsigned int>, boost::_bi::value<boost::shared_ptr<ARDOUR::AutomationControl> > > >::~bind_t() (this=0x55f9aa9acf20, __in_chrg=<optimized out>)
     at /usr/include/boost/bind/bind.hpp:1275
 #17 0x00007efc06f86dd7 in boost::detail::function::functor_manager<boost::_bi::bind_t<void, PluginParamValueObserver, boost::_bi::list5<boost::_bi::value<ArdourFeedback*>, boost::_bi::value<unsigned int>, boost::_bi::value<unsigned int>, boost::_bi::value<unsigned int>, boost::_bi::value<boost::shared_ptr<ARDOUR::AutomationControl> > > > >::manager(boost::detail::function::function_buffer const&, boost::detail::function::function_buffer&, boost::detail::function::functor_manager_operation_type, mpl_::bool_<false>)
     (in_buffer=..., out_buffer=..., op=boost::detail::function::destroy_functor_tag) at /usr/include/boost/function/function_base.hpp:358
 #18 0x00007efc06f856ad in boost::detail::function::functor_manager<boost::_bi::bind_t<void, PluginParamValueObserver, boost::_bi::list5<boost::_bi::value<ArdourFeedback*>, boost::_bi::value<unsigned int>, boost::_bi::value<unsigned int>, boost::_bi::value<unsigned int>, boost::_bi::value<boost::shared_ptr<ARDOUR::AutomationControl> > > > >::manager(boost::detail::function::function_buffer const&, boost::detail::function::function_buffer&, boost::detail::function::functor_manager_operation_type, boost::detail::function::function_obj_tag)
     (in_buffer=..., out_buffer=..., op=boost::detail::function::destroy_functor_tag) at /usr/include/boost/function/function_base.hpp:379
 #19 0x00007efc06f83c4b in boost::detail::function::functor_manager<boost::_bi::bind_t<void, PluginParamValueObserver, boost::_bi::list5<boost::_bi::value<ArdourFeedback*>, boost::_bi::value<unsigned int>, boost::_bi::value<unsigned int>, boost::_bi::value<unsigned int>, boost::_bi::value<boost::shared_ptr<ARDOUR::AutomationControl> > > > >::manage(boost::detail::function::function_buffer const&, boost::detail::function::function_buffer&, boost::detail::function::functor_manager_operation_type)
 --Type <RET> for more, q to quit, c to continue without paging--
     (in_buffer=..., out_buffer=..., op=boost::detail::function::destroy_functor_tag) at /usr/include/boost/function/function_base.hpp:407
 #20 0x000055f9a3c2ad55 in boost::detail::function::basic_vtable2<void, bool, PBD::Controllable::GroupControlDisposition>::clear(boost::detail::function::function_buffer&) const (this=
     0x7efc06fa73f0 <boost::function2<void, bool, PBD::Controllable::GroupControlDisposition>::assign_to<boost::_bi::bind_t<void, PluginParamValueObserver, boost::_bi::list5<boost::_bi::value<ArdourFeedback*>, boost::_bi::value<unsigned int>, boost::_bi::value<unsigned int>, boost::_bi::value<unsigned int>, boost::_bi::value<boost::shared_ptr<ARDOUR::AutomationControl> > > > >(boost::_bi::bind_t<void, PluginParamValueObserver, boost::_bi::list5<boost::_bi::value<ArdourFeedback*>, boost::_bi::value<unsigned int>, boost::_bi::value<unsigned int>, boost::_bi::value<unsigned int>, boost::_bi::value<boost::shared_ptr<ARDOUR::AutomationControl> > > >)::stored_vtable>, functor=...) at /usr/include/boost/function/function_template.hpp:510
 #21 0x000055f9a3c29d03 in boost::function2<void, bool, PBD::Controllable::GroupControlDisposition>::clear() (this=0x55f9aa9ac768) at /usr/include/boost/function/function_template.hpp:877
 #22 0x000055f9a3c29308 in boost::function2<void, bool, PBD::Controllable::GroupControlDisposition>::~function2() (this=0x55f9aa9ac768, __in_chrg=<optimized out>)
     at /usr/include/boost/function/function_template.hpp:761
 #23 0x000055f9a3c28f32 in boost::function<void (bool, PBD::Controllable::GroupControlDisposition)>::~function() (this=0x55f9aa9ac768, __in_chrg=<optimized out>)
     at /usr/include/boost/function/function_template.hpp:1050
 #24 0x000055f9a3c29324 in boost::_bi::value<boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> >::~value() (this=0x55f9aa9ac768, __in_chrg=<optimized out>)
     at /usr/include/boost/bind/bind.hpp:118
 #25 0x000055f9a3c29340 in boost::_bi::storage1<boost::_bi::value<boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> > >::~storage1()
     (this=0x55f9aa9ac768, __in_chrg=<optimized out>) at /usr/include/boost/bind/storage.hpp:40
 #26 0x000055f9a3c2935c in boost::_bi::storage2<boost::_bi::value<boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> >, boost::_bi::value<PBD::EventLoop*> >::~storage2()
     (this=0x55f9aa9ac768, __in_chrg=<optimized out>) at /usr/include/boost/bind/storage.hpp:76
 #27 0x000055f9a3c29378 in boost::_bi::storage3<boost::_bi::value<boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> >, boost::_bi::value<PBD::EventLoop*>, boost::_bi::value<PBD::EventLoop::InvalidationRecord*> >::~storage3() (this=0x55f9aa9ac768, __in_chrg=<optimized out>) at /usr/include/boost/bind/storage.hpp:125
 #28 0x000055f9a3c29394 in boost::_bi::storage4<boost::_bi::value<boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> >, boost::_bi::value<PBD::EventLoop*>, boost::_bi::value<PBD::EventLoop::InvalidationRecord*>, boost::arg<1> >::~storage4() (this=0x55f9aa9ac768, __in_chrg=<optimized out>) at /usr/include/boost/bind/storage.hpp:191
 #29 0x000055f9a3c293b0 in boost::_bi::storage5<boost::_bi::value<boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> >, boost::_bi::value<PBD::EventLoop*>, boost::_bi::value<PBD::EventLoop::InvalidationRecord*>, boost::arg<1>, boost::arg<2> >::~storage5() (this=0x55f9aa9ac768, __in_chrg=<optimized out>) at /usr/include/boost/bind/storage.hpp:240
 #30 0x000055f9a3c293cc in boost::_bi::list5<boost::_bi::value<boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> >, boost::_bi::value<PBD::EventLoop*>, boost::_bi::value<PBD::EventLoop::InvalidationRecord*>, boost::arg<1>, boost::arg<2> >::~list5() (this=0x55f9aa9ac768, __in_chrg=<optimized out>) at /usr/include/boost/bind/bind.hpp:487
 #31 0x000055f9a3c293ec in boost::_bi::bind_t<void, void (*)(boost::function<void (bool, PBD::Controllable::GroupControlDisposition)>, PBD::EventLoop*, PBD::EventLoop::InvalidationRecord*, bool, PBD::Controllable::GroupControlDisposition), boost::_bi::list5<boost::_bi::value<boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> >, boost::_bi::value<PBD::EventLoop*>, boost::_bi::value<PBD::EventLoop::InvalidationRecord*>, boost::arg<1>, boost::arg<2> > >::~bind_t() (this=0x55f9aa9ac760, __in_chrg=<optimized out>)
     at /usr/include/boost/bind/bind.hpp:1275
 #32 0x000055f9a3c2f99e in boost::detail::function::functor_manager<boost::_bi::bind_t<void, void (*)(boost::function<void (bool, PBD::Controllable::GroupControlDisposition)>, PBD::EventLoop*, PBD::EventLoop::InvalidationRecord*, bool, PBD::Controllable::GroupControlDisposition), boost::_bi::list5<boost::_bi::value<boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> >, boost::_bi::value<PBD::EventLoop*>, boost::_bi::value<PBD::EventLoop::InvalidationRecord*>, boost::arg<1>, boost::arg<2> > > >::manager(boost::detail::function::function_buffer const&, boost::detail::function::function_buffer&, boost::detail::function::functor_manager_operation_type, mpl_::bool_<false>)
     (in_buffer=..., out_buffer=..., op=boost::detail::function::destroy_functor_tag) at /usr/include/boost/function/function_base.hpp:358
 #33 0x000055f9a3c2e9b6 in boost::detail::function::functor_manager<boost::_bi::bind_t<void, void (*)(boost::function<void (bool, PBD::Controllable::GroupControlDisposition)>, PBD::EventLoop*, PBD::EventLoop::InvalidationRecord*, bool, PBD::Controllable::GroupControlDisposition), boost::_bi::list5<boost::_bi::value<boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> >, boost::_bi::value<PBD::EventLoop*>, boost::_bi::value<PBD::EventLoop::InvalidationRecord*>, boost::arg<1>, boost::arg<2> > > >::manager(boost::detail::function::function_buffer const&, boost::detail::function::function_buffer&, boost::detail::function::functor_manager_operation_type, boost::detail::function::function_obj_tag)
     (in_buffer=..., out_buffer=..., op=boost::detail::function::destroy_functor_tag) at /usr/include/boost/function/function_base.hpp:379
 #34 0x000055f9a3c2d50a in boost::detail::function::functor_manager<boost::_bi::bind_t<void, void (*)(boost::function<void (bool, PBD::Controllable::GroupControlDisposition)>, PBD::EventLoop*, PBD::EventLoop::InvalidationRecord*, bool, PBD::Controllable::GroupControlDisposition), boost::_bi::list5<boost::_bi::value<boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> >, boost::_bi::value<PBD::EventLoop*>, boost::_bi::value<PBD::EventLoop::InvalidationRecord*>, boost::arg<1>, boost::arg<2> > > >::manage(boost::detail::function::function_buffer const&, boost::detail::function::function_buffer&, boost::detail::function::functor_manager_operation_type) (in_buffer=..., out_buffer=..., op=boost::detail::function::destroy_functor_tag)
     at /usr/include/boost/function/function_base.hpp:407
 #35 0x000055f9a3c2ad55 in boost::detail::function::basic_vtable2<void, bool, PBD::Controllable::GroupControlDisposition>::clear(boost::detail::function::function_buffer&) const (this=
     0x55f9a471b9f0 <boost::function2<void, bool, PBD::Controllable::GroupControlDisposition>::assign_to<boost::_bi::bind_t<void, void (*)(boost::function<void (bool, PBD::Controllable::GroupControlDisposition)>, PBD::EventLoop*, PBD::EventLoop::InvalidationRecord*, bool, PBD::Controllable::GroupControlDisposition), boost::_bi::list5<boost::_bi::value<boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> >, boost::_bi::value<PBD::EventLoop*>, boost::_bi::value<PBD::EventLoop::InvalidationRecord*>, boost::arg<1>, boost::arg<2> > > >(boost::_bi::bind_t<void, void (*)(boost::function<void (bool, PBD::Controllable::GroupControlDisposition)>, PBD::EventLoop*, PBD::EventLoop::InvalidationRecord*, bool, PBD::Controllable::GroupControlDisposition), boost::_bi::list5<boost::_bi::value<boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> >, boost::_bi::value<PBD::EventLoop*>, boost::_bi::value<PBD::EventLoop::InvalidationRecord*>, boost::arg<1>, boost::arg<2> > >)::stored_vtable>, functor=...) at /usr/include/boost/function/function_template.hpp:510
 --Type <RET> for more, q to quit, c to continue without paging--
 #36 0x000055f9a3c29d03 in boost::function2<void, bool, PBD::Controllable::GroupControlDisposition>::clear() (this=0x55f9aa9acff0) at /usr/include/boost/function/function_template.hpp:877
 #37 0x000055f9a3c29308 in boost::function2<void, bool, PBD::Controllable::GroupControlDisposition>::~function2() (this=0x55f9aa9acff0, __in_chrg=<optimized out>)
     at /usr/include/boost/function/function_template.hpp:761
 #38 0x000055f9a3c28f32 in boost::function<void (bool, PBD::Controllable::GroupControlDisposition)>::~function() (this=0x55f9aa9acff0, __in_chrg=<optimized out>)
     at /usr/include/boost/function/function_template.hpp:1050
 #39 0x000055f9a3c30426 in std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> >::~pair()
     (this=0x55f9aa9acfe0, __in_chrg=<optimized out>) at /usr/include/c++/8/bits/stl_pair.h:208
 #40 0x000055f9a3c30452 in __gnu_cxx::new_allocator<std::_Rb_tree_node<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> > > >::destroy<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> > >(std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> >*) (this=0x55f9a8705198, __p=0x55f9aa9acfe0) at /usr/include/c++/8/ext/new_allocator.h:140
 #41 0x000055f9a3c2f721 in std::allocator_traits<std::allocator<std::_Rb_tree_node<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> > > > >::destroy<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> > >(std::allocator<std::_Rb_tree_node<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> > > >&, std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> >*) (__a=..., __p=0x55f9aa9acfe0) at /usr/include/c++/8/bits/alloc_traits.h:487
 #42 0x000055f9a3c2e7c7 in std::_Rb_tree<boost::shared_ptr<PBD::Connection>, std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> >, std::_Select1st<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> > >, std::less<boost::shared_ptr<PBD::Connection> >, std::allocator<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> > > >::_M_destroy_node(std::_Rb_tree_node<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> > >*) (this=0x55f9a8705198, __p=0x55f9aa9acfc0)
     at /usr/include/c++/8/bits/stl_tree.h:661
 #43 0x000055f9a3c2d319 in std::_Rb_tree<boost::shared_ptr<PBD::Connection>, std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> >, std::_Select1st<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> > >, std::less<boost::shared_ptr<PBD::Connection> >, std::allocator<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> > > >::_M_drop_node(std::_Rb_tree_node<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> > >*) (this=0x55f9a8705198, __p=0x55f9aa9acfc0)
     at /usr/include/c++/8/bits/stl_tree.h:669
 #44 0x000055f9a4012a50 in std::_Rb_tree<boost::shared_ptr<PBD::Connection>, std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> >, std::_Select1st<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> > >, std::less<boost::shared_ptr<PBD::Connection> >, std::allocator<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> > > >::_M_erase(std::_Rb_tree_node<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> > >*) (this=0x55f9a8705198, __x=0x55f9aa9acfc0)
     at /usr/include/c++/8/bits/stl_tree.h:1874
 #45 0x000055f9a401401e in std::_Rb_tree<boost::shared_ptr<PBD::Connection>, std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> >, std::_Select1st<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> > >, std::less<boost::shared_ptr<PBD::Connection> >, std::allocator<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> > > >::clear()
     (this=0x55f9a8705198) at /usr/include/c++/8/bits/stl_tree.h:1187
 #46 0x000055f9a4013ea8 in std::_Rb_tree<boost::shared_ptr<PBD::Connection>, std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> >, std::_Select1st<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> > >, std::less<boost::shared_ptr<PBD::Connection> >, std::allocator<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> > > >::_M_erase_aux(std::_Rb_tree_const_iterator<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> > >, std::_Rb_tree_const_iterator<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> > >)Python Exception <class 'gdb.error'> No type named std::_Rb_tree_node<struct std::pair<const boost::shared_ptr<PBD::Connection>, boost::function<void(bool, PBD::Controllable::GroupControlDisposition)> >>.:
 Python Exception <class 'gdb.error'> No type named std::_Rb_tree_node<struct std::pair<const boost::shared_ptr<PBD::Connection>, boost::function<void(bool, PBD::Controllable::GroupControlDisposition)> >>.:
  (this=0x55f9a8705198, __first=..., __last=...)
     at /usr/include/c++/8/bits/stl_tree.h:2504
 #47 0x000055f9a4013c54 in std::_Rb_tree<boost::shared_ptr<PBD::Connection>, std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> >, std::_Select1st<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> > >, std::less<boost::shared_ptr<PBD::Connection> >, std::allocator<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> > > >::erase(boost::shared_ptr<PBD::Connection> const&) (this=0x55f9a8705198, __x=...) at /usr/include/c++/8/bits/stl_tree.h:2518
 #48 0x000055f9a4013bd5 in std::map<boost::shared_ptr<PBD::Connection>, boost::function<void (bool, PBD::Controllable::GroupControlDisposition)>, std::less<boost::shared_ptr<PBD::Connection> >, std::allocator<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void (bool, PBD::Controllable::GroupControlDisposition)> > > >::erase(boost::shared_ptr<PBD::Connection> const&) (this=0x55f9a8705198, __x=...) at /usr/include/c++/8/bits/stl_map.h:1068
 #49 0x000055f9a4013ae5 in PBD::Signal2<void, bool, PBD::Controllable::GroupControlDisposition, PBD::OptionalLastValue<void> >::disconnect(boost::shared_ptr<PBD::Connection>)
     (this=0x55f9a8705180, c=...) at libs/pbd/pbd/signals_generated.h:1119
 #50 0x000055f9a3b11cd4 in PBD::Connection::disconnect() (this=0x55f9aa9acd60) at ../libs/pbd/pbd/signals.h:94
 #51 0x000055f9a3b11d86 in PBD::ScopedConnection::disconnect() (this=0x55f9aa9ad020) at ../libs/pbd/pbd/signals.h:153
 #52 0x000055f9a3b11d46 in PBD::ScopedConnection::~ScopedConnection() (this=0x55f9aa9ad020, __in_chrg=<optimized out>) at ../libs/pbd/pbd/signals.h:147
 --Type <RET> for more, q to quit, c to continue without paging--
 #53 0x00007efc1d036db7 in PBD::ScopedConnectionList::drop_connections() (this=0x55f9aa9aa5c0) at ../libs/pbd/signals.cc:47
 #54 0x00007efc06f7d8e4 in ArdourFeedback::stop() (this=0x55f9aa9aa5a8) at ../libs/surfaces/websockets/feedback.cc:97
 #55 0x00007efc06f48f15 in ArdourSurface::ArdourWebsockets::stop() (this=0x55f9aa9aa2d0) at ../libs/surfaces/websockets/ardour_websockets.cc:129
 #56 0x00007efc06f48aa3 in ArdourSurface::ArdourWebsockets::~ArdourWebsockets() (this=0x55f9aa9aa2d0, __in_chrg=<optimized out>) at ../libs/surfaces/websockets/ardour_websockets.cc:55
 #57 0x00007efc06f48b6c in ArdourSurface::ArdourWebsockets::~ArdourWebsockets() (this=0x55f9aa9aa2d0, __in_chrg=<optimized out>) at ../libs/surfaces/websockets/ardour_websockets.cc:56
 #58 0x00007efc1eae7a2d in ARDOUR::ControlProtocolManager::drop_protocols() (this=0x55f9a67610e0) at ../libs/ardour/control_protocol_manager.cc:204
 #59 0x00007efc1f06341c in ARDOUR::Session::destroy() (this=0x55f9aa5df400) at ../libs/ardour/session.cc:560
 #60 0x00007efc1f0624f0 in ARDOUR::Session::~Session() (this=0x55f9aa5df400, __in_chrg=<optimized out>) at ../libs/ardour/session.cc:457
 #61 0x00007efc1f062ce0 in ARDOUR::Session::~Session() (this=0x55f9aa5df400, __in_chrg=<optimized out>) at ../libs/ardour/session.cc:458
 #62 0x000055f9a3b377d2 in ARDOUR_UI::finish() (this=0x55f9a6cfd6f0) at ../gtk2_ardour/ardour_ui.cc:1036
 #63 0x000055f9a3b659a4 in sigc::bound_mem_functor0<void, ARDOUR_UI>::operator()() const (this=0x55f9a6951f60) at /usr/include/sigc++-2.0/sigc++/functors/mem_fun.h:1991
 #64 0x000055f9a3b5db4e in sigc::adaptor_functor<sigc::bound_mem_functor0<void, ARDOUR_UI> >::operator()() const (this=0x55f9a6951f58)
     at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
 #65 0x000055f9a3bb63a0 in sigc::retype_return_functor<void, sigc::bound_mem_functor0<void, ARDOUR_UI> >::operator()() (this=0x55f9a6951f50)
     at /usr/include/sigc++-2.0/sigc++/adaptors/retype_return.h:269
 #66 0x000055f9a3bb48f9 in sigc::internal::slot_call0<sigc::retype_return_functor<void, sigc::bound_mem_functor0<void, ARDOUR_UI> >, void>::call_it(sigc::internal::slot_rep*)
     (rep=0x55f9a6951f20) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:136
 #67 0x00007efc1caf7dc8 in Glib::SignalProxyNormal::slot0_void_callback(_GObject*, void*) () at /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1
 #68 0x00007efc1ca53c8d in g_closure_invoke () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 #69 0x00007efc1ca66e64 in  () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 #70 0x00007efc1ca702be in g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 #71 0x00007efc1ca7097f in g_signal_emit () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 #72 0x00007efc1c542190 in  () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
 #73 0x00007efc1d1ae16e in Gtkmm2ext::Bindings::activate(Gtkmm2ext::KeyboardKey, Gtkmm2ext::Bindings::Operation) (this=0x55f9a6d4c920, kb=..., op=Gtkmm2ext::Bindings::Press)
     at ../libs/gtkmm2ext/bindings.cc:498
 #74 0x000055f9a3bbd603 in ARDOUR_UI::key_press_focus_accelerator_handler(Gtk::Window&, _GdkEventKey*, Gtkmm2ext::Bindings*) (this=0x55f9a6cfd6f0, window=..., ev=0x55f9a9613580, bindings=0x0)
     at ../gtk2_ardour/ardour_ui_keys.cc:230
 #75 0x000055f9a3bbcb45 in ARDOUR_UI::key_event_handler(_GdkEventKey*, Gtk::Window*) (this=0x55f9a6cfd6f0, ev=0x55f9a9613580, event_window=0x55f9a6cfda10)
     at ../gtk2_ardour/ardour_ui_keys.cc:103
 #76 0x000055f9a3b7445c in sigc::bound_mem_functor2<bool, ARDOUR_UI, _GdkEventKey*, Gtk::Window*>::operator()(_GdkEventKey* const&, Gtk::Window* const&) const
     (this=0x55f9ab28a210, _A_a1=@0x7fff7b650838: 0x55f9a9613580, _A_a2=@0x55f9ab28a230: 0x55f9a6cfda10) at /usr/include/sigc++-2.0/sigc++/functors/mem_fun.h:2143
 #77 0x000055f9a3b6f633 in sigc::adaptor_functor<sigc::bound_mem_functor2<bool, ARDOUR_UI, _GdkEventKey*, Gtk::Window*> >::operator()<_GdkEventKey* const&, Gtk::Window*&>(_GdkEventKey* const&, Gtk::Window*&) const (this=0x55f9ab28a208, _A_arg1=@0x7fff7b650838: 0x55f9a9613580, _A_arg2=@0x55f9ab28a230: 0x55f9a6cfda10) at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:108
 #78 0x000055f9a3b68a59 in sigc::bind_functor<-1, sigc::bound_mem_functor2<bool, ARDOUR_UI, _GdkEventKey*, Gtk::Window*>, Gtk::Window*, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil>::operator()<_GdkEventKey* const&>(_GdkEventKey* const&) (this=0x55f9ab28a200, _A_arg1=@0x7fff7b650838: 0x55f9a9613580) at /usr/include/sigc++-2.0/sigc++/adaptors/bind.h:1136
 #79 0x000055f9a3b6076c in sigc::internal::slot_call1<sigc::bind_functor<-1, sigc::bound_mem_functor2<bool, ARDOUR_UI, _GdkEventKey*, Gtk::Window*>, Gtk::Window*, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil>, bool, _GdkEventKey*>::call_it(sigc::internal::slot_rep*, _GdkEventKey* const&) (rep=0x55f9ab28a1d0, a_1=@0x7fff7b650838: 0x55f9a9613580)
     at /usr/include/sigc++-2.0/sigc++/functors/slot.h:170
 #80 0x00007efc1bc92acb in  () at /usr/lib/x86_64-linux-gnu/libgtkmm-2.4.so.1
 #81 0x00007efc1c6001eb in  () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
 #82 0x00007efc1ca53c8d in g_closure_invoke () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 #83 0x00007efc1ca67365 in  () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 #84 0x00007efc1ca6f9ab in g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 #85 0x00007efc1ca7097f in g_signal_emit () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 #86 0x00007efc1c716cac in  () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
 #87 0x00007efc1c5fe55d in gtk_propagate_event () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
 #88 0x00007efc1c5fe87b in gtk_main_do_event () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
 #89 0x00007efc1c471bac in  () at /usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0
 #90 0x00007efc1c971f2e in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 #91 0x00007efc1c9721c8 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 #92 0x00007efc1c9724c2 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 --Type <RET> for more, q to quit, c to continue without paging--
 #93 0x00007efc1c5fd8e7 in gtk_main () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
 #94 0x00007efc1d1d2ba4 in Gtkmm2ext::UI::run(Receiver&) (this=0x55f9a6cfd6f0, old_receiver=...) at ../libs/gtkmm2ext/gtk_ui.cc:290
 #95 0x000055f9a40bea1e in main(int, char**) (argc=1, argv=0x7fff7b651388) at ../gtk2_ardour/main.cc:430
 (gdb)