[root@r3 ~]# gdb --args bird -d
GNU gdb (GDB) Red Hat Enterprise Linux 7.6.1-114.el7
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /usr/sbin/bird...Reading symbols from /usr/lib/debug/usr/sbin/bird.debug...done.
done.
(gdb) run
Starting program: /sbin/bird -d
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
bird: Started
bird: Reconfiguring

Program received signal SIGSEGV, Segmentation fault.
ospf_iface_reconfigure (ifa=0x69afe0, new=new@entry=0x6afab0) at ../../../proto/ospf/iface.c:758
758	  int new_stub = ospf_iface_stubby(new, ifa->addr);
Missing separate debuginfos, use: debuginfo-install glibc-2.17-260.el7.x86_64
(gdb) bt
#0  ospf_iface_reconfigure (ifa=0x69afe0, new=new@entry=0x6afab0) at ../../../proto/ospf/iface.c:758
#1  0x0000000000423230 in ospf_reconfigure (P=0x6842b0, c=0x6af630) at ../../../proto/ospf/ospf.c:694
#2  0x000000000040c0b0 in proto_reconfigure (type=1, nc=0x6af630, oc=0x680e90, p=0x6842b0) at ../../nest/proto.c:422
#3  protos_commit (new=new@entry=0x6adf30, old=0x67aee0, force_reconfig=force_reconfig@entry=0, type=type@entry=1) at ../../nest/proto.c:535
#4  0x0000000000441163 in config_do_commit (c=c@entry=0x6adf30, type=type@entry=1) at conf.c:271
#5  0x000000000044157f in config_commit (c=0x6adf30, type=type@entry=1, timeout=timeout@entry=0) at conf.c:361
#6  0x0000000000448243 in cmd_reconfig (name=<optimized out>, type=type@entry=1, timeout=0) at main.c:314
#7  0x000000000043cd37 in cf_parse () at cf-parse.y:1035
#8  0x000000000044142d in cli_parse (c=c@entry=0x7fffffffe130) at conf.c:173
#9  0x000000000040ed1a in cli_command (c=c@entry=0x6a78d0) at ../../nest/cli.c:271
#10 0x000000000040eeb5 in cli_event (data=0x6a78d0) at ../../nest/cli.c:300
#11 0x0000000000442012 in ev_run (e=0x6a7990) at event.c:85
#12 ev_run_list (l=0x679310 <global_event_list>) at event.c:142
#13 0x0000000000444629 in io_loop () at io.c:2097
#14 0x0000000000402fed in main (argc=<optimized out>, argv=<optimized out>) at main.c:885