Thread 28 (Thread 0x7fffc7fff700 (LWP 4380)):
#0  0x00007fffecaa79bd in nanosleep () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fffecad8fe4 in usleep (useconds=<optimized out>)
    at ../sysdeps/unix/sysv/linux/usleep.c:32
#2  0x00007ffff72c1d75 in ARDOUR::AutomationWatch::thread (this=0xfcc2260)
    at ../libs/ardour/automation_watch.cc:137
#3  0x00007ffff72c5477 in boost::_mfi::mf0<void, ARDOUR::AutomationWatch>::operator() (this=0xfcc2520, p=0xfcc2260)
    at /home/harrison/a3/inst/include/boost/bind/mem_fn_template.hpp:49
#4  0x00007ffff72c50ba in boost::_bi::list1<boost::_bi::value<ARDOUR::AutomationWatch*> >::operator()<boost::_mfi::mf0<void, ARDOUR::AutomationWatch>, boost::_bi::list0> (this=0xfcc2530, f=..., a=...)
    at /home/harrison/a3/inst/include/boost/bind/bind.hpp:253
#5  0x00007ffff72c4cb5 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AutomationWatch>, boost::_bi::list1<boost::_bi::value<ARDOUR::AutomationWatch*> > >::operator() (this=0xfcc2520)
    at /home/harrison/a3/inst/include/boost/bind/bind_template.hpp:20
#6  0x00007ffff72c4c40 in sigc::adaptor_functor<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AutomationWatch>, boost::_bi::list1<boost::_bi::value<ARDOUR::AutomationWatch*> > > >::operator() (this=0xfcc2520)
    at /home/harrison/a3/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
---Type <return> to continue, or q <return> to quit---
#7  0x00007ffff72c4840 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 (rep=0xfcc24f0)
    at /home/harrison/a3/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#8  0x00007ffff4143542 in ?? ()
   from /opt/Ardour-3.5.403-dbg/lib/libglibmm-2.4.so.1
#9  0x00007ffff39d39e3 in ?? ()
   from /opt/Ardour-3.5.403-dbg/lib/libglib-2.0.so.0
#10 0x00007fffef0c2182 in start_thread (arg=0x7fffc7fff700)
    at pthread_create.c:312
#11 0x00007fffecae0fbd in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 27 (Thread 0x7fffc77fe700 (LWP 4379)):
#0  0x00007fffecad3c6d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007ffff39b796f in g_poll ()
   from /opt/Ardour-3.5.403-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff39a69f1 in ?? ()
   from /opt/Ardour-3.5.403-dbg/lib/libglib-2.0.so.0
#3  0x00007ffff39a636f in ?? ()
   from /opt/Ardour-3.5.403-dbg/lib/libglib-2.0.so.0
#4  0x00007ffff39a67d2 in g_main_loop_run ()
   from /opt/Ardour-3.5.403-dbg/lib/libglib-2.0.so.0
---Type <return> to continue, or q <return> to quit---
#5  0x00007ffff5d086af in BaseUI::main_thread (this=0x5194690)
    at ../libs/pbd/base_ui.cc:80
#6  0x00007ffff5d0bfbf in sigc::bound_mem_functor0<void, BaseUI>::operator() (
    this=0x5194d08)
    at /home/harrison/a3/inst/include/sigc++-2.0/sigc++/functors/mem_fun.h:1787
#7  0x00007ffff5d0bcec in sigc::adaptor_functor<sigc::bound_mem_functor0<void, BaseUI> >::operator() (this=0x5194d00)
    at /home/harrison/a3/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
#8  0x00007ffff5d0b6a3 in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, BaseUI>, void>::call_it (rep=0x5194cd0)
    at /home/harrison/a3/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#9  0x00007ffff4143542 in ?? ()
   from /opt/Ardour-3.5.403-dbg/lib/libglibmm-2.4.so.1
#10 0x00007ffff39d39e3 in ?? ()
   from /opt/Ardour-3.5.403-dbg/lib/libglib-2.0.so.0
#11 0x00007fffef0c2182 in start_thread (arg=0x7fffc77fe700)
    at pthread_create.c:312
#12 0x00007fffecae0fbd in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 26 (Thread 0x7fff95b9b800 (LWP 4378)):
#0  0x00007ffff39708d6 in g_ptr_array_remove ()
---Type <return> to continue, or q <return> to quit---
   from /opt/Ardour-3.5.403-dbg/lib/libglib-2.0.so.0
#1  0x00007ffff5a7f990 in smf_event_remove_from_track (event=0x7fff7c195d50)
    at ../libs/evoral/src/libsmf/smf.c:598
#2  0x00007ffff5a7f1b7 in smf_event_delete (event=0x7fff7c195d50)
    at ../libs/evoral/src/libsmf/smf.c:363
#3  0x00007ffff5a7eb05 in smf_track_delete (track=0x7fff7c1e57e0)
    at ../libs/evoral/src/libsmf/smf.c:134
#4  0x00007ffff665a56c in Evoral::SMF::begin_write (this=0x5254b40)
    at ../libs/evoral/src/SMF.cpp:364
#5  0x00007ffff7698697 in ARDOUR::SMFSource::mark_streaming_midi_write_started
    (this=0x52548c0, mode=ARDOUR::Sustained)
    at ../libs/ardour/smf_source.cc:509
#6  0x00007ffff743635c in ARDOUR::MidiModel::sync_to_source (this=0x5255950)
    at ../libs/ardour/midi_model.cc:1467
#7  0x00007ffff7699711 in ARDOUR::SMFSource::ensure_disk_file (this=0x52548c0)
    at ../libs/ardour/smf_source.cc:743
#8  0x00007ffff76995f9 in ARDOUR::SMFSource::flush_midi (this=0x52548c0)
    at ../libs/ardour/smf_source.cc:715
#9  0x00007ffff7464bf3 in ARDOUR::MidiSource::session_saved (this=0x52548c0)
    at ../libs/ardour/midi_source.cc:401
#10 0x00007ffff764fb19 in ARDOUR::Session::save_state (this=0x266a040, 
    snapshot_name=..., pending=false, switch_to_snapshot=false)
    at ../libs/ardour/session_state.cc:688
---Type <return> to continue, or q <return> to quit---
#11 0x00007ffff75c72b3 in ARDOUR::Session::remove_source (this=0x266a040, 
    src=...) at ../libs/ardour/session.cc:3290
#12 0x00007ffff75f70bf in boost::_mfi::mf1<void, ARDOUR::Session, boost::weak_ptr<ARDOUR::Source> >::operator()(ARDOUR::Session*, boost::weak_ptr<ARDOUR::Source>) const () from /opt/Ardour-3.5.403-dbg/lib/libardour.so.3
#13 0x00007ffff75f4a09 in void boost::_bi::list2<boost::_bi::value<ARDOUR::Session*>, boost::_bi::value<boost::weak_ptr<ARDOUR::Source> > >::operator()<boost::_mfi::mf1<void, ARDOUR::Session, boost::weak_ptr<ARDOUR::Source> >, boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf1<void, ARDOUR::Session, boost::weak_ptr<ARDOUR::Source> >&, boost::_bi::list0&, int) ()
   from /opt/Ardour-3.5.403-dbg/lib/libardour.so.3
#14 0x00007ffff75f0cb5 in boost::_bi::bind_t<void, boost::_mfi::mf1<void, ARDOUR::Session, boost::weak_ptr<ARDOUR::Source> >, boost::_bi::list2<boost::_bi::value<ARDOUR::Session*>, boost::_bi::value<boost::weak_ptr<ARDOUR::Source> > > >::operator()() () from /opt/Ardour-3.5.403-dbg/lib/libardour.so.3
#15 0x00007ffff75eb261 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf1<void, ARDOUR::Session, boost::weak_ptr<ARDOUR::Source> >, boost::_bi::list2<boost::_bi::value<ARDOUR::Session*>, boost::_bi::value<boost::weak_ptr<ARDOUR::Source> > > >, void>::invoke(boost::detail::function::function_buffer&) () from /opt/Ardour-3.5.403-dbg/lib/libardour.so.3
#16 0x0000000000cdde13 in boost::function0<void>::operator() (
    this=0x7fff7c203dc0)
    at /home/harrison/a3/inst/include/boost/function/function_template.hpp:760
---Type <return> to continue, or q <return> to quit---
#17 0x0000000000d07f25 in PBD::Signal0<void, PBD::OptionalLastValue<void> >::operator() (this=0x114334d8)
    at /home/harrison/ardour/3.0/build/libs/pbd/pbd/signals_generated.h:307
#18 0x0000000000d91e9c in PBD::Destructible::drop_references (this=0x11433490)
    at /home/harrison/ardour/3.0/libs/pbd/pbd/destructible.h:35
#19 0x00007ffff722af8e in ARDOUR::AudioDiskstream::reset_write_sources (
    this=0x1142b680, mark_write_complete=false)
    at ../libs/ardour/audio_diskstream.cc:1957
#20 0x00007ffff722275c in ARDOUR::AudioDiskstream::non_realtime_input_change (
    this=0x1142b680) at ../libs/ardour/audio_diskstream.cc:186
#21 0x00007ffff76d0bc6 in ARDOUR::Track::non_realtime_input_change (
    this=0x10630c90) at ../libs/ardour/track.cc:651
#22 0x00007ffff768d031 in ARDOUR::Session::butler_transport_work (
    this=0x266a040) at ../libs/ardour/session_transport.cc:328
#23 0x00007ffff72d6262 in ARDOUR::Butler::thread_work (this=0x2670110)
    at ../libs/ardour/butler.cc:212
#24 0x00007ffff72d5e65 in ARDOUR::Butler::_thread_work (arg=0x2670110)
    at ../libs/ardour/butler.cc:134
#25 0x00007ffff5d33106 in fake_thread_start (arg=0x51944e0)
    at ../libs/pbd/pthread_utils.cc:85
#26 0x00007fffef0c2182 in start_thread (arg=0x7fff95b9b800)
    at pthread_create.c:312
#27 0x00007fffecae0fbd in clone ()
---Type <return> to continue, or q <return> to quit---
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 25 (Thread 0x7fff95c1d700 (LWP 4377)):
#0  sem_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_wait.S:85
#1  0x00007ffff73b266c in PBD::ProcessSemaphore::wait (this=0x3fdf500)
    at /home/harrison/ardour/3.0/libs/pbd/pbd/semutils.h:41
#2  0x00007ffff73b0ade in ARDOUR::Graph::run_one (this=0x3fdf450)
    at ../libs/ardour/graph.cc:371
#3  0x00007ffff73b0e06 in ARDOUR::Graph::helper_thread (this=0x3fdf450)
    at ../libs/ardour/graph.cc:402
#4  0x00007ffff73b5a11 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (
    this=0x7fff95c1ccd8, p=0x3fdf450)
    at /home/harrison/a3/inst/include/boost/bind/mem_fn_template.hpp:49
#5  0x00007ffff73b565e in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (
    this=0x7fff95c1cce8, f=..., a=...)
    at /home/harrison/a3/inst/include/boost/bind/bind.hpp:253
#6  0x00007ffff73b53a3 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (
    this=0x7fff95c1ccd8)
    at /home/harrison/a3/inst/include/boost/bind/bind_template.hpp:20
#7  0x00007ffff73b4fc1 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<---Type <return> to continue, or q <return> to quit---
boost::_bi::value<ARDOUR::Graph*> > >, void>::invoke (function_obj_ptr=...)
    at /home/harrison/a3/inst/include/boost/function/function_template.hpp:153
#8  0x0000000000cdde13 in boost::function0<void>::operator() (
    this=0x7fff95c1ccd0)
    at /home/harrison/a3/inst/include/boost/function/function_template.hpp:760
#9  0x00007fffe62ca0a9 in ARDOUR::JACKAudioBackend::_start_process_thread (
    arg=0x3fb14a0) at ../libs/backends/jack/jack_audiobackend.cc:913
#10 0x00007fffef0c2182 in start_thread (arg=0x7fff95c1d700)
    at pthread_create.c:312
#11 0x00007fffecae0fbd in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 24 (Thread 0x7fffb40ef700 (LWP 4376)):
#0  sem_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_wait.S:85
#1  0x00007ffff73b266c in PBD::ProcessSemaphore::wait (this=0x3fdf500)
    at /home/harrison/ardour/3.0/libs/pbd/pbd/semutils.h:41
#2  0x00007ffff73b0ade in ARDOUR::Graph::run_one (this=0x3fdf450)
    at ../libs/ardour/graph.cc:371
#3  0x00007ffff73b0e06 in ARDOUR::Graph::helper_thread (this=0x3fdf450)
    at ../libs/ardour/graph.cc:402
#4  0x00007ffff73b5a11 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (
    this=0x7fffb40eecd8, p=0x3fdf450)
    at /home/harrison/a3/inst/include/boost/bind/mem_fn_template.hpp:49
---Type <return> to continue, or q <return> to quit---
#5  0x00007ffff73b565e in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (
    this=0x7fffb40eece8, f=..., a=...)
    at /home/harrison/a3/inst/include/boost/bind/bind.hpp:253
#6  0x00007ffff73b53a3 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (
    this=0x7fffb40eecd8)
    at /home/harrison/a3/inst/include/boost/bind/bind_template.hpp:20
#7  0x00007ffff73b4fc1 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 (function_obj_ptr=...)
    at /home/harrison/a3/inst/include/boost/function/function_template.hpp:153
#8  0x0000000000cdde13 in boost::function0<void>::operator() (
    this=0x7fffb40eecd0)
    at /home/harrison/a3/inst/include/boost/function/function_template.hpp:760
#9  0x00007fffe62ca0a9 in ARDOUR::JACKAudioBackend::_start_process_thread (
    arg=0x3fb14a0) at ../libs/backends/jack/jack_audiobackend.cc:913
#10 0x00007fffef0c2182 in start_thread (arg=0x7fffb40ef700)
    at pthread_create.c:312
#11 0x00007fffecae0fbd in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 23 (Thread 0x7fffb4170700 (LWP 4375)):
---Type <return> to continue, or q <return> to quit---
#0  sem_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_wait.S:85
#1  0x00007ffff73b266c in PBD::ProcessSemaphore::wait (this=0x3fdf500)
    at /home/harrison/ardour/3.0/libs/pbd/pbd/semutils.h:41
#2  0x00007ffff73b0ade in ARDOUR::Graph::run_one (this=0x3fdf450)
    at ../libs/ardour/graph.cc:371
#3  0x00007ffff73b0e06 in ARDOUR::Graph::helper_thread (this=0x3fdf450)
    at ../libs/ardour/graph.cc:402
#4  0x00007ffff73b5a11 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (
    this=0x7fffb416fcd8, p=0x3fdf450)
    at /home/harrison/a3/inst/include/boost/bind/mem_fn_template.hpp:49
#5  0x00007ffff73b565e in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (
    this=0x7fffb416fce8, f=..., a=...)
    at /home/harrison/a3/inst/include/boost/bind/bind.hpp:253
#6  0x00007ffff73b53a3 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (
    this=0x7fffb416fcd8)
    at /home/harrison/a3/inst/include/boost/bind/bind_template.hpp:20
#7  0x00007ffff73b4fc1 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 (function_obj_ptr=...)
    at /home/harrison/a3/inst/include/boost/function/function_template.hpp:153
#8  0x0000000000cdde13 in boost::function0<void>::operator() (
---Type <return> to continue, or q <return> to quit---
    this=0x7fffb416fcd0)
    at /home/harrison/a3/inst/include/boost/function/function_template.hpp:760
#9  0x00007fffe62ca0a9 in ARDOUR::JACKAudioBackend::_start_process_thread (
    arg=0x3fb14a0) at ../libs/backends/jack/jack_audiobackend.cc:913
#10 0x00007fffef0c2182 in start_thread (arg=0x7fffb4170700)
    at pthread_create.c:312
#11 0x00007fffecae0fbd in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 22 (Thread 0x7fffc40bd700 (LWP 4374)):
#0  sem_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_wait.S:85
#1  0x00007ffff73b266c in PBD::ProcessSemaphore::wait (this=0x3fdf520)
    at /home/harrison/ardour/3.0/libs/pbd/pbd/semutils.h:41
#2  0x00007ffff73aff43 in ARDOUR::Graph::restart_cycle (this=0x3fdf450)
    at ../libs/ardour/graph.cc:245
#3  0x00007ffff73aff0d in ARDOUR::Graph::dec_ref (this=0x3fdf450)
    at ../libs/ardour/graph.cc:232
#4  0x00007ffff73b6590 in ARDOUR::GraphNode::finish (this=0x53179a8, chain=0)
    at ../libs/ardour/graphnode.cc:71
#5  0x00007ffff73b0c9e in ARDOUR::Graph::run_one (this=0x3fdf450)
    at ../libs/ardour/graph.cc:385
#6  0x00007ffff73b0e06 in ARDOUR::Graph::helper_thread (this=0x3fdf450)
    at ../libs/ardour/graph.cc:402
---Type <return> to continue, or q <return> to quit---
#7  0x00007ffff73b5a11 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (
    this=0x7fffc40bccd8, p=0x3fdf450)
    at /home/harrison/a3/inst/include/boost/bind/mem_fn_template.hpp:49
#8  0x00007ffff73b565e in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (
    this=0x7fffc40bcce8, f=..., a=...)
    at /home/harrison/a3/inst/include/boost/bind/bind.hpp:253
#9  0x00007ffff73b53a3 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (
    this=0x7fffc40bccd8)
    at /home/harrison/a3/inst/include/boost/bind/bind_template.hpp:20
#10 0x00007ffff73b4fc1 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 (function_obj_ptr=...)
    at /home/harrison/a3/inst/include/boost/function/function_template.hpp:153
#11 0x0000000000cdde13 in boost::function0<void>::operator() (
    this=0x7fffc40bccd0)
    at /home/harrison/a3/inst/include/boost/function/function_template.hpp:760
#12 0x00007fffe62ca0a9 in ARDOUR::JACKAudioBackend::_start_process_thread (
    arg=0x27aaac0) at ../libs/backends/jack/jack_audiobackend.cc:913
#13 0x00007fffef0c2182 in start_thread (arg=0x7fffc40bd700)
    at pthread_create.c:312
#14 0x00007fffecae0fbd in clone ()
---Type <return> to continue, or q <return> to quit---
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 21 (Thread 0x7fffc413e700 (LWP 4373)):
#0  sem_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_wait.S:85
#1  0x00007ffff73b266c in PBD::ProcessSemaphore::wait (this=0x3fdf500)
    at /home/harrison/ardour/3.0/libs/pbd/pbd/semutils.h:41
#2  0x00007ffff73b0ade in ARDOUR::Graph::run_one (this=0x3fdf450)
    at ../libs/ardour/graph.cc:371
#3  0x00007ffff73b0e06 in ARDOUR::Graph::helper_thread (this=0x3fdf450)
    at ../libs/ardour/graph.cc:402
#4  0x00007ffff73b5a11 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (
    this=0x7fffc413dcd8, p=0x3fdf450)
    at /home/harrison/a3/inst/include/boost/bind/mem_fn_template.hpp:49
#5  0x00007ffff73b565e in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (
    this=0x7fffc413dce8, f=..., a=...)
    at /home/harrison/a3/inst/include/boost/bind/bind.hpp:253
#6  0x00007ffff73b53a3 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (
    this=0x7fffc413dcd8)
    at /home/harrison/a3/inst/include/boost/bind/bind_template.hpp:20
#7  0x00007ffff73b4fc1 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<---Type <return> to continue, or q <return> to quit---
boost::_bi::value<ARDOUR::Graph*> > >, void>::invoke (function_obj_ptr=...)
    at /home/harrison/a3/inst/include/boost/function/function_template.hpp:153
#8  0x0000000000cdde13 in boost::function0<void>::operator() (
    this=0x7fffc413dcd0)
    at /home/harrison/a3/inst/include/boost/function/function_template.hpp:760
#9  0x00007fffe62ca0a9 in ARDOUR::JACKAudioBackend::_start_process_thread (
    arg=0x27aaac0) at ../libs/backends/jack/jack_audiobackend.cc:913
#10 0x00007fffef0c2182 in start_thread (arg=0x7fffc413e700)
    at pthread_create.c:312
#11 0x00007fffecae0fbd in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 20 (Thread 0x7fffc41bf700 (LWP 4372)):
#0  sem_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_wait.S:85
#1  0x00007ffff73b266c in PBD::ProcessSemaphore::wait (this=0x3fdf500)
    at /home/harrison/ardour/3.0/libs/pbd/pbd/semutils.h:41
#2  0x00007ffff73b0ade in ARDOUR::Graph::run_one (this=0x3fdf450)
    at ../libs/ardour/graph.cc:371
#3  0x00007ffff73b0e06 in ARDOUR::Graph::helper_thread (this=0x3fdf450)
    at ../libs/ardour/graph.cc:402
#4  0x00007ffff73b5a11 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (
    this=0x7fffc41becd8, p=0x3fdf450)
    at /home/harrison/a3/inst/include/boost/bind/mem_fn_template.hpp:49
---Type <return> to continue, or q <return> to quit---
#5  0x00007ffff73b565e in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (
    this=0x7fffc41bece8, f=..., a=...)
    at /home/harrison/a3/inst/include/boost/bind/bind.hpp:253
#6  0x00007ffff73b53a3 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (
    this=0x7fffc41becd8)
    at /home/harrison/a3/inst/include/boost/bind/bind_template.hpp:20
#7  0x00007ffff73b4fc1 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 (function_obj_ptr=...)
    at /home/harrison/a3/inst/include/boost/function/function_template.hpp:153
#8  0x0000000000cdde13 in boost::function0<void>::operator() (
    this=0x7fffc41becd0)
    at /home/harrison/a3/inst/include/boost/function/function_template.hpp:760
#9  0x00007fffe62ca0a9 in ARDOUR::JACKAudioBackend::_start_process_thread (
    arg=0x27aaac0) at ../libs/backends/jack/jack_audiobackend.cc:913
#10 0x00007fffef0c2182 in start_thread (arg=0x7fffc41bf700)
    at pthread_create.c:312
#11 0x00007fffecae0fbd in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 19 (Thread 0x7fffcc09f700 (LWP 4371)):
---Type <return> to continue, or q <return> to quit---
#0  sem_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_wait.S:85
#1  0x00007ffff73b266c in PBD::ProcessSemaphore::wait (this=0x3fdf500)
    at /home/harrison/ardour/3.0/libs/pbd/pbd/semutils.h:41
#2  0x00007ffff73b0ade in ARDOUR::Graph::run_one (this=0x3fdf450)
    at ../libs/ardour/graph.cc:371
#3  0x00007ffff73b10fe in ARDOUR::Graph::main_thread (this=0x3fdf450)
    at ../libs/ardour/graph.cc:440
#4  0x00007ffff73b5a11 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (
    this=0x7fffcc09ecd8, p=0x3fdf450)
    at /home/harrison/a3/inst/include/boost/bind/mem_fn_template.hpp:49
#5  0x00007ffff73b565e in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (
    this=0x7fffcc09ece8, f=..., a=...)
    at /home/harrison/a3/inst/include/boost/bind/bind.hpp:253
#6  0x00007ffff73b53a3 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (
    this=0x7fffcc09ecd8)
    at /home/harrison/a3/inst/include/boost/bind/bind_template.hpp:20
#7  0x00007ffff73b4fc1 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 (function_obj_ptr=...)
    at /home/harrison/a3/inst/include/boost/function/function_template.hpp:153
#8  0x0000000000cdde13 in boost::function0<void>::operator() (
---Type <return> to continue, or q <return> to quit---
    this=0x7fffcc09ecd0)
    at /home/harrison/a3/inst/include/boost/function/function_template.hpp:760
#9  0x00007fffe62ca0a9 in ARDOUR::JACKAudioBackend::_start_process_thread (
    arg=0x27aaac0) at ../libs/backends/jack/jack_audiobackend.cc:913
#10 0x00007fffef0c2182 in start_thread (arg=0x7fffcc09f700)
    at pthread_create.c:312
#11 0x00007fffecae0fbd in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 18 (Thread 0x7fffcceb5700 (LWP 4370)):
#0  0x00007fffef0c9b9d in nanosleep () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007ffff39d50b8 in g_usleep ()
   from /opt/Ardour-3.5.403-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff726dce8 in ARDOUR::AudioEngine::meter_thread (this=0x21a9ea0)
    at ../libs/ardour/audioengine.cc:382
#3  0x00007ffff7279e57 in boost::_mfi::mf0<void, ARDOUR::AudioEngine>::operator() (this=0x27aaaa0, p=0x21a9ea0)
    at /home/harrison/a3/inst/include/boost/bind/mem_fn_template.hpp:49
#4  0x00007ffff7279a26 in boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> >::operator()<boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list0> (this=0x27aaab0, f=..., a=...)
    at /home/harrison/a3/inst/include/boost/bind/bind.hpp:253
#5  0x00007ffff72792ff in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR---Type <return> to continue, or q <return> to quit---
::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >::operator() (this=0x27aaaa0)
    at /home/harrison/a3/inst/include/boost/bind/bind_template.hpp:20
#6  0x00007ffff7278ad8 in sigc::adaptor_functor<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > > >::operator() (this=0x27aaaa0)
    at /home/harrison/a3/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
#7  0x00007ffff7277c12 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 (rep=0x27aaa70)
    at /home/harrison/a3/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#8  0x00007ffff4143542 in ?? ()
   from /opt/Ardour-3.5.403-dbg/lib/libglibmm-2.4.so.1
#9  0x00007ffff39d39e3 in ?? ()
   from /opt/Ardour-3.5.403-dbg/lib/libglib-2.0.so.0
#10 0x00007fffef0c2182 in start_thread (arg=0x7fffcceb5700)
    at pthread_create.c:312
#11 0x00007fffecae0fbd in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 17 (Thread 0x7fffe4c39700 (LWP 4369)):
#0  sem_timedwait ()
---Type <return> to continue, or q <return> to quit---
    at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S:101
#1  0x00007fffe603d37c in ?? () from /usr/lib/x86_64-linux-gnu/libjack.so.0
#2  0x00007fffe6021a7c in ?? () from /usr/lib/x86_64-linux-gnu/libjack.so.0
#3  0x00007fffe60203c7 in ?? () from /usr/lib/x86_64-linux-gnu/libjack.so.0
#4  0x00007fffe62ca14e in ARDOUR::JACKAudioBackend::process_thread (
    this=0x2404d40) at ../libs/backends/jack/jack_audiobackend.cc:935
#5  0x00007fffe62ca0fe in ARDOUR::JACKAudioBackend::_process_thread (
    arg=0x2404d40) at ../libs/backends/jack/jack_audiobackend.cc:921
#6  0x00007fffe602033a in ?? () from /usr/lib/x86_64-linux-gnu/libjack.so.0
#7  0x00007fffe603c5a0 in ?? () from /usr/lib/x86_64-linux-gnu/libjack.so.0
#8  0x00007fffef0c2182 in start_thread (arg=0x7fffe4c39700)
    at pthread_create.c:312
#9  0x00007fffecae0fbd in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 16 (Thread 0x7fffe4e61700 (LWP 4368)):
#0  0x00007fffef0c93bd in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fffe603e1b4 in ?? () from /usr/lib/x86_64-linux-gnu/libjack.so.0
#2  0x00007fffe6040cac in ?? () from /usr/lib/x86_64-linux-gnu/libjack.so.0
#3  0x00007fffe603c5a0 in ?? () from /usr/lib/x86_64-linux-gnu/libjack.so.0
#4  0x00007fffef0c2182 in start_thread (arg=0x7fffe4e61700)
    at pthread_create.c:312
#5  0x00007fffecae0fbd in clone ()
---Type <return> to continue, or q <return> to quit---
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 15 (Thread 0x7fffe4ee2700 (LWP 4367)):
#0  pthread_cond_wait@@GLIBC_2.3.2 ()
    at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fffe603d9ac in ?? () from /usr/lib/x86_64-linux-gnu/libjack.so.0
#2  0x00007fffe60346e8 in ?? () from /usr/lib/x86_64-linux-gnu/libjack.so.0
#3  0x00007fffe603c5a0 in ?? () from /usr/lib/x86_64-linux-gnu/libjack.so.0
#4  0x00007fffef0c2182 in start_thread (arg=0x7fffe4ee2700)
    at pthread_create.c:312
#5  0x00007fffecae0fbd in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 9 (Thread 0x7fffcfde5700 (LWP 4361)):
#0  0x00007fffecad3c6d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007ffff39b796f in g_poll ()
   from /opt/Ardour-3.5.403-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff39a69f1 in ?? ()
   from /opt/Ardour-3.5.403-dbg/lib/libglib-2.0.so.0
#3  0x00007ffff39a636f in ?? ()
   from /opt/Ardour-3.5.403-dbg/lib/libglib-2.0.so.0
#4  0x00007ffff39a6468 in g_main_context_iteration ()
   from /opt/Ardour-3.5.403-dbg/lib/libglib-2.0.so.0
---Type <return> to continue, or q <return> to quit---
#5  0x00007ffff39a7f6f in ?? ()
   from /opt/Ardour-3.5.403-dbg/lib/libglib-2.0.so.0
#6  0x00007ffff39d39e3 in ?? ()
   from /opt/Ardour-3.5.403-dbg/lib/libglib-2.0.so.0
#7  0x00007fffef0c2182 in start_thread (arg=0x7fffcfde5700)
    at pthread_create.c:312
#8  0x00007fffecae0fbd in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 5 (Thread 0x7fffe75a0700 (LWP 4357)):
#0  pthread_cond_wait@@GLIBC_2.3.2 ()
    at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ffff39f839d in g_cond_wait ()
   from /opt/Ardour-3.5.403-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff721c09b in ARDOUR::Analyser::work ()
    at ../libs/ardour/analyser.cc:81
#3  0x00007ffff721be31 in analyser_work () at ../libs/ardour/analyser.cc:46
#4  0x0000000001331a2f in sigc::pointer_functor0<void>::operator()() const ()
#5  0x000000000132ef42 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator()() const ()
#6  0x000000000132b5e5 in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x1ee6880)
    at /home/harrison/a3/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
---Type <return> to continue, or q <return> to quit---
#7  0x00007ffff4143542 in ?? ()
   from /opt/Ardour-3.5.403-dbg/lib/libglibmm-2.4.so.1
#8  0x00007ffff39d39e3 in ?? ()
   from /opt/Ardour-3.5.403-dbg/lib/libglib-2.0.so.0
#9  0x00007fffef0c2182 in start_thread (arg=0x7fffe75a0700)
    at pthread_create.c:312
#10 0x00007fffecae0fbd in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 4 (Thread 0x7fffe7da1700 (LWP 4356)):
#0  pthread_cond_wait@@GLIBC_2.3.2 ()
    at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ffff39f839d in g_cond_wait ()
   from /opt/Ardour-3.5.403-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff76a7291 in peak_thread_work ()
    at ../libs/ardour/source_factory.cc:68
#3  0x0000000001331a2f in sigc::pointer_functor0<void>::operator()() const ()
#4  0x000000000132ef42 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator()() const ()
#5  0x000000000132b5e5 in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x1efc730)
    at /home/harrison/a3/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#6  0x00007ffff4143542 in ?? ()
---Type <return> to continue, or q <return> to quit---
   from /opt/Ardour-3.5.403-dbg/lib/libglibmm-2.4.so.1
#7  0x00007ffff39d39e3 in ?? ()
   from /opt/Ardour-3.5.403-dbg/lib/libglib-2.0.so.0
#8  0x00007fffef0c2182 in start_thread (arg=0x7fffe7da1700)
    at pthread_create.c:312
#9  0x00007fffecae0fbd in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 3 (Thread 0x7fffe85a2700 (LWP 4355)):
#0  pthread_cond_wait@@GLIBC_2.3.2 ()
    at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ffff39f839d in g_cond_wait ()
   from /opt/Ardour-3.5.403-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff76a7291 in peak_thread_work ()
    at ../libs/ardour/source_factory.cc:68
#3  0x0000000001331a2f in sigc::pointer_functor0<void>::operator()() const ()
#4  0x000000000132ef42 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator()() const ()
#5  0x000000000132b5e5 in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x1ee67d0)
    at /home/harrison/a3/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#6  0x00007ffff4143542 in ?? ()
   from /opt/Ardour-3.5.403-dbg/lib/libglibmm-2.4.so.1
---Type <return> to continue, or q <return> to quit---
#7  0x00007ffff39d39e3 in ?? ()
   from /opt/Ardour-3.5.403-dbg/lib/libglib-2.0.so.0
#8  0x00007fffef0c2182 in start_thread (arg=0x7fffe85a2700)
    at pthread_create.c:312
#9  0x00007fffecae0fbd in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7fffe8da3700 (LWP 4354)):
#0  0x00007fffecaa79bd in nanosleep () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fffecad8fe4 in usleep (useconds=<optimized out>)
    at ../sysdeps/unix/sysv/linux/usleep.c:32
#2  0x000000000165d8e6 in gui_event_loop (ptr=0x0)
    at ../gtk2_ardour/linux_vst_gui_support.cc:380
#3  0x00007fffef0c2182 in start_thread (arg=0x7fffe8da3700)
    at pthread_create.c:312
#4  0x00007fffecae0fbd in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7ffff7fa8940 (LWP 4350)):
#0  0x00007fffeca1cbb9 in __GI_raise (sig=sig@entry=6)
    at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
#1  0x00007fffeca1ffc8 in __GI_abort () at abort.c:89
#2  0x00007fffeca15a76 in __assert_fail_base (
---Type <return> to continue, or q <return> to quit---
    fmt=0x7fffe8db905f "%s%s%s :%u : %s%s l'assertion « %s » a échoué.\n%n", assertion=assertion@entry=0x7ffff5a87be0 "buffer_length > 0", 
    file=file@entry=0x7ffff5a87610 "../libs/evoral/src/libsmf/smf_load.c", 
    line=line@entry=560, 
    function=function@entry=0x7ffff5a87fe0 <__PRETTY_FUNCTION__.10578> "parse_next_event") at assert.c:92
#3  0x00007fffeca15b22 in __GI___assert_fail (
    assertion=0x7ffff5a87be0 "buffer_length > 0", 
    file=0x7ffff5a87610 "../libs/evoral/src/libsmf/smf_load.c", line=560, 
    function=0x7ffff5a87fe0 <__PRETTY_FUNCTION__.10578> "parse_next_event")
    at assert.c:101
#4  0x00007ffff5a832c2 in parse_next_event (track=0x1144ed60)
    at ../libs/evoral/src/libsmf/smf_load.c:560
#5  0x00007ffff5a83953 in parse_mtrk_chunk (track=0x1144ed60)
    at ../libs/evoral/src/libsmf/smf_load.c:780
#6  0x00007ffff5a83c8b in smf_load_from_memory (buffer=0x1144fd00, 
    buffer_length=4877) at ../libs/evoral/src/libsmf/smf_load.c:876
#7  0x00007ffff5a83da9 in smf_load (file=0x11453ff0)
    at ../libs/evoral/src/libsmf/smf_load.c:917
#8  0x00007ffff5a850cc in assert_smf_saved_correctly (smf=0x5255360, 
    file=0x11453ff0) at ../libs/evoral/src/libsmf/smf_save.c:585
#9  0x00007ffff5a85250 in smf_save (smf=0x5255360, file=0x11453ff0)
    at ../libs/evoral/src/libsmf/smf_save.c:637
---Type <return> to continue, or q <return> to quit---
#10 0x00007ffff665a74b in Evoral::SMF::end_write (this=0x5254b40)
    at ../libs/evoral/src/SMF.cpp:382
#11 0x00007ffff769960b in ARDOUR::SMFSource::flush_midi (this=0x52548c0)
    at ../libs/ardour/smf_source.cc:717
#12 0x00007ffff7464bf3 in ARDOUR::MidiSource::session_saved (this=0x52548c0)
    at ../libs/ardour/midi_source.cc:401
#13 0x00007ffff764fb19 in ARDOUR::Session::save_state (this=0x266a040, 
    snapshot_name=..., pending=false, switch_to_snapshot=false)
    at ../libs/ardour/session_state.cc:688
#14 0x00007ffff75bfc42 in ARDOUR::Session::add_routes (this=0x266a040, 
    new_routes=..., input_auto_connect=true, output_auto_connect=true, 
    save=true) at ../libs/ardour/session.cc:2345
#15 0x00007ffff75be2b8 in ARDOUR::Session::new_audio_track (this=0x266a040, 
    input_channels=1, output_channels=2, mode=ARDOUR::Normal, route_group=0x0, 
    how_many=0, name_template=...) at ../libs/ardour/session.cc:2118
#16 0x0000000000cf951e in ARDOUR_UI::session_add_audio_route (this=0x21acaf0, 
    track=true, input_channels=1, output_channels=2, mode=ARDOUR::Normal, 
    route_group=0x0, how_many=2, name_template=...)
    at ../gtk2_ardour/ardour_ui.cc:1684
#17 0x0000000000d09a1b in ARDOUR_UI::session_add_audio_track (this=0x21acaf0, 
    input_channels=1, output_channels=2, mode=ARDOUR::Normal, route_group=0x0, 
    how_many=2, name_template=...) at ../gtk2_ardour/ardour_ui.h:249
#18 0x0000000000d022b0 in ARDOUR_UI::add_route (this=0x21acaf0, 
---Type <return> to continue, or q <return> to quit---
    float_window=0x0) at ../gtk2_ardour/ardour_ui.cc:3370
#19 0x0000000000d5f6d4 in sigc::bound_mem_functor1<void, ARDOUR_UI, Gtk::Window*>::operator() (this=0x3d1e3f0, _A_a1=@0x3d1e410: 0x0)
    at /home/harrison/a3/inst/include/sigc++-2.0/sigc++/functors/mem_fun.h:1851
#20 0x0000000000d5ec21 in sigc::adaptor_functor<sigc::bound_mem_functor1<void, ARDOUR_UI, Gtk::Window*> >::operator()<Gtk::Window*&> (this=0x3d1e3e8, 
    _A_arg1=@0x3d1e410: 0x0)
    at /home/harrison/a3/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:84
#21 0x0000000000d5d7c3 in sigc::bind_functor<-1, sigc::bound_mem_functor1<void, ARDOUR_UI, Gtk::Window*>, Gtk::Window*, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil>::operator() (this=0x3d1e3e0)
    at /home/harrison/a3/inst/include/sigc++-2.0/sigc++/adaptors/bind.h:1110
#22 0x0000000000d5c189 in sigc::internal::slot_call0<sigc::bind_functor<-1, sigc::bound_mem_functor1<void, ARDOUR_UI, Gtk::Window*>, Gtk::Window*, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil>, void>::call_it (
    rep=0x3d1e3b0)
    at /home/harrison/a3/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#23 0x00007ffff41505a2 in Glib::SignalProxyNormal::slot0_void_callback(_GObject*, void*) () from /opt/Ardour-3.5.403-dbg/lib/libglibmm-2.4.so.1
#24 0x00007ffff3ebc1e0 in g_cclosure_marshal_VOID__VOID ()
   from /opt/Ardour-3.5.403-dbg/lib/libgobject-2.0.so.0
#25 0x00007ffff3eb93da in g_closure_invoke ()
---Type <return> to continue, or q <return> to quit---
   from /opt/Ardour-3.5.403-dbg/lib/libgobject-2.0.so.0
#26 0x00007ffff3ed6a2d in ?? ()
   from /opt/Ardour-3.5.403-dbg/lib/libgobject-2.0.so.0
#27 0x00007ffff3ed59d5 in g_signal_emit_valist ()
   from /opt/Ardour-3.5.403-dbg/lib/libgobject-2.0.so.0
#28 0x00007ffff3ed5f28 in g_signal_emit ()
   from /opt/Ardour-3.5.403-dbg/lib/libgobject-2.0.so.0
#29 0x00007ffff2f1c728 in _gtk_action_emit_activate ()
   from /opt/Ardour-3.5.403-dbg/lib/libgtk-x11-2.0.so.0
#30 0x00007ffff3ebc27b in g_cclosure_marshal_VOID__VOIDv ()
   from /opt/Ardour-3.5.403-dbg/lib/libgobject-2.0.so.0
#31 0x00007ffff3eb9b59 in ?? ()
   from /opt/Ardour-3.5.403-dbg/lib/libgobject-2.0.so.0
#32 0x00007ffff3eb96d0 in ?? ()
   from /opt/Ardour-3.5.403-dbg/lib/libgobject-2.0.so.0
#33 0x00007ffff3ed4d12 in g_signal_emit_valist ()
   from /opt/Ardour-3.5.403-dbg/lib/libgobject-2.0.so.0
#34 0x00007ffff3ed5f28 in g_signal_emit ()
   from /opt/Ardour-3.5.403-dbg/lib/libgobject-2.0.so.0
#35 0x00007ffff316bf0e in gtk_widget_activate ()
   from /opt/Ardour-3.5.403-dbg/lib/libgtk-x11-2.0.so.0
#36 0x00007ffff302863b in gtk_menu_shell_activate_item ()
   from /opt/Ardour-3.5.403-dbg/lib/libgtk-x11-2.0.so.0
---Type <return> to continue, or q <return> to quit---
#37 0x00007ffff302922a in ?? ()
   from /opt/Ardour-3.5.403-dbg/lib/libgtk-x11-2.0.so.0
#38 0x00007ffff30192be in ?? ()
   from /opt/Ardour-3.5.403-dbg/lib/libgtk-x11-2.0.so.0
#39 0x00007ffff3014718 in _gtk_marshal_BOOLEAN__BOXED ()
   from /opt/Ardour-3.5.403-dbg/lib/libgtk-x11-2.0.so.0
#40 0x00007ffff3eb9ac3 in ?? ()
   from /opt/Ardour-3.5.403-dbg/lib/libgobject-2.0.so.0
#41 0x00007ffff3eb93da in g_closure_invoke ()
   from /opt/Ardour-3.5.403-dbg/lib/libgobject-2.0.so.0
#42 0x00007ffff3ed68d9 in ?? ()
   from /opt/Ardour-3.5.403-dbg/lib/libgobject-2.0.so.0
#43 0x00007ffff3ed5a67 in g_signal_emit_valist ()
   from /opt/Ardour-3.5.403-dbg/lib/libgobject-2.0.so.0
#44 0x00007ffff3ed5f28 in g_signal_emit ()
   from /opt/Ardour-3.5.403-dbg/lib/libgobject-2.0.so.0
#45 0x00007ffff316b4af in ?? ()
   from /opt/Ardour-3.5.403-dbg/lib/libgtk-x11-2.0.so.0
#46 0x00007ffff300c8b3 in gtk_propagate_event ()
   from /opt/Ardour-3.5.403-dbg/lib/libgtk-x11-2.0.so.0
#47 0x00007ffff300e42b in gtk_main_do_event ()
   from /opt/Ardour-3.5.403-dbg/lib/libgtk-x11-2.0.so.0
#48 0x00007ffff2c3f62c in ?? ()
---Type <return> to continue, or q <return> to quit---
   from /opt/Ardour-3.5.403-dbg/lib/libgdk-x11-2.0.so.0
#49 0x00007ffff39a544f in ?? ()
   from /opt/Ardour-3.5.403-dbg/lib/libglib-2.0.so.0
#50 0x00007ffff39a61a5 in g_main_context_dispatch ()
   from /opt/Ardour-3.5.403-dbg/lib/libglib-2.0.so.0
#51 0x00007ffff39a639c in ?? ()
   from /opt/Ardour-3.5.403-dbg/lib/libglib-2.0.so.0
#52 0x00007ffff39a67d2 in g_main_loop_run ()
   from /opt/Ardour-3.5.403-dbg/lib/libglib-2.0.so.0
#53 0x00007ffff300de37 in gtk_main ()
   from /opt/Ardour-3.5.403-dbg/lib/libgtk-x11-2.0.so.0
#54 0x00007ffff60e45b5 in Gtkmm2ext::UI::run (this=0x21acaf0, old_receiver=...)
    at ../libs/gtkmm2ext/gtk_ui.cc:273
#55 0x000000000111a381 in main (argc=1, argv=0x7fffffffd728)
    at ../gtk2_ardour/main.cc:519
(gdb)