Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fff8961c800 (LWP 10817)]
boost::detail::function::functor_manager<boost::_bi::bind_t<void, void (*)(boost::function<void ()>, PBD::EventLoop*, PBD::EventLoop::InvalidationRecord*), boost::_bi::list3<boost::_bi::value<boost::function<void ()> >, boost::_bi::value<PBD::EventLoop*>, boost::_bi::value<PBD::EventLoop::InvalidationRecord*> > > >::manager(boost::detail::function::function_buffer const&, boost::detail::function::function_buffer&, boost::detail::function::functor_manager_operation_type, mpl_::bool_<false>) (op=<optimized out>, out_buffer=..., in_buffer=...)
    at /usr/include/boost/function/function_base.hpp:380
380	            functor_type* new_f = new functor_type(*f);
(gdb) thread apply all bt

Thread 43 (Thread 0x7fff737fe700 (LWP 10827)):
#0  0x00007ffff1175199 in syscall () from /lib64/libc.so.6
#1  0x00007ffff5612d7f in g_cond_wait () from /usr/lib64/libglib-2.0.so.0
#2  0x00007ffff7795e1f in ArdourCanvas::WaveView::drawing_thread () at ../libs/canvas/wave_view.cc:1543
#3  0x00007ffff5b5edbd in ?? () from /usr/lib64/libglibmm-2.4.so.1
#4  0x00007ffff55f5855 in ?? () from /usr/lib64/libglib-2.0.so.0
#5  0x00007ffff2777424 in start_thread () from /lib64/libpthread.so.0
#6  0x00007ffff117968d in clone () from /lib64/libc.so.6

Thread 41 (Thread 0x7fffaf7fe700 (LWP 10825)):
#0  0x00007ffff1175199 in syscall () from /lib64/libc.so.6
#1  0x00007ffff5612e94 in g_cond_wait_until () from /usr/lib64/libglib-2.0.so.0
#2  0x00007ffff55a5a19 in ?? () from /usr/lib64/libglib-2.0.so.0
#3  0x00007ffff55a600b in g_async_queue_timeout_pop () from /usr/lib64/libglib-2.0.so.0
#4  0x00007ffff55f629a in ?? () from /usr/lib64/libglib-2.0.so.0
#5  0x00007ffff55f5855 in ?? () from /usr/lib64/libglib-2.0.so.0
#6  0x00007ffff2777424 in start_thread () from /lib64/libpthread.so.0
#7  0x00007ffff117968d in clone () from /lib64/libc.so.6

Thread 36 (Thread 0x7fffad7fa700 (LWP 10820)):
#0  0x00007ffff278056d in nanosleep () from /lib64/libpthread.so.0
#1  0x00007ffff55f6ea8 in g_usleep () from /usr/lib64/libglib-2.0.so.0
#2  0x00007ffff6b7e32a in ARDOUR::AutomationWatch::thread (this=0x5c69a00) at ../libs/ardour/automation_watch.cc:153
#3  0x00007ffff5b5edbd in ?? () from /usr/lib64/libglibmm-2.4.so.1
#4  0x00007ffff55f5855 in ?? () from /usr/lib64/libglib-2.0.so.0
#5  0x00007ffff2777424 in start_thread () from /lib64/libpthread.so.0
#6  0x00007ffff117968d in clone () from /lib64/libc.so.6

Thread 35 (Thread 0x7fffaffff700 (LWP 10819)):
#0  0x00007ffff277cfaf in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007ffff6e2b033 in ARDOUR::Session::emit_thread_run (this=0x164f200) at ../libs/ardour/session_process.cc:1313
#2  0x00007ffff6e2b059 in ARDOUR::Session::emit_thread (arg=<optimized out>)
    at ../libs/ardour/session_process.cc:1302
#3  0x00007ffff2777424 in start_thread () from /lib64/libpthread.so.0
#4  0x00007ffff117968d in clone () from /lib64/libc.so.6

Thread 34 (Thread 0x7fffadffb700 (LWP 10818)):
#0  0x00007ffff117060d in poll () from /lib64/libc.so.6
#1  0x00007ffff55cfe74 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007ffff55d01f2 in g_main_loop_run () from /usr/lib64/libglib-2.0.so.0
#3  0x00007ffff61fe594 in BaseUI::main_thread (this=0x261b5d0) at ../libs/pbd/base_ui.cc:86
#4  0x00007ffff5b5edbd in ?? () from /usr/lib64/libglibmm-2.4.so.1
#5  0x00007ffff55f5855 in ?? () from /usr/lib64/libglib-2.0.so.0
#6  0x00007ffff2777424 in start_thread () from /lib64/libpthread.so.0
#7  0x00007ffff117968d in clone () from /lib64/libc.so.6

Thread 33 (Thread 0x7fff8961c800 (LWP 10817)):
#0  boost::detail::function::functor_manager<boost::_bi::bind_t<void, void (*)(boost::function<void ()>, PBD::EventLoop*, PBD::EventLoop::InvalidationRecord*), boost::_bi::list3<boost::_bi::value<boost::function<void ()> >, boost::_bi::value<PBD::EventLoop*>, boost::_bi::value<PBD::EventLoop::InvalidationRecord*> > > >::manager(boost::detail::function::function_buffer const&, boost::detail::function::function_buffer&, boost::detail::function::functor_manager_operation_type, mpl_::bool_<false>) (op=<optimized out>, out_buffer=..., in_buffer=...)
    at /usr/include/boost/function/function_base.hpp:380
#1  boost::detail::function::functor_manager<boost::_bi::bind_t<void, void (*)(boost::function<void ()>, PBD::EventLoop*, PBD::EventLoop::InvalidationRecord*), boost::_bi::list3<boost::_bi::value<boost::function<void ()> >, boost::_bi::value<PBD::EventLoop*>, boost::_bi::value<PBD::EventLoop::InvalidationRecord*> > > >::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) (op=<optimized out>, out_buffer=..., in_buffer=...)
    at /usr/include/boost/function/function_base.hpp:412
#2  boost::detail::function::functor_manager<boost::_bi::bind_t<void, void (*)(boost::function<void ()>, PBD::EventLoop*, PBD::EventLoop::InvalidationRecord*), boost::_bi::list3<boost::_bi::value<boost::function<void ()> >, boost::_bi::value<PBD::EventLoop*>, boost::_bi::value<PBD::EventLoop::InvalidationRecord*> > > >::manage(boost::detail::function::function_buffer const&, boost::detail::function::function_buffer&, boost::detail::function::functor_manager_operation_type) (in_buffer=..., out_buffer=..., op=<optimized out>) at /usr/include/boost/function/function_base.hpp:440
#3  0x00000000004eb0f3 in boost::function<void ()>::function(boost::function<void ()> const&) (f=..., 
    this=0x7fff825af7c0) at /usr/include/boost/function/function_template.hpp:1097
#4  std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> >::pair(std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > const&) (this=0x7fff825af7b0)
    at /usr/lib/gcc/x86_64-pc-linux-gnu/5.3.0/include/g++-v5/bits/stl_pair.h:127
---Type <return> to continue, or q <return> to quit---
#5  __gnu_cxx::new_allocator<std::_Rb_tree_node<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > > >::construct<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> >, std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > const&>(std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> >*, std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > const&) (__p=<optimized out>, this=<optimized out>)
    at /usr/lib/gcc/x86_64-pc-linux-gnu/5.3.0/include/g++-v5/ext/new_allocator.h:120
#6  std::allocator_traits<std::allocator<std::_Rb_tree_node<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > > > >::_S_construct<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> >, std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > const&>(std::allocator<std::_Rb_tree_node<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > > >&, std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> >*, std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > const&) (__p=<optimized out>, __a=...)
    at /usr/lib/gcc/x86_64-pc-linux-gnu/5.3.0/include/g++-v5/bits/alloc_traits.h:256
#7  std::allocator_traits<std::allocator<std::_Rb_tree_node<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > > > >::construct<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> >, std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > const&>(std::allocator<std::_Rb_tree_node<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > > >&, std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> >*, std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > const&) (__p=<optimized out>, __a=...)
    at /usr/lib/gcc/x86_64-pc-linux-gnu/5.3.0/include/g++-v5/bits/alloc_traits.h:402
#8  std::_Rb_tree<boost::shared_ptr<PBD::Connection>, std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> >, std::_Select1st<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > >, std::less<boost::shared_ptr<PBD::Connection> >, std::allocator<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > > >::_M_construct_node<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > const&>(std::_Rb_tree_node<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > >*, std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > const&) (__node=0x7fff825af790, 
    this=<optimized out>) at /usr/lib/gcc/x86_64-pc-linux-gnu/5.3.0/include/g++-v5/bits/stl_tree.h:529
#9  std::_Rb_tree<boost::shared_ptr<PBD::Connection>, std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> >, std::_Select1st<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > >, std::less<boost::shared_ptr<PBD::Connection> >, std::allocator<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > > >::_M_create_node<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > const&>(std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > const&) (
    this=<optimized out>) at /usr/lib/gcc/x86_64-pc-linux-gnu/5.3.0/include/g++-v5/bits/stl_tree.h:546
#10 std::_Rb_tree<boost::shared_ptr<PBD::Connection>, std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> >, std::_Select1st<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > >, std::less<boost::shared_ptr<PBD::Connection> >, std::allocator<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > > >::_Reuse_or_alloc_node::operator()<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > const&>(std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > const&) (
    __arg=..., this=0x7fff8961b700) at /usr/lib/gcc/x86_64-pc-linux-gnu/5.3.0/include/g++-v5/bits/stl_tree.h:402
#11 std::_Rb_tree<boost::shared_ptr<PBD::Connection>, std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> >, std::_Select1st<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > >, std::less<boost::shared_ptr<PBD::Connection> >, std::allocator<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > > >::_M_clone_node<std::_Rb_tree<boost::shared_ptr<PBD::Connection>, std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> >, std::_Select1st<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > >, std::less<boost::shared_ptr<PBD::Connection> >, std::allocator<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > > >::_Reuse_or_alloc_node>(std::_Rb_tree_node<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > > const*, std::_Rb_tree<boost::shared_ptr<PBD::Connection>, std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> >, std::_Select1st<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > >, std::less<boost::shared_ptr<PBD::Connection> >, std::allocator<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > > >::_Reuse_or_alloc_node&) (
    this=0x7fff8961b720, __node_gen=..., __x=0x4056850)
    at /usr/lib/gcc/x86_64-pc-linux-gnu/5.3.0/include/g++-v5/bits/stl_tree.h:569
#12 std::_Rb_tree<boost::shared_ptr<PBD::Connection>, std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> >, std::_Select1st<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > >, std::less<boost::shared_ptr<PBD::Connection> >, std::allocator<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > > >::_M_copy<std::_Rb_tree<boost::shared_ptr<PBD::Connection>, std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> >, std::_Select1st<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > >, std::less<boost::shared_ptr<PBD::Connection> >, std::allocator<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > > >::_Reuse_or_alloc_node>(std::_Rb_tree_node<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > > const*, std::_Rb_tree_node<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > >*, std::_Rb_tree<boost::shared_ptr<PBD::Connection>, std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> >, std::_Select1st<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > >, std::less<boost::shared_ptr<PBD::Connection> >, std::allocator<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > > >::_Reuse_or_alloc_node&) (this=0x7fff8961b720, 
    __x=0x4056850, __p=0x7fff8961b728, __node_gen=...)
    at /usr/lib/gcc/x86_64-pc-linux-gnu/5.3.0/include/g++-v5/bits/stl_tree.h:1574
#13 0x00000000005445d9 in std::_Rb_tree<boost::shared_ptr<PBD::Connection>, std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> >, std::_Select1st<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > >, std::less<boost::shared_ptr<PBD::Connection> >, std::allocator<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > > >::operator=(std::_Rb_tree<boost::shared_ptr<PBD::Connection>, std::pair<b---Type <return> to continue, or q <return> to quit---
oost::shared_ptr<PBD::Connection> const, boost::function<void ()> >, std::_Select1st<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > >, std::less<boost::shared_ptr<PBD::Connection> >, std::allocator<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > > > const&) (__x=..., this=0x7fff8961b720)
    at /usr/lib/gcc/x86_64-pc-linux-gnu/5.3.0/include/g++-v5/bits/stl_tree.h:1478
#14 std::map<boost::shared_ptr<PBD::Connection>, boost::function<void ()>, std::less<boost::shared_ptr<PBD::Connection> >, std::allocator<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > > >::operator=(std::map<boost::shared_ptr<PBD::Connection>, boost::function<void ()>, std::less<boost::shared_ptr<PBD::Connection> >, std::allocator<std::pair<boost::shared_ptr<PBD::Connection> const, boost::function<void ()> > > > const&) (__x=..., 
    this=0x7fff8961b720) at /usr/lib/gcc/x86_64-pc-linux-gnu/5.3.0/include/g++-v5/bits/stl_map.h:298
#15 PBD::Signal0<void, PBD::OptionalLastValue<void> >::operator() (this=0x4009140)
    at /var/tmp/portage/media-sound/ardour-9999/work/ardour-9999/build/libs/pbd/pbd/signals_generated.h:295
#16 0x00007ffff6d831b0 in boost::_mfi::mf1<void, ARDOUR::Region, boost::weak_ptr<ARDOUR::Source> >::operator() (
    a1=..., p=<optimized out>, this=<optimized out>) at /usr/include/boost/bind/mem_fn_template.hpp:165
#17 boost::_bi::list2<boost::_bi::value<ARDOUR::Region*>, boost::_bi::value<boost::weak_ptr<ARDOUR::Source> > >::operator()<boost::_mfi::mf1<void, ARDOUR::Region, boost::weak_ptr<ARDOUR::Source> >, boost::_bi::list0> (
    a=<synthetic pointer>, f=..., this=<optimized out>) at /usr/include/boost/bind/bind.hpp:313
#18 boost::_bi::bind_t<void, boost::_mfi::mf1<void, ARDOUR::Region, boost::weak_ptr<ARDOUR::Source> >, boost::_bi::list2<boost::_bi::value<ARDOUR::Region*>, boost::_bi::value<boost::weak_ptr<ARDOUR::Source> > > >::operator() (
    this=<optimized out>) at /usr/include/boost/bind/bind.hpp:893
#19 boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf1<void, ARDOUR::Region, boost::weak_ptr<ARDOUR::Source> >, boost::_bi::list2<boost::_bi::value<ARDOUR::Region*>, boost::_bi::value<boost::weak_ptr<ARDOUR::Source> > > >, void>::invoke (function_obj_ptr=...)
    at /usr/include/boost/function/function_template.hpp:159
#20 0x00000000005446ec in boost::function0<void>::operator() (this=0x7fff825af730)
    at /usr/include/boost/function/function_template.hpp:773
#21 PBD::Signal0<void, PBD::OptionalLastValue<void> >::operator() (this=0x273a730)
    at /var/tmp/portage/media-sound/ardour-9999/work/ardour-9999/build/libs/pbd/pbd/signals_generated.h:312
#22 0x00007ffff6b04db4 in PBD::Destructible::drop_references (this=<optimized out>)
    at /var/tmp/portage/media-sound/ardour-9999/work/ardour-9999/libs/pbd/pbd/destructible.h:36
#23 ARDOUR::AudioDiskstream::transport_stopped_wallclock (this=0x2738f20, when=..., twhen=1454067253, 
    abort_capture=<optimized out>) at ../libs/ardour/audio_diskstream.cc:1554
#24 0x00007ffff6e6961a in ARDOUR::Session::non_realtime_stop (this=this@entry=0x164f200, abort=abort@entry=true, 
    on_entry=on_entry@entry=1, finished=@0x7fff8961bc5b: true) at ../libs/ardour/session_transport.cc:696
#25 0x00007ffff6e6a90e in ARDOUR::Session::butler_transport_work (this=0x164f200)
    at ../libs/ardour/session_transport.cc:443
#26 0x00007ffff6b8a1cd in ARDOUR::Butler::thread_work (this=this@entry=0x164c230) at ../libs/ardour/butler.cc:208
#27 0x00007ffff6b8af1e in ARDOUR::Butler::_thread_work (arg=0x164c230) at ../libs/ardour/butler.cc:156
#28 0x00007ffff621fbc6 in fake_thread_start (arg=0x261b3d0) at ../libs/pbd/pthread_utils.cc:101
#29 0x00007ffff2777424 in start_thread () from /lib64/libpthread.so.0
#30 0x00007ffff117968d in clone () from /lib64/libc.so.6

Thread 32 (Thread 0x7fffb47ff700 (LWP 10816)):
#0  0x00007ffff277f1e7 in do_futex_wait.constprop () from /lib64/libpthread.so.0
#1  0x00007ffff277f294 in __new_sem_wait_slow.constprop.0 () from /lib64/libpthread.so.0
#2  0x00007ffff6c2b112 in PBD::Semaphore::wait (this=0x1872758)
    at /var/tmp/portage/media-sound/ardour-9999/work/ardour-9999/libs/pbd/pbd/semutils.h:61
#3  ARDOUR::Graph::run_one (this=this@entry=0x1872680) at ../libs/ardour/graph.cc:387
#4  0x00007ffff6c2b1c8 in ARDOUR::Graph::helper_thread (this=0x1872680) at ../libs/ardour/graph.cc:418
#5  0x00007fffd629400f in boost::function0<void>::operator() (this=0x7fffb47fed60)
    at /usr/include/boost/function/function_template.hpp:773
#6  ARDOUR::JACKAudioBackend::_start_process_thread (arg=<optimized out>)
    at ../libs/backends/jack/jack_audiobackend.cc:936
#7  0x00007ffff2777424 in start_thread () from /lib64/libpthread.so.0
#8  0x00007ffff117968d in clone () from /lib64/libc.so.6

Thread 31 (Thread 0x7fffb4880700 (LWP 10815)):
#0  0x00007ffff277f1e7 in do_futex_wait.constprop () from /lib64/libpthread.so.0
#1  0x00007ffff277f294 in __new_sem_wait_slow.constprop.0 () from /lib64/libpthread.so.0
#2  0x00007ffff6c2b112 in PBD::Semaphore::wait (this=0x1872758)
    at /var/tmp/portage/media-sound/ardour-9999/work/ardour-9999/libs/pbd/pbd/semutils.h:61
#3  ARDOUR::Graph::run_one (this=this@entry=0x1872680) at ../libs/ardour/graph.cc:387
#4  0x00007ffff6c2b1c8 in ARDOUR::Graph::helper_thread (this=0x1872680) at ../libs/ardour/graph.cc:418
#5  0x00007fffd629400f in boost::function0<void>::operator() (this=0x7fffb487fd60)
    at /usr/include/boost/function/function_template.hpp:773
#6  ARDOUR::JACKAudioBackend::_start_process_thread (arg=<optimized out>)
    at ../libs/backends/jack/jack_audiobackend.cc:936
#7  0x00007ffff2777424 in start_thread () from /lib64/libpthread.so.0
#8  0x00007ffff117968d in clone () from /lib64/libc.so.6

Thread 30 (Thread 0x7fffb4901700 (LWP 10814)):
---Type <return> to continue, or q <return> to quit---
#0  0x00007ffff277f1e7 in do_futex_wait.constprop () from /lib64/libpthread.so.0
#1  0x00007ffff277f294 in __new_sem_wait_slow.constprop.0 () from /lib64/libpthread.so.0
#2  0x00007ffff6c2b112 in PBD::Semaphore::wait (this=0x1872758)
    at /var/tmp/portage/media-sound/ardour-9999/work/ardour-9999/libs/pbd/pbd/semutils.h:61
#3  ARDOUR::Graph::run_one (this=this@entry=0x1872680) at ../libs/ardour/graph.cc:387
#4  0x00007ffff6c2b1c8 in ARDOUR::Graph::helper_thread (this=0x1872680) at ../libs/ardour/graph.cc:418
#5  0x00007fffd629400f in boost::function0<void>::operator() (this=0x7fffb4900d60)
    at /usr/include/boost/function/function_template.hpp:773
#6  ARDOUR::JACKAudioBackend::_start_process_thread (arg=<optimized out>)
    at ../libs/backends/jack/jack_audiobackend.cc:936
#7  0x00007ffff2777424 in start_thread () from /lib64/libpthread.so.0
#8  0x00007ffff117968d in clone () from /lib64/libc.so.6

Thread 29 (Thread 0x7fffb4982700 (LWP 10813)):
#0  0x00007ffff277f1e7 in do_futex_wait.constprop () from /lib64/libpthread.so.0
#1  0x00007ffff277f294 in __new_sem_wait_slow.constprop.0 () from /lib64/libpthread.so.0
#2  0x00007ffff6c2b112 in PBD::Semaphore::wait (this=0x1872758)
    at /var/tmp/portage/media-sound/ardour-9999/work/ardour-9999/libs/pbd/pbd/semutils.h:61
#3  ARDOUR::Graph::run_one (this=this@entry=0x1872680) at ../libs/ardour/graph.cc:387
#4  0x00007ffff6c2b1c8 in ARDOUR::Graph::helper_thread (this=0x1872680) at ../libs/ardour/graph.cc:418
#5  0x00007fffd629400f in boost::function0<void>::operator() (this=0x7fffb4981d60)
    at /usr/include/boost/function/function_template.hpp:773
#6  ARDOUR::JACKAudioBackend::_start_process_thread (arg=<optimized out>)
    at ../libs/backends/jack/jack_audiobackend.cc:936
#7  0x00007ffff2777424 in start_thread () from /lib64/libpthread.so.0
#8  0x00007ffff117968d in clone () from /lib64/libc.so.6

Thread 28 (Thread 0x7fffb4a03700 (LWP 10812)):
#0  0x00007ffff277f1e7 in do_futex_wait.constprop () from /lib64/libpthread.so.0
#1  0x00007ffff277f294 in __new_sem_wait_slow.constprop.0 () from /lib64/libpthread.so.0
#2  0x00007ffff6c2bfc5 in PBD::Semaphore::wait (this=0x1872778)
    at /var/tmp/portage/media-sound/ardour-9999/work/ardour-9999/libs/pbd/pbd/semutils.h:61
#3  ARDOUR::Graph::restart_cycle (this=0x1872680) at ../libs/ardour/graph.cc:261
#4  0x00007ffff6c2c015 in ARDOUR::Graph::dec_ref (this=<optimized out>) at ../libs/ardour/graph.cc:248
#5  0x00007ffff6c2d9d7 in ARDOUR::GraphNode::finish (this=this@entry=0x2711440, chain=<optimized out>)
    at ../libs/ardour/graphnode.cc:71
#6  0x00007ffff6c2b14e in ARDOUR::Graph::run_one (this=this@entry=0x1872680) at ../libs/ardour/graph.cc:401
#7  0x00007ffff6c2b1c8 in ARDOUR::Graph::helper_thread (this=0x1872680) at ../libs/ardour/graph.cc:418
#8  0x00007fffd629400f in boost::function0<void>::operator() (this=0x7fffb4a02d60)
    at /usr/include/boost/function/function_template.hpp:773
#9  ARDOUR::JACKAudioBackend::_start_process_thread (arg=<optimized out>)
    at ../libs/backends/jack/jack_audiobackend.cc:936
#10 0x00007ffff2777424 in start_thread () from /lib64/libpthread.so.0
#11 0x00007ffff117968d in clone () from /lib64/libc.so.6

Thread 27 (Thread 0x7fffb4a84700 (LWP 10811)):
#0  0x00007ffff277f1e7 in do_futex_wait.constprop () from /lib64/libpthread.so.0
#1  0x00007ffff277f294 in __new_sem_wait_slow.constprop.0 () from /lib64/libpthread.so.0
#2  0x00007ffff6c2b112 in PBD::Semaphore::wait (this=0x1872758)
    at /var/tmp/portage/media-sound/ardour-9999/work/ardour-9999/libs/pbd/pbd/semutils.h:61
#3  ARDOUR::Graph::run_one (this=this@entry=0x1872680) at ../libs/ardour/graph.cc:387
#4  0x00007ffff6c2b1c8 in ARDOUR::Graph::helper_thread (this=0x1872680) at ../libs/ardour/graph.cc:418
#5  0x00007fffd629400f in boost::function0<void>::operator() (this=0x7fffb4a83d60)
    at /usr/include/boost/function/function_template.hpp:773
#6  ARDOUR::JACKAudioBackend::_start_process_thread (arg=<optimized out>)
    at ../libs/backends/jack/jack_audiobackend.cc:936
#7  0x00007ffff2777424 in start_thread () from /lib64/libpthread.so.0
#8  0x00007ffff117968d in clone () from /lib64/libc.so.6

Thread 26 (Thread 0x7fffb4b05700 (LWP 10810)):
#0  0x00007ffff277f1e7 in do_futex_wait.constprop () from /lib64/libpthread.so.0
#1  0x00007ffff277f294 in __new_sem_wait_slow.constprop.0 () from /lib64/libpthread.so.0
#2  0x00007ffff6c2b112 in PBD::Semaphore::wait (this=0x1872758)
    at /var/tmp/portage/media-sound/ardour-9999/work/ardour-9999/libs/pbd/pbd/semutils.h:61
#3  ARDOUR::Graph::run_one (this=this@entry=0x1872680) at ../libs/ardour/graph.cc:387
#4  0x00007ffff6c2c091 in ARDOUR::Graph::main_thread (this=0x1872680) at ../libs/ardour/graph.cc:456
#5  0x00007fffd629400f in boost::function0<void>::operator() (this=0x7fffb4b04d60)
    at /usr/include/boost/function/function_template.hpp:773
#6  ARDOUR::JACKAudioBackend::_start_process_thread (arg=<optimized out>)
    at ../libs/backends/jack/jack_audiobackend.cc:936
---Type <return> to continue, or q <return> to quit---
#7  0x00007ffff2777424 in start_thread () from /lib64/libpthread.so.0
#8  0x00007ffff117968d in clone () from /lib64/libc.so.6

Thread 25 (Thread 0x7fffcc111700 (LWP 10809)):
#0  0x00007ffff277f3b5 in do_futex_wait () from /lib64/libpthread.so.0
#1  0x00007ffff277f47f in __new_sem_wait_slow () from /lib64/libpthread.so.0
#2  0x00007ffff277f532 in sem_timedwait () from /lib64/libpthread.so.0
#3  0x00007fffd5e1b3be in ?? () from /usr/lib64/libjack.so.0
#4  0x00007fffd5e0488d in ?? () from /usr/lib64/libjack.so.0
#5  0x00007fffd5e02f77 in ?? () from /usr/lib64/libjack.so.0
#6  0x00007fffd6293d72 in ARDOUR::JACKAudioBackend::process_thread (this=0x13867f0)
    at ../libs/backends/jack/jack_audiobackend.cc:965
#7  0x00007fffd5e02eea in ?? () from /usr/lib64/libjack.so.0
#8  0x00007fffd5e1a980 in ?? () from /usr/lib64/libjack.so.0
#9  0x00007ffff2777424 in start_thread () from /lib64/libpthread.so.0
#10 0x00007ffff117968d in clone () from /lib64/libc.so.6

Thread 24 (Thread 0x7fffcc2c7700 (LWP 10808)):
#0  0x00007ffff277febd in read () from /lib64/libpthread.so.0
#1  0x00007fffd5e1c175 in ?? () from /usr/lib64/libjack.so.0
#2  0x00007fffd5e1eac8 in ?? () from /usr/lib64/libjack.so.0
#3  0x00007fffd5e1a980 in ?? () from /usr/lib64/libjack.so.0
#4  0x00007ffff2777424 in start_thread () from /lib64/libpthread.so.0
#5  0x00007ffff117968d in clone () from /lib64/libc.so.6

Thread 23 (Thread 0x7fffcef5a700 (LWP 10807)):
#0  0x00007ffff277cfaf in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fffd5e1b87c in ?? () from /usr/lib64/libjack.so.0
#2  0x00007fffd5e12d28 in ?? () from /usr/lib64/libjack.so.0
#3  0x00007fffd5e1a980 in ?? () from /usr/lib64/libjack.so.0
#4  0x00007ffff2777424 in start_thread () from /lib64/libpthread.so.0
#5  0x00007ffff117968d in clone () from /lib64/libc.so.6

Thread 15 (Thread 0x7fffcea50700 (LWP 10799)):
#0  0x00007ffff117060d in poll () from /lib64/libc.so.6
#1  0x00007ffff55cfe74 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007ffff55d01f2 in g_main_loop_run () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fffee362806 in ?? () from /usr/lib64/libgio-2.0.so.0
#4  0x00007ffff55f5855 in ?? () from /usr/lib64/libglib-2.0.so.0
#5  0x00007ffff2777424 in start_thread () from /lib64/libpthread.so.0
#6  0x00007ffff117968d in clone () from /lib64/libc.so.6

Thread 14 (Thread 0x7fffcfbd2700 (LWP 10798)):
#0  0x00007ffff117060d in poll () from /lib64/libc.so.6
#1  0x00007ffff55cfe74 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007ffff55cff7c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007ffff55cffb9 in ?? () from /usr/lib64/libglib-2.0.so.0
#4  0x00007ffff55f5855 in ?? () from /usr/lib64/libglib-2.0.so.0
#5  0x00007ffff2777424 in start_thread () from /lib64/libpthread.so.0
#6  0x00007ffff117968d in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7fffd6ce1700 (LWP 10791)):
#0  0x00007ffff1175199 in syscall () from /lib64/libc.so.6
#1  0x00007ffff5612d7f in g_cond_wait () from /usr/lib64/libglib-2.0.so.0
#2  0x00007ffff6b34533 in ARDOUR::AudioEngine::do_devicelist_update (this=0x111d560)
    at ../libs/ardour/audioengine.cc:559
#3  0x00007ffff5b5edbd in ?? () from /usr/lib64/libglibmm-2.4.so.1
#4  0x00007ffff55f5855 in ?? () from /usr/lib64/libglib-2.0.so.0
#5  0x00007ffff2777424 in start_thread () from /lib64/libpthread.so.0
#6  0x00007ffff117968d in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7fffd74e2700 (LWP 10790)):
#0  0x00007ffff1175199 in syscall () from /lib64/libc.so.6
#1  0x00007ffff5612d7f in g_cond_wait () from /usr/lib64/libglib-2.0.so.0
#2  0x00007ffff6b352ee in ARDOUR::AudioEngine::do_reset_backend (this=0x111d560) at ../libs/ardour/audioengine.cc:524
#3  0x00007ffff5b5edbd in ?? () from /usr/lib64/libglibmm-2.4.so.1
#4  0x00007ffff55f5855 in ?? () from /usr/lib64/libglib-2.0.so.0
#5  0x00007ffff2777424 in start_thread () from /lib64/libpthread.so.0
#6  0x00007ffff117968d in clone () from /lib64/libc.so.6

---Type <return> to continue, or q <return> to quit---
Thread 5 (Thread 0x7fffe4f3b700 (LWP 10789)):
#0  0x00007ffff1175199 in syscall () from /lib64/libc.so.6
#1  0x00007ffff5612d7f in g_cond_wait () from /usr/lib64/libglib-2.0.so.0
#2  0x00007ffff6af53fb in ARDOUR::Analyser::work () at ../libs/ardour/analyser.cc:86
#3  0x00007ffff5b5edbd in ?? () from /usr/lib64/libglibmm-2.4.so.1
#4  0x00007ffff55f5855 in ?? () from /usr/lib64/libglib-2.0.so.0
#5  0x00007ffff2777424 in start_thread () from /lib64/libpthread.so.0
#6  0x00007ffff117968d in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7fffe573c700 (LWP 10788)):
#0  0x00007ffff1175199 in syscall () from /lib64/libc.so.6
#1  0x00007ffff5612d7f in g_cond_wait () from /usr/lib64/libglib-2.0.so.0
#2  0x00007ffff6e8271b in peak_thread_work () at ../libs/ardour/source_factory.cc:71
#3  0x00007ffff5b5edbd in ?? () from /usr/lib64/libglibmm-2.4.so.1
#4  0x00007ffff55f5855 in ?? () from /usr/lib64/libglib-2.0.so.0
#5  0x00007ffff2777424 in start_thread () from /lib64/libpthread.so.0
#6  0x00007ffff117968d in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7fffe5f3d700 (LWP 10787)):
#0  0x00007ffff1175199 in syscall () from /lib64/libc.so.6
#1  0x00007ffff5612d7f in g_cond_wait () from /usr/lib64/libglib-2.0.so.0
#2  0x00007ffff6e8271b in peak_thread_work () at ../libs/ardour/source_factory.cc:71
#3  0x00007ffff5b5edbd in ?? () from /usr/lib64/libglibmm-2.4.so.1
#4  0x00007ffff55f5855 in ?? () from /usr/lib64/libglib-2.0.so.0
#5  0x00007ffff2777424 in start_thread () from /lib64/libpthread.so.0
#6  0x00007ffff117968d in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7fffe673e700 (LWP 10786)):
#0  0x00007ffff278056d in nanosleep () from /lib64/libpthread.so.0
#1  0x00007ffff55f6ea8 in g_usleep () from /usr/lib64/libglib-2.0.so.0
#2  0x0000000000b6c958 in gui_event_loop (ptr=<optimized out>) at ../gtk2_ardour/linux_vst_gui_support.cc:475
#3  0x00007ffff2777424 in start_thread () from /lib64/libpthread.so.0
#4  0x00007ffff117968d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7ffff7f908c0 (LWP 10782)):
#0  0x00007ffff55ebbb5 in g_slice_alloc () from /usr/lib64/libglib-2.0.so.0
#1  0x00007ffff4ac26ce in gdk_region_new () from /usr/lib64/libgdk-x11-2.0.so.0
#2  0x00007ffff4ac2833 in gdk_region_copy () from /usr/lib64/libgdk-x11-2.0.so.0
#3  0x00007ffff4acce3f in ?? () from /usr/lib64/libgdk-x11-2.0.so.0
#4  0x00007ffff4acd1c6 in ?? () from /usr/lib64/libgdk-x11-2.0.so.0
#5  0x00007ffff4f8107a in gtk_widget_queue_draw_area () from /usr/lib64/libgtk-x11-2.0.so.0
#6  0x00007ffff77746ed in ArdourCanvas::Canvas::queue_draw_item_area (this=0x1514758, item=<optimized out>, area=...)
    at ../libs/canvas/canvas.cc:354
#7  0x00007ffff7774b51 in ArdourCanvas::GtkCanvas::item_going_away (this=0x1514758, item=0x405c170, bounding_box=...)
    at ../libs/canvas/canvas.cc:724
#8  0x00007ffff7781f71 in ArdourCanvas::Item::~Item (this=0x405c170, __in_chrg=<optimized out>)
    at ../libs/canvas/item.cc:100
#9  0x00007ffff77993a7 in ArdourCanvas::WaveView::~WaveView (this=0x405c170, __in_chrg=<optimized out>)
    at ../libs/canvas/wave_view.cc:144
#10 0x00007ffff7799489 in ArdourCanvas::WaveView::~WaveView (this=0x405c170, __in_chrg=<optimized out>)
    at ../libs/canvas/wave_view.cc:150
#11 0x00007ffff77807a4 in ArdourCanvas::Item::clear_items (this=this@entry=0x405bb40, 
    with_delete=with_delete@entry=true) at ../libs/canvas/item.cc:930
#12 0x00007ffff7781f7e in ArdourCanvas::Item::~Item (this=0x405bb40, __in_chrg=<optimized out>)
    at ../libs/canvas/item.cc:103
#13 0x00007ffff777c84f in ArdourCanvas::Container::~Container (this=0x405bb40, __in_chrg=<optimized out>)
    at ../libs/canvas/canvas/container.h:39
#14 ArdourCanvas::Container::~Container (this=0x405bb40, __in_chrg=<optimized out>)
    at ../libs/canvas/canvas/container.h:39
#15 0x0000000000aef3e4 in TimeAxisViewItem::~TimeAxisViewItem (this=0x405b7b0, __vtt_parm=<optimized out>, 
    __in_chrg=<optimized out>) at ../gtk2_ardour/time_axis_view_item.cc:261
#16 0x00000000005421d7 in AudioRegionView::~AudioRegionView (this=this@entry=0x405b7b0, __in_chrg=<optimized out>, 
    __vtt_parm=<optimized out>) at ../gtk2_ardour/audio_region_view.cc:292
#17 0x00000000005422f9 in AudioRegionView::~AudioRegionView (this=0x405b7b0, __in_chrg=<optimized out>, 
    __vtt_parm=<optimized out>) at ../gtk2_ardour/audio_region_view.cc:308
#18 0x0000000000ac4252 in StreamView::remove_region_view (this=0x4a1f460, weak_r=...)
    at ../gtk2_ardour/streamview.cc:193
#19 0x000000000054caa0 in boost::_mfi::mf1<void, StreamView, boost::weak_ptr<ARDOUR::Region> >::call<AudioStreamView*, boost::weak_ptr<ARDOUR::Region> > (b1=..., u=<optimized out>, this=<optimized out>)
    at /usr/include/boost/bind/mem_fn_template.hpp:156
---Type <return> to continue, or q <return> to quit---
#20 boost::_mfi::mf1<void, StreamView, boost::weak_ptr<ARDOUR::Region> >::operator()<AudioStreamView*> (a1=..., 
    u=<optimized out>, this=<optimized out>) at /usr/include/boost/bind/mem_fn_template.hpp:171
#21 boost::_bi::list2<boost::_bi::value<AudioStreamView*>, boost::_bi::value<boost::weak_ptr<ARDOUR::Region> > >::operator()<boost::_mfi::mf1<void, StreamView, boost::weak_ptr<ARDOUR::Region> >, boost::_bi::list0> (
    a=<synthetic pointer>, f=..., this=<optimized out>) at /usr/include/boost/bind/bind.hpp:313
#22 boost::_bi::bind_t<void, boost::_mfi::mf1<void, StreamView, boost::weak_ptr<ARDOUR::Region> >, boost::_bi::list2<boost::_bi::value<AudioStreamView*>, boost::_bi::value<boost::weak_ptr<ARDOUR::Region> > > >::operator() (
    this=<optimized out>) at /usr/include/boost/bind/bind.hpp:893
#23 boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf1<void, StreamView, boost::weak_ptr<ARDOUR::Region> >, boost::_bi::list2<boost::_bi::value<AudioStreamView*>, boost::_bi::value<boost::weak_ptr<ARDOUR::Region> > > >, void>::invoke (function_obj_ptr=...)
    at /usr/include/boost/function/function_template.hpp:159
#24 0x00000000004b7efb in boost::function0<void>::operator() (this=<optimized out>)
    at /usr/include/boost/function/function_template.hpp:773
#25 boost::_bi::list0::operator()<boost::function<void ()>, boost::_bi::list0>(boost::_bi::type<void>, boost::function<void ()>&, boost::_bi::list0&, int) (this=<optimized out>, f=...) at /usr/include/boost/bind/bind.hpp:192
#26 boost::_bi::bind_t<boost::_bi::unspecified, boost::function<void ()>, boost::_bi::list0>::operator()() (
    this=<optimized out>) at /usr/include/boost/bind/bind.hpp:893
#27 boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<boost::_bi::unspecified, boost::function<void ()>, boost::_bi::list0>, void>::invoke(boost::detail::function::function_buffer&) (function_obj_ptr=...)
    at /usr/include/boost/function/function_template.hpp:159
#28 0x00007ffff74ce2f3 in boost::function0<void>::operator() (this=0x7fffffffc4a0)
    at /usr/include/boost/function/function_template.hpp:773
#29 AbstractUI<Gtkmm2ext::UIRequest>::call_slot(PBD::EventLoop::InvalidationRecord*, boost::function<void ()> const&)
    (this=0x1203570, invalidation=0x405b400, f=...)
    at /var/tmp/portage/media-sound/ardour-9999/work/ardour-9999/libs/pbd/pbd/abstract_ui.cc:410
#30 0x00000000004b6a0f in PBD::Signal0<void, PBD::OptionalLastValue<void> >::compositor(boost::function<void ()>, PBD::EventLoop*, PBD::EventLoop::InvalidationRecord*) (f=..., event_loop=0x1203570, ir=0x405b400)
    at /var/tmp/portage/media-sound/ardour-9999/work/ardour-9999/build/libs/pbd/pbd/signals_generated.h:203
#31 0x00000000004b638a in boost::_bi::list3<boost::_bi::value<boost::function<void ()> >, boost::_bi::value<PBD::EventLoop*>, boost::_bi::value<PBD::EventLoop::InvalidationRecord*> >::operator()<void (*)(boost::function<void ()>, PBD::EventLoop*, PBD::EventLoop::InvalidationRecord*), boost::_bi::list0>(boost::_bi::type<void>, void (*&)(boost::function<void ()>, PBD::EventLoop*, PBD::EventLoop::InvalidationRecord*), boost::_bi::list0&, int) (a=<synthetic pointer>, 
    f=<optimized out>, this=<optimized out>) at /usr/include/boost/bind/bind.hpp:392
#32 boost::_bi::bind_t<void, void (*)(boost::function<void ()>, PBD::EventLoop*, PBD::EventLoop::InvalidationRecord*), boost::_bi::list3<boost::_bi::value<boost::function<void ()> >, boost::_bi::value<PBD::EventLoop*>, boost::_bi::value<PBD::EventLoop::InvalidationRecord*> > >::operator()() (this=<optimized out>)
    at /usr/include/boost/bind/bind.hpp:893
#33 boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, void (*)(boost::function<void ()>, PBD::EventLoop*, PBD::EventLoop::InvalidationRecord*), boost::_bi::list3<boost::_bi::value<boost::function<void ()> >, boost::_bi::value<PBD::EventLoop*>, boost::_bi::value<PBD::EventLoop::InvalidationRecord*> > >, void>::invoke(boost::detail::function::function_buffer&) (function_obj_ptr=...) at /usr/include/boost/function/function_template.hpp:159
#34 0x000000000054a750 in boost::function0<void>::operator() (this=0x144cfd0)
    at /usr/include/boost/function/function_template.hpp:773
#35 PBD::Signal0<void, PBD::OptionalLastValue<void> >::operator() (this=0x400b070)
    at /var/tmp/portage/media-sound/ardour-9999/work/ardour-9999/build/libs/pbd/pbd/signals_generated.h:312
#36 PBD::Destructible::drop_references (this=0x400b028)
    at /var/tmp/portage/media-sound/ardour-9999/work/ardour-9999/libs/pbd/pbd/destructible.h:36
#37 AudioStreamView::setup_rec_box (this=0x4a1f460) at ../gtk2_ardour/audio_streamview.cc:269
#38 0x00000000004b7efb in boost::function0<void>::operator() (this=<optimized out>)
    at /usr/include/boost/function/function_template.hpp:773
#39 boost::_bi::list0::operator()<boost::function<void ()>, boost::_bi::list0>(boost::_bi::type<void>, boost::function<void ()>&, boost::_bi::list0&, int) (this=<optimized out>, f=...) at /usr/include/boost/bind/bind.hpp:192
#40 boost::_bi::bind_t<boost::_bi::unspecified, boost::function<void ()>, boost::_bi::list0>::operator()() (
    this=<optimized out>) at /usr/include/boost/bind/bind.hpp:893
#41 boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<boost::_bi::unspecified, boost::function<void ()>, boost::_bi::list0>, void>::invoke(boost::detail::function::function_buffer&) (function_obj_ptr=...)
    at /usr/include/boost/function/function_template.hpp:159
#42 0x00007ffff74c8de8 in boost::function0<void>::operator() (this=0x7fffb4c933f8)
    at /usr/include/boost/function/function_template.hpp:773
#43 Gtkmm2ext::UI::do_request (this=<optimized out>, req=0x7fffb4c933e8) at ../libs/gtkmm2ext/gtk_ui.cc:459
#44 0x00007ffff74ce73c in AbstractUI<Gtkmm2ext::UIRequest>::handle_ui_requests (this=0x1203570)
    at /var/tmp/portage/media-sound/ardour-9999/work/ardour-9999/libs/pbd/pbd/abstract_ui.cc:226
#45 0x00007ffff61fe457 in BaseUI::request_handler (this=0x1203570, ioc=<optimized out>) at ../libs/pbd/base_ui.cc:141
#46 0x00007ffff6207999 in sigc::slot1<bool, Glib::IOCondition>::operator() (_A_a1=@0x7fffffffc8ec: Glib::IO_IN, 
    this=<optimized out>) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:570
#47 cross_thread_channel_call_receive_slot (condition=<optimized out>, data=<optimized out>)
    at ../libs/pbd/crossthread.cc:49
#48 0x00007ffff55cfb5a in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#49 0x00007ffff55cfed8 in ?? () from /usr/lib64/libglib-2.0.so.0
---Type <return> to continue, or q <return> to quit---
#50 0x00007ffff55d01f2 in g_main_loop_run () from /usr/lib64/libglib-2.0.so.0
#51 0x00007ffff4e6e487 in gtk_main () from /usr/lib64/libgtk-x11-2.0.so.0
#52 0x00007ffff74c6e86 in Gtkmm2ext::UI::run (this=this@entry=0x1203570, old_receiver=...)
    at ../libs/gtkmm2ext/gtk_ui.cc:284
#53 0x000000000048f564 in main (argc=1, argv=0x7fffffffcc58) at ../gtk2_ardour/main.cc:396