Bug#916595: vlc: program doesn't close its process in some cases

[Bernhard Übelacker <bernhardu@mailbox.org>]

Hello,
probably you can also add following debug symbol packages:

/usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so                       -> libgl1-mesa-dri-dbgsym
/usr/lib/x86_64-linux-gnu/libQt5DBus.so.5                           -> libqt5dbus5-dbgsym
/usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5                         -> libqt5gui5-dbgsym
/usr/lib/x86_64-linux-gnu/libvlc.so.5                               -> libvlc5-dbgsym
/usr/lib/x86_64-linux-gnu/libGLX_mesa.so.0                          -> libglx-mesa0-dbgsym
/usr/lib/x86_64-linux-gnu/vlc/plugins/video_output/libgl_plugin.so  -> vlc-plugin-video-output-dbgsym


And execute this slightly modified gdb command (just adds the "info thread"):

for pid in `pgrep vlc`; do gdb -q --pid $pid -ex "set pagination off" -ex "set width 0" -ex "info thread" -ex "thread apply all bt full" -ex "info share" -ex detach -ex quit; done 2>&1 | tee -a vlc_$(date +%Y-%m-%d_%H-%M-%S).txt


For the current gdb output this is visible:
- Thread  1 (tid=1662) is waiting for Thread  3 (tid=1664)
- Thread  3 (tid=1664) is waiting for Thread 30 (tid=1707)
- Thread 30 (tid=1707) is waiting in "xcb_wait_for_special_event", but
  just from the (current) stacks I cannot say from which thread this event should come from ...


Kind regards,
Bernhard