segfault on running "show mem" command with bird-3.0alpha2

[Prem Anand]

Hi All,
I am seeing this segfault with bird-3.0alpha2 on trying to run the "show mem" command. Not sure if it is a known issue. Just thought of reporting it.

By the way, bird-3.0 though in alpha, looks really stable. Was able to scale upto 1K BGP Sessions without any major issues. Eagerly looking for a 3.0 stable release soon.

Regards
Prem

Thread 1 "bird" received signal SIGSEGV, Segmentation fault.
0x00005555555841c3 in rmemsize (res=<optimized out>) at lib/resource.c:271
271       if (!r->class->memsize)
(gdb) bt
#0  0x00005555555841c3 in rmemsize (res=<optimized out>) at lib/resource.c:271
#1  cmd_show_memory () at nest/cmds.c:122
#2  0x000055555560c03e in cf_parse.isra.0 () at nest/config.Y:640
#3  0x000055555556a523 in cli_parse (c=0x7fffffffd920) at conf/conf.c:179
#4  0x00005555555837fd in cli_command (c=c at entry=0x5555556bb338) at nest/cli.c:273
#5  0x0000555555583b3c in cli_event (data=0x5555556bb338) at nest/cli.c:302
#6  0x00005555555786cb in ev_run_list_limited (l=0x555555681000 <global_event_list>, limit=4294967294) at lib/event.c:331
#7  0x0000555555566e14 in io_loop () at sysdep/unix/io.c:2216
#8  main (argc=<optimized out>, argv=<optimized out>) at sysdep/unix/main.c:972
(gdb) f 1
#1  cmd_show_memory () at nest/cmds.c:122
122       struct resmem total = rmemsize(&root_pool);
(gdb) print root_pool
$3 = {r = {n = {next = 0x0, prev = 0x0, list = 0x0}, class = 0x0}, inside = {first = 0x555555685360, last = 0x5555556bb630}, domain = 0x555555680e40 <the_bird_domain_gen.lto_priv>, name = 0x555555656735 "Root"}
(gdb) print root_pool->r->class
$5 = (const struct resclass *) 0x0
(gdb)