Program terminated with signal 6, Aborted.
#0  0x00007ffbefa47355 in raise () from /lib64/libc.so.6
(gdb) thread apply all bt

Thread 13 (Thread 16317):
#0  0x00007ffbefd89c8d in nanosleep () from /lib64/libpthread.so.0
#1  0x00007ffbf5a56258 in g_usleep () from /usr/lib64/libglib-2.0.so.0
#2  0x00007ffbf99c7632 in ARDOUR::AudioEngine::meter_thread (this=0x34ab740) at ../libs/ardour/audioengine.cc:691
#3  0x00007ffbf99e8a8b in boost::_mfi::mf0<void, ARDOUR::AudioEngine>::operator() (this=0x7ffbe02c3140, p=0x34ab740) at /usr/include/boost/bind/mem_fn_template.hpp:49
#4  0x00007ffbf99e3e14 in boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> >::operator()<boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list0> (
    this=0x7ffbe02c3150, f=..., a=...) at /usr/include/boost/bind/bind.hpp:253
#5  0x00007ffbf99df777 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >::operator() (
    this=0x7ffbe02c3140) at /usr/include/boost/bind/bind_template.hpp:20
#6  0x00007ffbf99da6ba 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=0x7ffbe02c3140) at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
#7  0x00007ffbf99d5fe2 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=0x7ffbe02c3110) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:103
#8  0x00007ffbf4bc3422 in ?? () from /usr/lib64/libglibmm-2.4.so.1
#9  0x00007ffbf5a53864 in ?? () from /usr/lib64/libglib-2.0.so.0
#10 0x00007ffbefd81c1a in start_thread () from /lib64/libpthread.so.0
#11 0x00007ffbefae6e7d in clone () from /lib64/libc.so.6

Thread 12 (Thread 16311):
#0  0x00007ffbefd8955d in read () from /lib64/libpthread.so.0
#1  0x00007ffbf5d22440 in read (this=0x3222830, data=0x7ffbe52a5b40, len=65) at /usr/include/bits/unistd.h:45
#2  Jack::JackClientSocket::Read (this=0x3222830, data=0x7ffbe52a5b40, len=65) at ../posix/JackSocket.cpp:183
#3  0x00007ffbf5d25c39 in Read (this=0x3222560) at ../common/JackRequest.h:1450
#4  Jack::JackSocketClientChannel::Execute (this=0x3222560) at ../posix/JackSocketClientChannel.cpp:386
#5  0x00007ffbf5d20c5a in Jack::JackPosixThread::ThreadHandler (arg=<value optimized out>) at ../posix/JackPosixThread.cpp:59
#6  0x00007ffbefd81c1a in start_thread () from /lib64/libpthread.so.0
#7  0x00007ffbefae6e7d in clone () from /lib64/libc.so.6

Thread 11 (Thread 16310):
#0  0x00007ffbefd8656c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007ffbf5d22083 in Jack::JackProcessSync::Wait (this=<value optimized out>) at ../posix/JackProcessSync.cpp:69
#2  0x00007ffbf5d1afc0 in Jack::JackMessageBuffer::Execute (this=0x34f10f0) at ../common/JackMessageBuffer.cpp:84
#3  0x00007ffbf5d20c5a in Jack::JackPosixThread::ThreadHandler (arg=<value optimized out>) at ../posix/JackPosixThread.cpp:59
#4  0x00007ffbefd81c1a in start_thread () from /lib64/libpthread.so.0
#5  0x00007ffbefae6e7d in clone () from /lib64/libc.so.6

Thread 10 (Thread 16309):
#0  0x00007ffbefd8656c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007ffbf994e83b in ARDOUR::Analyser::work () at ../libs/ardour/analyser.cc:85
#2  0x00007ffbf994e569 in analyser_work () at ../libs/ardour/analyser.cc:49
#3  0x0000000001661695 in sigc::pointer_functor0<void>::operator() (this=0x3498ba8) at /usr/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#4  0x000000000165eea2 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x3498ba0) at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
#5  0x000000000165bdbd in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x3498b70) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:103
#6  0x00007ffbf4bc3422 in ?? () from /usr/lib64/libglibmm-2.4.so.1
#7  0x00007ffbf5a53864 in ?? () from /usr/lib64/libglib-2.0.so.0
#8  0x00007ffbefd81c1a in start_thread () from /lib64/libpthread.so.0
#9  0x00007ffbefae6e7d in clone () from /lib64/libc.so.6

Thread 9 (Thread 16308):
#0  0x00007ffbefd8656c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007ffbf9e617eb in peak_thread_work () at ../libs/ardour/source_factory.cc:73
#2  0x0000000001661695 in sigc::pointer_functor0<void>::operator() (this=0x34c2618) at /usr/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
---Type <return> to continue, or q <return> to quit---
#3  0x000000000165eea2 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x34c2610) at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
#4  0x000000000165bdbd in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x34c25e0) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:103
#5  0x00007ffbf4bc3422 in ?? () from /usr/lib64/libglibmm-2.4.so.1
#6  0x00007ffbf5a53864 in ?? () from /usr/lib64/libglib-2.0.so.0
#7  0x00007ffbefd81c1a in start_thread () from /lib64/libpthread.so.0
#8  0x00007ffbefae6e7d in clone () from /lib64/libc.so.6

Thread 8 (Thread 16303):
#0  0x00007ffbf4969762 in g_value_init () from /usr/lib64/libgobject-2.0.so.0
#1  0x00007ffbf495b9c0 in g_signal_emit_valist () from /usr/lib64/libgobject-2.0.so.0
#2  0x00007ffbf495c1a3 in g_signal_emit () from /usr/lib64/libgobject-2.0.so.0
#3  0x00007ffbf416a34b in gtk_widget_show () from /usr/lib64/libgtk-x11-2.0.so.0
#4  0x0000000001638254 in ProcessorEntry::ProcessorEntry (this=0x4e1b9e0, p=..., w=Wide) at ../gtk2_ardour/processor_box.cc:129
#5  0x000000000164255b in ProcessorBox::add_processor_to_display (this=0x4b1d4f0, p=...) at ../gtk2_ardour/processor_box.cc:1237
#6  0x000000000165e84c in sigc::bound_mem_functor1<void, ProcessorBox, boost::weak_ptr<ARDOUR::Processor> >::operator() (this=0x4b44370, _A_a1=...)
    at /usr/include/sigc++-2.0/sigc++/functors/mem_fun.h:1851
#7  0x000000000165b79c in boost::detail::function::void_function_obj_invoker1<sigc::bound_mem_functor1<void, ProcessorBox, boost::weak_ptr<ARDOUR::Processor> >, void, boost::weak_ptr<ARDOUR::Processor> >::invoke (function_obj_ptr=..., a0=...) at /usr/include/boost/function/function_template.hpp:153
#8  0x000000000153c567 in boost::function1<void, boost::weak_ptr<ARDOUR::Processor> >::operator() (this=0x7fff5eefd6a0, a0=...)
    at /usr/include/boost/function/function_template.hpp:1013
#9  0x000000000153bdd4 in ARDOUR::Route::foreach_processor(boost::function<void(boost::weak_ptr<ARDOUR::Processor>)>) (this=0x7ffbe02555a0, method=...)
    at ../libs/ardour/ardour/route.h:191
#10 0x0000000001641b6b in ProcessorBox::redisplay_processors (this=0x4b1d4f0) at ../gtk2_ardour/processor_box.cc:1133
#11 0x0000000001641a61 in ProcessorBox::route_processors_changed (this=0x4b1d4f0, c=...) at ../gtk2_ardour/processor_box.cc:1119
#12 0x0000000001664058 in boost::_mfi::mf1<void, ProcessorBox, ARDOUR::RouteProcessorChange>::operator() (this=0x4e00328, p=0x4b1d4f0, a1=...)
    at /usr/include/boost/bind/mem_fn_template.hpp:165
#13 0x0000000001662ab6 in boost::_bi::list2<boost::_bi::value<ProcessorBox*>, boost::arg<1> >::operator()<boost::_mfi::mf1<void, ProcessorBox, ARDOUR::RouteProcessorChange>, boost::_bi::list1<ARDOUR::RouteProcessorChange&> > (this=0x4e00338, f=..., a=...) at /usr/include/boost/bind/bind.hpp:313
#14 0x00000000016607a2 in boost::_bi::bind_t<void, boost::_mfi::mf1<void, ProcessorBox, ARDOUR::RouteProcessorChange>, boost::_bi::list2<boost::_bi::value<ProcessorBox*>, boost::arg<1> > >::operator()<ARDOUR::RouteProcessorChange> (this=0x4e00328, a1=...) at /usr/include/boost/bind/bind_template.hpp:32
#15 0x000000000165dd65 in boost::_bi::protected_bind_t<boost::_bi::bind_t<void, boost::_mfi::mf1<void, ProcessorBox, ARDOUR::RouteProcessorChange>, boost::_bi::list2<boost::_bi::value<ProcessorBox*>, boost::arg<1> > > >::operator()<ARDOUR::RouteProcessorChange> (this=0x4e00328, a1=...) at /usr/include/boost/bind/protect.hpp:46
#16 0x000000000165ab33 in boost::detail::function::void_function_obj_invoker1<boost::_bi::protected_bind_t<boost::_bi::bind_t<void, boost::_mfi::mf1<void, ProcessorBox, ARDOUR::RouteProcessorChange>, boost::_bi::list2<boost::_bi::value<ProcessorBox*>, boost::arg<1> > > >, void, ARDOUR::RouteProcessorChange>::invoke (function_obj_ptr=..., a0=...)
    at /usr/include/boost/function/function_template.hpp:153
#17 0x0000000001514ac8 in boost::function1<void, ARDOUR::RouteProcessorChange>::operator() (this=0x4e00320, a0=...) at /usr/include/boost/function/function_template.hpp:1013
#18 0x000000000151388c in boost::_bi::list1<boost::_bi::value<ARDOUR::RouteProcessorChange> >::operator()<boost::function<void(ARDOUR::RouteProcessorChange)>, boost::_bi::list0>(boost::_bi::type<void>, boost::function<void(ARDOUR::RouteProcessorChange)> &, boost::_bi::list0 &, int) (this=0x4e00340, f=..., a=...) at /usr/include/boost/bind/bind.hpp:253
#19 0x0000000001512325 in boost::_bi::bind_t<boost::_bi::unspecified, boost::function<void(ARDOUR::RouteProcessorChange)>, boost::_bi::list1<boost::_bi::value<ARDOUR::RouteProcessorChange> > >::operator()(void) (this=0x4e00320) at /usr/include/boost/bind/bind_template.hpp:20
#20 0x0000000001510e3a in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<boost::_bi::unspecified, boost::function<void(ARDOUR::RouteProcessorChange)>, boost::_bi::list1<boost::_bi::value<ARDOUR::RouteProcessorChange> > >, void>::invoke(boost::detail::function::function_buffer &) (function_obj_ptr=...)
    at /usr/include/boost/function/function_template.hpp:153
#21 0x000000000104c991 in boost::function0<void>::operator() (this=0x7fff5eefda50) at /usr/include/boost/function/function_template.hpp:1013
#22 0x00007ffbf88c4e2e in AbstractUI<Gtkmm2ext::UIRequest>::call_slot(PBD::EventLoop::InvalidationRecord *, const boost::function<void()> &) (this=0x32cddf0, 
    invalidation=0x4b42d70, f=...) at ../libs/pbd/pbd/abstract_ui.cc:220
#23 0x000000000150b1ae in PBD::Signal1<void, ARDOUR::RouteProcessorChange, boost::signals2::optional_last_value<void> >::compositor(boost::function<void(ARDOUR::RouteProcessorChange)>, PBD::EventLoop *, PBD::EventLoop::InvalidationRecord *, ARDOUR::RouteProcessorChange) (f=..., event_loop=0x32cddf0, ir=0x4b42d70, arg=...) at ../libs/pbd/pbd/signals.h:136
#24 0x0000000001515b5b in boost::_bi::list4<boost::_bi::value<boost::function<void(ARDOUR::RouteProcessorChange)> >, boost::_bi::value<PBD::EventLoop*>, boost::_bi::value<PBD::EventLoop::InvalidationRecord*>, boost::arg<1> >::operator()<void (*)(boost::function<void(ARDOUR::RouteProcessorChange)>, PBD::EventLoop*, PBD::EventLoop::InvalidationRecord*, ARDOUR::RouteProcessorChange), boost::_bi::list1<ARDOUR::RouteProcessorChange&> >(boost::_bi::type<void>, void (*&)(boost::function<void(ARDOUR::RouteProcessorChange)>, PBD::EventLoop *, PBD::EventLoop::InvalidationRecord *, ARDOUR::RouteProcessorChange), boost::_bi::list1<ARDOUR::RouteProcessorChange&> &, int) (this=0x4b43038, f=@0x4b43030, a=...)
    at /usr/include/boost/bind/bind.hpp:457
---Type <return> to continue, or q <return> to quit---
#25 0x0000000001514b8e in boost::_bi::bind_t<void, void (*)(boost::function<void(ARDOUR::RouteProcessorChange)>, PBD::EventLoop*, PBD::EventLoop::InvalidationRecord*, ARDOUR::RouteProcessorChange), boost::_bi::list4<boost::_bi::value<boost::function<void(ARDOUR::RouteProcessorChange)> >, boost::_bi::value<PBD::EventLoop*>, boost::_bi::value<PBD::EventLoop::InvalidationRecord*>, boost::arg<1> > >::operator()<ARDOUR::RouteProcessorChange>(ARDOUR::RouteProcessorChange &) (this=0x4b43030, a1=...)
    at /usr/include/boost/bind/bind_template.hpp:32
#26 0x00000000015139c6 in boost::detail::function::void_function_obj_invoker1<boost::_bi::bind_t<void, void (*)(boost::function<void(ARDOUR::RouteProcessorChange)>, PBD::EventLoop*, PBD::EventLoop::InvalidationRecord*, ARDOUR::RouteProcessorChange), boost::_bi::list4<boost::_bi::value<boost::function<void(ARDOUR::RouteProcessorChange)> >, boost::_bi::value<PBD::EventLoop*>, boost::_bi::value<PBD::EventLoop::InvalidationRecord*>, boost::arg<1> > >, void, ARDOUR::RouteProcessorChange>::invoke(boost::detail::function::function_buffer &, ARDOUR::RouteProcessorChange) (function_obj_ptr=..., a0=...) at /usr/include/boost/function/function_template.hpp:153
#27 0x0000000001514ac8 in boost::function1<void, ARDOUR::RouteProcessorChange>::operator() (this=0x4b42fc8, a0=...) at /usr/include/boost/function/function_template.hpp:1013
#28 0x00007ffbf9d3396d in boost::signals2::detail::signal1_impl<void, ARDOUR::RouteProcessorChange, boost::signals2::optional_last_value<void>, int, std::less<int>, boost::function<void ()(ARDOUR::RouteProcessorChange)>, boost::function<void ()(boost::signals2::connection const&, ARDOUR::RouteProcessorChange)>, boost::signals2::mutex>::slot_invoker::m_invoke(boost::shared_ptr<boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot1<void, ARDOUR::RouteProcessorChange, boost::function<void ()(ARDOUR::RouteProcessorChange)> >, boost::signals2::mutex> > const&, boost::signals2::detail::void_type const*) const ()
   from /home/in0giro/programmazione/progetti/temporaneo/Ardour/3.0/gtk2_ardour/../build/default/libs/ardour/libardour.so.3
#29 0x00007ffbf9d324b7 in boost::signals2::detail::signal1_impl<void, ARDOUR::RouteProcessorChange, boost::signals2::optional_last_value<void>, int, std::less<int>, boost::function<void(ARDOUR::RouteProcessorChange)>, boost::function<void(const boost::signals2::connection&, ARDOUR::RouteProcessorChange)>, boost::signals2::mutex>::slot_invoker::operator()(const boost::shared_ptr<boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot1<void, ARDOUR::RouteProcessorChange, boost::function<void(ARDOUR::RouteProcessorChange)> >, boost::signals2::mutex> > &) const (this=0x7fff5eefdea0, connectionBody=...)
    at /usr/include/boost/signals2/detail/signal_template.hpp:340
#30 0x00007ffbf9d2faeb in boost::signals2::detail::slot_call_iterator_t<boost::signals2::detail::signal1_impl<void, ARDOUR::RouteProcessorChange, boost::signals2::optional_last_value<void>, int, std::less<int>, boost::function<void(ARDOUR::RouteProcessorChange)>, boost::function<void(const boost::signals2::connection&, ARDOUR::RouteProcessorChange)>, boost::signals2::mutex>::slot_invoker, std::_List_iterator<boost::shared_ptr<boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot1<void, ARDOUR::RouteProcessorChange, boost::function<void(ARDOUR::RouteProcessorChange)> >, boost::signals2::mutex> > >, boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot1<void, ARDOUR::RouteProcessorChange, boost::function<void(ARDOUR::RouteProcessorChange)> >, boost::signals2::mutex> >::dereference(void) const (this=0x7fff5eefdd30) at /usr/include/boost/signals2/detail/slot_call_iterator.hpp:82
#31 0x00007ffbf9d2d1b0 in boost::iterator_core_access::dereference<boost::signals2::detail::slot_call_iterator_t<boost::signals2::detail::signal1_impl<void, ARDOUR::RouteProcessorChange, boost::signals2::optional_last_value<void>, int, std::less<int>, boost::function<void(ARDOUR::RouteProcessorChange)>, boost::function<void(const boost::signals2::connection&, ARDOUR::RouteProcessorChange)>, boost::signals2::mutex>::slot_invoker, std::_List_iterator<boost::shared_ptr<boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot1<void, ARDOUR::RouteProcessorChange, boost::function<void(ARDOUR::RouteProcessorChange)> >, boost::signals2::mutex> > >, boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot1<void, ARDOUR::RouteProcessorChange, boost::function<void(ARDOUR::RouteProcessorChange)> >, boost::signals2::mutex> > >(const boost::signals2::detail::slot_call_iterator_t<boost::signals2::detail::signal1_impl<void, ARDOUR::RouteProcessorChange, boost::signals2::optional_last_value<void>, int, std::less<int>, boost::function<void(ARDOUR::RouteProcessorChange)>, boost::function<void(const boost::signals2::connection&, ARDOUR::RouteProcessorChange)>, boost::signals2::mutex>::slot_invoker, std::_List_iterator<boost::shared_ptr<boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot1<void, ARDOUR::RouteProcessorChange, boost::function<void(ARDOUR::RouteProcessorChange)> >, boost::signals2::mutex> > >, boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot1<void, ARDOUR::RouteProcessorChange, boost::function<void(ARDOUR::RouteProcessorChange)> >, boost::signals2::mutex> > &) (f=...)
    at /usr/include/boost/iterator/iterator_facade.hpp:516
#32 0x00007ffbf9d29f14 in boost::iterator_facade<boost::signals2::detail::slot_call_iterator_t<boost::signals2::detail::signal1_impl<void, ARDOUR::RouteProcessorChange, boost::signals2::optional_last_value<void>, int, std::less<int>, boost::function<void(ARDOUR::RouteProcessorChange)>, boost::function<void(const boost::signals2::connection&, ARDOUR::RouteProcessorChange)>, boost::signals2::mutex>::slot_invoker, std::_List_iterator<boost::shared_ptr<boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot1<void, ARDOUR::RouteProcessorChange, boost::function<void(ARDOUR::RouteProcessorChange)> >, boost::signals2::mutex> > >, boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot1<void, ARDOUR::RouteProcessorChange, boost::function<void(ARDOUR::RouteProcessorChange)> >, boost::signals2::mutex> >, boost::signals2::detail::void_type, boost::single_pass_traversal_tag, const boost::signals2::detail::void_type&, long int>::operator*(void) const (this=0x7fff5eefdd30) at /usr/include/boost/iterator/iterator_facade.hpp:634
#33 0x00007ffbf9d2627e in boost::signals2::optional_last_value<void>::operator()<boost::signals2::detail::slot_call_iterator_t<boost::signals2::detail::signal1_impl<void, ARDOUR::RouteProcessorChange, boost::signals2::optional_last_value<void>, int, std::less<int>, boost::function<void(ARDOUR::RouteProcessorChange)>, boost::function<void(const boost::signals2::connection&, ARDOUR::RouteProcessorChange)>, boost::signals2::mutex>::slot_invoker, std::_List_iterator<boost::shared_ptr<boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot1<void, ARDOUR::RouteProcessorChange, boost::function<void(ARDOUR::RouteProcessorChange)> >, boost::signals2::mutex> > >, boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot1<void, ARDOUR::RouteProcessorChange, boost::function<void(ARDOUR::RouteProcessorChange)> >, boost::signals2::mutex> > >(boost::signals2::detail::slot_call_iterator_t<boost::signals2::detail::signal1_impl<void, ARDOUR::RouteProcessorChange, boost::signals2::optional_last_value<void>, int, std::less<int>, boost::function<void(ARDOUR::RouteProcessorChange)>, boost::function<void(const boost::signals2::connection&, ARDOUR::RouteProcessorChange)>, boost::signals2::mutex>::slot_invoker, std::_List_iterator<boost::shared_ptr<boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot1<void, ARDOUR::RouteProcessorChange, boost::function<void(ARDOUR::RoutePr---Type <return> to continue, or q <return> to quit---
ocessorChange)> >, boost::signals2::mutex> > >, boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot1<void, ARDOUR::RouteProcessorChange, boost::function<void(ARDOUR::RouteProcessorChange)> >, boost::signals2::mutex> >, boost::signals2::detail::slot_call_iterator_t<boost::signals2::detail::signal1_impl<void, ARDOUR::RouteProcessorChange, boost::signals2::optional_last_value<void>, int, std::less<int>, boost::function<void(ARDOUR::RouteProcessorChange)>, boost::function<void(const boost::signals2::connection&, ARDOUR::RouteProcessorChange)>, boost::signals2::mutex>::slot_invoker, std::_List_iterator<boost::shared_ptr<boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot1<void, ARDOUR::RouteProcessorChange, boost::function<void(ARDOUR::RouteProcessorChange)> >, boost::signals2::mutex> > >, boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot1<void, ARDOUR::RouteProcessorChange, boost::function<void(ARDOUR::RouteProcessorChange)> >, boost::signals2::mutex> >) const (this=0x7ffbe02565b0, 
    first=..., last=...) at /usr/include/boost/signals2/optional_last_value.hpp:55
#34 0x00007ffbf9d230fd in boost::signals2::detail::combiner_invoker<void>::operator()<boost::signals2::optional_last_value<void>, boost::signals2::detail::slot_call_iterator_t<boost::signals2::detail::signal1_impl<void, ARDOUR::RouteProcessorChange, boost::signals2::optional_last_value<void>, int, std::less<int>, boost::function<void(ARDOUR::RouteProcessorChange)>, boost::function<void(const boost::signals2::connection&, ARDOUR::RouteProcessorChange)>, boost::signals2::mutex>::slot_invoker, std::_List_iterator<boost::shared_ptr<boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot1<void, ARDOUR::RouteProcessorChange, boost::function<void(ARDOUR::RouteProcessorChange)> >, boost::signals2::mutex> > >, boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot1<void, ARDOUR::RouteProcessorChange, boost::function<void(ARDOUR::RouteProcessorChange)> >, boost::signals2::mutex> > >(boost::signals2::optional_last_value<void> &, boost::signals2::detail::slot_call_iterator_t<boost::signals2::detail::signal1_impl<void, ARDOUR::RouteProcessorChange, boost::signals2::optional_last_value<void>, int, std::less<int>, boost::function<void(ARDOUR::RouteProcessorChange)>, boost::function<void(const boost::signals2::connection&, ARDOUR::RouteProcessorChange)>, boost::signals2::mutex>::slot_invoker, std::_List_iterator<boost::shared_ptr<boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot1<void, ARDOUR::RouteProcessorChange, boost::function<void(ARDOUR::RouteProcessorChange)> >, boost::signals2::mutex> > >, boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot1<void, ARDOUR::RouteProcessorChange, boost::function<void(ARDOUR::RouteProcessorChange)> >, boost::signals2::mutex> >, boost::signals2::detail::slot_call_iterator_t<boost::signals2::detail::signal1_impl<void, ARDOUR::RouteProcessorChange, boost::signals2::optional_last_value<void>, int, std::less<int>, boost::function<void(ARDOUR::RouteProcessorChange)>, boost::function<void(const boost::signals2::connection&, ARDOUR::RouteProcessorChange)>, boost::signals2::mutex>::slot_invoker, std::_List_iterator<boost::shared_ptr<boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot1<void, ARDOUR::RouteProcessorChange, boost::function<void(ARDOUR::RouteProcessorChange)> >, boost::signals2::mutex> > >, boost::signals2::detail::connection_body<std::pair<boost::signals2::detail::slot_meta_group, boost::optional<int> >, boost::signals2::slot1<void, ARDOUR::RouteProcessorChange, boost::function<void(ARDOUR::RouteProcessorChange)> >, boost::signals2::mutex> >) const (this=0x7fff5eefdf5f, combiner=..., first=..., last=...)
    at /usr/include/boost/signals2/detail/result_type_wrapper.hpp:64
#35 0x00007ffbf9d1f0c4 in boost::signals2::detail::signal1_impl<void, ARDOUR::RouteProcessorChange, boost::signals2::optional_last_value<void>, int, std::less<int>, boost::function<void(ARDOUR::RouteProcessorChange)>, boost::function<void(const boost::signals2::connection&, ARDOUR::RouteProcessorChange)>, boost::signals2::mutex>::operator()(ARDOUR::RouteProcessorChange) (this=0x7ffbe02564c0, arg1=...) at /usr/include/boost/signals2/detail/signal_template.hpp:246
#36 0x00007ffbf9d1a895 in boost::signals2::signal1<void, ARDOUR::RouteProcessorChange, boost::signals2::optional_last_value<void>, int, std::less<int>, boost::function<void(ARDOUR::RouteProcessorChange)>, boost::function<void(const boost::signals2::connection&, ARDOUR::RouteProcessorChange)>, boost::signals2::mutex>::operator()(ARDOUR::RouteProcessorChange)
    (this=0x7ffbe02558a8, arg1=...) at /usr/include/boost/signals2/detail/signal_template.hpp:675
#37 0x00007ffbf9d16cf1 in PBD::Signal1<void, ARDOUR::RouteProcessorChange, boost::signals2::optional_last_value<void> >::operator() (this=0x7ffbe02558a8, arg1=...)
    at ../libs/pbd/pbd/signals.h:161
#38 0x00007ffbf9d016a2 in ARDOUR::Route::add_processor (this=0x7ffbe02555a0, processor=..., iter=..., err=0x0, activation_allowed=true) at ../libs/ardour/route.cc:933
#39 0x00007ffbf9d00e34 in ARDOUR::Route::add_processor (this=0x7ffbe02555a0, processor=..., placement=ARDOUR::PreFader, err=0x0, activation_allowed=true)
    at ../libs/ardour/route.cc:852
#40 0x00007ffbf9d0ba71 in ARDOUR::Route::listen_via (this=0x7ffbe02555a0, route=..., placement=ARDOUR::PreFader) at ../libs/ardour/route.cc:2579
#41 0x00007ffbf9d5570e in ARDOUR::Session::add_internal_sends (this=0x48d59a0, dest=..., p=ARDOUR::PreFader, senders=...) at ../libs/ardour/session.cc:2141
#42 0x0000000001641981 in ProcessorBox::choose_aux (this=0x4b1d4f0, wr=...) at ../gtk2_ardour/processor_box.cc:1108
#43 0x0000000001648d5a in ProcessorBox::rb_choose_aux (wr=...) at ../gtk2_ardour/processor_box.cc:2064
#44 0x0000000001662fb0 in sigc::pointer_functor1<boost::weak_ptr<ARDOUR::Route>, void>::operator() (this=0x4dca8e0, _A_a1=...)
    at /usr/include/sigc++-2.0/sigc++/functors/ptr_fun.h:111
#45 0x0000000001660c35 in sigc::adaptor_functor<sigc::pointer_functor1<boost::weak_ptr<ARDOUR::Route>, void> >::operator()<boost::weak_ptr<ARDOUR::Route>&> (this=0x4dca8d8, 
    _A_arg1=...) at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:84
#46 0x000000000165e297 in sigc::bind_functor<-0x00000000000000001, sigc::pointer_functor1<boost::weak_ptr<ARDOUR::Route>, void>, boost::weak_ptr<ARDOUR::Route>, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil>::operator() (this=0x4dca8d0) at /usr/include/sigc++-2.0/sigc++/adaptors/bind.h:1110
#47 0x000000000165b176 in sigc::internal::slot_call0<sigc::bind_functor<-0x00000000000000001, sigc::pointer_functor1<boost::weak_ptr<ARDOUR::Route>, void>, boost::weak_ptr<ARDOUR::Route>, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil>, void>::call_it (rep=0x4dca8a0) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:103
#48 0x00007ffbf4bcf432 in Glib::SignalProxyNormal::slot0_void_callback(_GObject*, void*) () from /usr/lib64/libglibmm-2.4.so.1
#49 0x00007ffbf49442aa in g_closure_invoke () from /usr/lib64/libgobject-2.0.so.0
#50 0x00007ffbf495ab23 in ?? () from /usr/lib64/libgobject-2.0.so.0
#51 0x00007ffbf495bc18 in g_signal_emit_valist () from /usr/lib64/libgobject-2.0.so.0
---Type <return> to continue, or q <return> to quit---
#52 0x00007ffbf495c1a3 in g_signal_emit () from /usr/lib64/libgobject-2.0.so.0
#53 0x00007ffbf416654e in gtk_widget_activate () from /usr/lib64/libgtk-x11-2.0.so.0
#54 0x00007ffbf405a76d in gtk_menu_shell_activate_item () from /usr/lib64/libgtk-x11-2.0.so.0
#55 0x00007ffbf405bff7 in ?? () from /usr/lib64/libgtk-x11-2.0.so.0
#56 0x00007ffbf404c518 in ?? () from /usr/lib64/libgtk-x11-2.0.so.0
#57 0x00007ffbf49442aa in g_closure_invoke () from /usr/lib64/libgobject-2.0.so.0
#58 0x00007ffbf495a363 in ?? () from /usr/lib64/libgobject-2.0.so.0
#59 0x00007ffbf495ba2c in g_signal_emit_valist () from /usr/lib64/libgobject-2.0.so.0
#60 0x00007ffbf495c1a3 in g_signal_emit () from /usr/lib64/libgobject-2.0.so.0
#61 0x00007ffbf4162bff in ?? () from /usr/lib64/libgtk-x11-2.0.so.0
#62 0x00007ffbf4044983 in gtk_propagate_event () from /usr/lib64/libgtk-x11-2.0.so.0
#63 0x00007ffbf4045a3b in gtk_main_do_event () from /usr/lib64/libgtk-x11-2.0.so.0
#64 0x00007ffbf3cb8c0c in ?? () from /usr/lib64/libgdk-x11-2.0.so.0
#65 0x00007ffbf5a29bc1 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#66 0x00007ffbf5a2e258 in ?? () from /usr/lib64/libglib-2.0.so.0
#67 0x00007ffbf5a2e765 in g_main_loop_run () from /usr/lib64/libglib-2.0.so.0
#68 0x00007ffbf4045ed7 in gtk_main () from /usr/lib64/libgtk-x11-2.0.so.0
#69 0x00007ffbf88b68e2 in Gtkmm2ext::UI::run (this=0x32cddd0, old_receiver=...) at ../libs/gtkmm2ext/gtk_ui.cc:268
#70 0x00000000014a3498 in main (argc=2, argv=0x7fff5eeff2b8) at ../gtk2_ardour/main.cc:557

Thread 7 (Thread 16307):
#0  0x00007ffbefd8656c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007ffbf9e617eb in peak_thread_work () at ../libs/ardour/source_factory.cc:73
#2  0x0000000001661695 in sigc::pointer_functor0<void>::operator() (this=0x34c3b18) at /usr/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#3  0x000000000165eea2 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x34c3b10) at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
#4  0x000000000165bdbd in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x34c3ae0) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:103
#5  0x00007ffbf4bc3422 in ?? () from /usr/lib64/libglibmm-2.4.so.1
#6  0x00007ffbf5a53864 in ?? () from /usr/lib64/libglib-2.0.so.0
#7  0x00007ffbefd81c1a in start_thread () from /lib64/libpthread.so.0
#8  0x00007ffbefae6e7d in clone () from /lib64/libc.so.6

Thread 6 (Thread 16316):
#0  0x00007ffbefade1f3 in poll () from /lib64/libc.so.6
#1  0x00007ffbf5a2dfb9 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007ffbf5a2e765 in g_main_loop_run () from /usr/lib64/libglib-2.0.so.0
#3  0x00007ffbfae61fad in BaseUI::main_thread (this=0x49ad700) at ../libs/pbd/base_ui.cc:77
#4  0x00007ffbfae63469 in sigc::bound_mem_functor0<void, BaseUI>::operator() (this=0x49af568) at /usr/include/sigc++-2.0/sigc++/functors/mem_fun.h:1787
#5  0x00007ffbfae632c4 in sigc::adaptor_functor<sigc::bound_mem_functor0<void, BaseUI> >::operator() (this=0x49af560)
    at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
#6  0x00007ffbfae6301d in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, BaseUI>, void>::call_it (rep=0x49af530) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:103
#7  0x00007ffbf4bc3422 in ?? () from /usr/lib64/libglibmm-2.4.so.1
#8  0x00007ffbf5a53864 in ?? () from /usr/lib64/libglib-2.0.so.0
#9  0x00007ffbefd81c1a in start_thread () from /lib64/libpthread.so.0
#10 0x00007ffbefae6e7d in clone () from /lib64/libc.so.6

Thread 5 (Thread 16318):
#0  0x00007ffbefade1f3 in poll () from /lib64/libc.so.6
#1  0x00007ffbc1edcacf in ?? () from /usr/lib64/libpulse.so.0
#2  0x00007ffbc1ecc916 in pa_mainloop_poll () from /usr/lib64/libpulse.so.0
#3  0x00007ffbc1ecdcf9 in pa_mainloop_iterate () from /usr/lib64/libpulse.so.0
#4  0x00007ffbc1ecddb0 in pa_mainloop_run () from /usr/lib64/libpulse.so.0
#5  0x00007ffbc1edc8cb in ?? () from /usr/lib64/libpulse.so.0
#6  0x00007ffbc1c97c07 in ?? () from /usr/lib64/libpulsecommon-0.9.22.so
---Type <return> to continue, or q <return> to quit---
#7  0x00007ffbefd81c1a in start_thread () from /lib64/libpthread.so.0
#8  0x00007ffbefae6e7d in clone () from /lib64/libc.so.6

Thread 4 (Thread 16315):
#0  0x00007ffbefade1f3 in poll () from /lib64/libc.so.6
#1  0x00007ffbf9a4d2a8 in ARDOUR::Butler::thread_work (this=0x48daf20) at ../libs/ardour/butler.cc:159
#2  0x00007ffbf9a4d22f in ARDOUR::Butler::_thread_work (arg=0x48daf20) at ../libs/ardour/butler.cc:140
#3  0x00007ffbfae98882 in fake_thread_start (arg=0x49adc90) at ../libs/pbd/pthread_utils.cc:81
#4  0x00007ffbefd81c1a in start_thread () from /lib64/libpthread.so.0
#5  0x00007ffbefae6e7d in clone () from /lib64/libc.so.6

Thread 3 (Thread 16312):
#0  0x00007ffbefd88790 in sem_wait () from /lib64/libpthread.so.0
#1  0x00007ffbf9b47b40 in PBD::ProcessSemaphore::wait (this=0x48dc3a8) at ../libs/pbd/pbd/semutils.h:41
#2  0x00007ffbf9b475b4 in ARDOUR::Graph::routes_no_roll (this=0x48dc2a0, nframes=512, start_frame=0, end_frame=512, non_rt_pending=false, can_record=false, declick=0)
    at ../libs/ardour/graph.cc:589
#3  0x00007ffbf9de2461 in ARDOUR::Session::no_roll (this=0x48d59a0, nframes=512) at ../libs/ardour/session_process.cc:112
#4  0x00007ffbf9de3252 in ARDOUR::Session::process_with_events (this=0x48d59a0, nframes=512) at ../libs/ardour/session_process.cc:350
#5  0x00007ffbf9de215a in ARDOUR::Session::process (this=0x48d59a0, nframes=512) at ../libs/ardour/session_process.cc:75
#6  0x00007ffbf99c6bcf in ARDOUR::AudioEngine::process_callback (this=0x34ab740, nframes=512) at ../libs/ardour/audioengine.cc:515
#7  0x00007ffbf99c6850 in ARDOUR::AudioEngine::process_thread (this=0x34ab740) at ../libs/ardour/audioengine.cc:439
#8  0x00007ffbf99c6466 in ARDOUR::AudioEngine::_process_thread (arg=0x34ab740) at ../libs/ardour/audioengine.cc:352
#9  0x00007ffbf5d0c98b in Jack::JackClient::Execute (this=0x3222390) at ../common/JackClient.cpp:535
#10 0x00007ffbf5d20c5a in Jack::JackPosixThread::ThreadHandler (arg=<value optimized out>) at ../posix/JackPosixThread.cpp:59
#11 0x00007ffbefd81c1a in start_thread () from /lib64/libpthread.so.0
#12 0x00007ffbefae6e7d in clone () from /lib64/libc.so.6

Thread 2 (Thread 16314):
#0  0x00007ffbefd88790 in sem_wait () from /lib64/libpthread.so.0
#1  0x00007ffbf9b47b40 in PBD::ProcessSemaphore::wait (this=0x48dc368) at ../libs/pbd/pbd/semutils.h:41
#2  0x00007ffbf9b45d6e in ARDOUR::Graph::run_one (this=0x48dc2a0) at ../libs/ardour/graph.cc:393
#3  0x00007ffbf9b4611d in ARDOUR::Graph::helper_thread (this=0x48dc2a0) at ../libs/ardour/graph.cc:443
#4  0x00007ffbf9b4bd2b in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7ffbe40efca8, p=0x48dc2a0) at /usr/include/boost/bind/mem_fn_template.hpp:49
#5  0x00007ffbf9b4b714 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7ffbe40efcb8, f=..., 
    a=...) at /usr/include/boost/bind/bind.hpp:253
#6  0x00007ffbf9b4b2ef in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7ffbe40efca8)
    at /usr/include/boost/bind/bind_template.hpp:20
#7  0x00007ffbf9b4ae4e 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 /usr/include/boost/function/function_template.hpp:153
#8  0x000000000104c991 in boost::function0<void>::operator() (this=0x7ffbe40efca0) at /usr/include/boost/function/function_template.hpp:1013
#9  0x00007ffbf99ca8d7 in ARDOUR::AudioEngine::_start_process_thread (arg=0x48ec900) at ../libs/ardour/audioengine.cc:1500
#10 0x00007ffbefd81c1a in start_thread () from /lib64/libpthread.so.0
#11 0x00007ffbefae6e7d in clone () from /lib64/libc.so.6

Thread 1 (Thread 16313):
#0  0x00007ffbefa47355 in raise () from /lib64/libc.so.6
#1  0x00007ffbefa485ef in abort () from /lib64/libc.so.6
#2  0x00007ffbefa404c1 in __assert_fail () from /lib64/libc.so.6
#3  0x00000000010fe123 in boost::shared_ptr<ARDOUR::Panner>::operator-> (this=0x4dfabe8) at /usr/include/boost/smart_ptr/shared_ptr.hpp:418
#4  0x00007ffbf9c49c4b in ARDOUR::PannerShell::run (this=0x4dfaad0, inbufs=..., outbufs=..., start_frame=0, end_frame=512, nframes=512) at ../libs/ardour/panner_shell.cc:302
#5  0x00007ffbf9b5594b in ARDOUR::InternalSend::run (this=0x4df9e00, bufs=..., start_frame=0, end_frame=512, nframes=512) at ../libs/ardour/internal_send.cc:117
#6  0x00007ffbf9cff557 in ARDOUR::Route::process_output_buffers (this=0x7ffbe02555a0, bufs=..., start_frame=0, end_frame=512, nframes=512, declick=0, gain_automation_ok=true)
    at ../libs/ardour/route.cc:506
---Type <return> to continue, or q <return> to quit---
#7  0x00007ffbf9cffa13 in ARDOUR::Route::passthru (this=0x7ffbe02555a0, start_frame=0, end_frame=512, nframes=512, declick=0) at ../libs/ardour/route.cc:554
#8  0x00007ffbf9e844ef in ARDOUR::Track::no_roll (this=0x7ffbe02555a0, nframes=512, start_frame=0, end_frame=512, session_state_changing=false, can_record=false)
    at ../libs/ardour/track.cc:278
#9  0x00007ffbf9b47854 in ARDOUR::Graph::process_one_route (this=0x48dc2a0, route=0x7ffbe02555a0) at ../libs/ardour/graph.cc:607
#10 0x00007ffbf9b4c9cb in ARDOUR::GraphNode::process (this=0x7ffbe0255720) at ../libs/ardour/graphnode.cc:69
#11 0x00007ffbf9b45f19 in ARDOUR::Graph::run_one (this=0x48dc2a0) at ../libs/ardour/graph.cc:406
#12 0x00007ffbf9b46419 in ARDOUR::Graph::main_thread (this=0x48dc2a0) at ../libs/ardour/graph.cc:479
#13 0x00007ffbf9b4bd2b in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7ffbe4170ca8, p=0x48dc2a0) at /usr/include/boost/bind/mem_fn_template.hpp:49
#14 0x00007ffbf9b4b714 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7ffbe4170cb8, f=..., 
    a=...) at /usr/include/boost/bind/bind.hpp:253
#15 0x00007ffbf9b4b2ef in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7ffbe4170ca8)
    at /usr/include/boost/bind/bind_template.hpp:20
#16 0x00007ffbf9b4ae4e 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 /usr/include/boost/function/function_template.hpp:153
#17 0x000000000104c991 in boost::function0<void>::operator() (this=0x7ffbe4170ca0) at /usr/include/boost/function/function_template.hpp:1013
#18 0x00007ffbf99ca8d7 in ARDOUR::AudioEngine::_start_process_thread (arg=0x48ec730) at ../libs/ardour/audioengine.cc:1500
#19 0x00007ffbefd81c1a in start_thread () from /lib64/libpthread.so.0
#20 0x00007ffbefae6e7d in clone () from /lib64/libc.so.6