(gdb) f 3
#3  0x00007fb35c146d3d in nats_destroy_workers () at nats_mod.c:591
591                             uv_poll_stop(&pub_worker->poll);
(gdb) p *pub_worker
$1 = {pid = 0, fd = 0, uvLoop = 0x0, pipe = {data = 0x0, loop = 0x0, type = UV_UNKNOWN_HANDLE, close_cb = 0x0, handle_queue = {0x0, 0x0}, u = {fd = 0, reserved = {0x0, 0x0, 0x0, 0x0}}, next_closing = 0x0, flags = 0, write_queue_size = 0, alloc_cb = 0x0, read_cb = 0x0, connect_req = 0x0,
    shutdown_req = 0x0, io_watcher = {cb = 0x0, pending_queue = {0x0, 0x0}, watcher_queue = {0x0, 0x0}, pevents = 0, events = 0, fd = 0}, write_queue = {0x0, 0x0}, write_completed_queue = {0x0, 0x0}, connection_cb = 0x0, delayed_error = 0, accepted_fd = 0, queued_fds = 0x0, ipc = 0,
    pipe_fname = 0x0}, poll = {data = 0x0, loop = 0x0, type = UV_UNKNOWN_HANDLE, close_cb = 0x0, handle_queue = {0x0, 0x0}, u = {fd = 0, reserved = {0x0, 0x0, 0x0, 0x0}}, next_closing = 0x0, flags = 0, poll_cb = 0x0, io_watcher = {cb = 0x0, pending_queue = {0x0, 0x0}, watcher_queue = {0x0,
        0x0}, pevents = 0, events = 0, fd = 0}}, nc = 0x0}
(gdb)