hello Daniel sorry for the delay answering
``` (gdb) frame 0 #0 0x00007f4ee113ac1d in async_ms_sleep (msg=0x7f4ee5cf11b0, milliseconds=250, act=0x7f4ee5e37ca8, cbname=0x0) at async_sleep.c:381 381 if(_async_ms_list->len >= MAX_MS_SLEEP_QUEUE) { (gdb) info locals ai = 0x7fff943fcc30 dsize = 0 t = 0x0 tindex = 0 tlabel = 15 atp = 0x0 at = 0x7e __FUNCTION__ = "async_ms_sleep" now = {tv_sec = 139976839739840, tv_usec = 112} upause = {tv_sec = 140735680595712, tv_usec = 5221289} (gdb) p _async_ms_list $1 = (struct async_ms_list *) 0x0 (gdb) p *_async_ms_list Cannot access memory at address 0x0 ```
best regards david escartin