Including same directory twice is not working

[Chinnapaiyan, Nagamani]

Hi,

I am using 4.0.x branch(#fed87e6406e291d472c20a5cabbe7324ce7148f2).

dhcp site file:
recv DHCP-Discover {
...
        $INCLUDE ${raddbdir}/dhcp-subconfigs/devstack01/ut/subconfigs_discover/
...
}
recv DHCP-Request {
...
        $INCLUDE ${raddbdir}/dhcp-subconfigs/devstack01/ut/subconfigs_request/
...
}
recv DHCP-Inform {
...
        $INCLUDE ${raddbdir}/dhcp-subconfigs/devstack01/ut/subconfigs/
...
}
recv DHCP-Release {
...
        $INCLUDE ${raddbdir}/dhcp-subconfigs/devstack01/ut/subconfigs/
...
}

All these ${raddbdir}/dhcp-subconfigs/devstack01/ut/subconfigs*/ directories have same files in them.
subconfigs:
1_biz.cfg  2_res.cfg  3_vut.cfg  4_sim.cfg  5_ut.cfg  6_simut.cfg

subconfigs_discover:
1_biz.cfg  2_res.cfg  3_vut.cfg  4_sim.cfg  5_ut.cfg  6_simut.cfg

subconfigs_request:
1_biz.cfg  2_res.cfg  3_vut.cfg  4_sim.cfg  5_ut.cfg  6_simut.cfg

If directory names are different (but same files in them), INCLUDE works without any problem. But if I include same directory twice it segfaults.

radius debug output:
# /usr/sbin/radiusd -X
Info  : FreeRADIUS Version 4.0.0
Info  : Copyright 1999-2019 The FreeRADIUS server project and contributors
Info  : There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
Info  : PARTICULAR PURPOSE
Info  : You may redistribute copies of FreeRADIUS under the terms of the
Info  : GNU General Public License
Info  : For more information about these matters, see the file named COPYRIGHT
Info  : Starting - reading configuration files ...
Debug : Including dictionary file "/etc/raddb/dictionary"
including configuration file /etc/raddb/radiusd.conf
including configuration file /etc/raddb/clients.conf
Including files in directory "/etc/raddb/mods-enabled/"
including configuration file /etc/raddb/mods-enabled/redis
including configuration file /etc/raddb/mods-enabled/redis_ippool
including configuration file /etc/raddb/mods-enabled/ldap
including configuration file /etc/raddb/mods-enabled/linelog_dhcp
including configuration file /etc/raddb/mods-enabled/dhcpv4
including configuration file /etc/raddb/mods-enabled/always
including configuration file /etc/raddb/mods-enabled/expr
Including files in directory "/etc/raddb/policy.d/"
including configuration file /etc/raddb/policy.d/abfab-tr
including configuration file /etc/raddb/policy.d/accounting
including configuration file /etc/raddb/policy.d/canonicalization
including configuration file /etc/raddb/policy.d/control
including configuration file /etc/raddb/policy.d/cui
including configuration file /etc/raddb/policy.d/debug
including configuration file /etc/raddb/policy.d/dhcp
including configuration file /etc/raddb/policy.d/eap
including configuration file /etc/raddb/policy.d/filter
including configuration file /etc/raddb/policy.d/operator-name
including configuration file /etc/raddb/policy.d/time
including configuration file /etc/raddb/policy.d/vendor
Including files in directory "/etc/raddb/sites-enabled/"
including configuration file /etc/raddb/sites-enabled/dhcp
Loaded module "proto_dhcpv4"
Including files in directory "/etc/raddb/dhcp-subconfigs/devstack01/ut/subconfigs_discover/"
including configuration file /etc/raddb/dhcp-subconfigs/devstack01/ut/subconfigs_discover/1_biz.cfg
including configuration file /etc/raddb/dhcp-subconfigs/devstack01/ut/subconfigs_discover/2_res.cfg
including configuration file /etc/raddb/dhcp-subconfigs/devstack01/ut/subconfigs_discover/3_vut.cfg
including configuration file /etc/raddb/dhcp-subconfigs/devstack01/ut/subconfigs_discover/4_sim.cfg
including configuration file /etc/raddb/dhcp-subconfigs/devstack01/ut/subconfigs_discover/5_ut.cfg
including configuration file /etc/raddb/dhcp-subconfigs/devstack01/ut/subconfigs_discover/6_simut.cfg
Including files in directory "/etc/raddb/dhcp-subconfigs/devstack01/ut/subconfigs_request/"
including configuration file /etc/raddb/dhcp-subconfigs/devstack01/ut/subconfigs_request/1_biz.cfg
including configuration file /etc/raddb/dhcp-subconfigs/devstack01/ut/subconfigs_request/2_res.cfg
including configuration file /etc/raddb/dhcp-subconfigs/devstack01/ut/subconfigs_request/3_vut.cfg
including configuration file /etc/raddb/dhcp-subconfigs/devstack01/ut/subconfigs_request/4_sim.cfg
including configuration file /etc/raddb/dhcp-subconfigs/devstack01/ut/subconfigs_request/5_ut.cfg
including configuration file /etc/raddb/dhcp-subconfigs/devstack01/ut/subconfigs_request/6_simut.cfg
Including files in directory "/etc/raddb/dhcp-subconfigs/devstack01/ut/subconfigs/"
including configuration file /etc/raddb/dhcp-subconfigs/devstack01/ut/subconfigs/1_biz.cfg
including configuration file /etc/raddb/dhcp-subconfigs/devstack01/ut/subconfigs/2_res.cfg
including configuration file /etc/raddb/dhcp-subconfigs/devstack01/ut/subconfigs/3_vut.cfg
including configuration file /etc/raddb/dhcp-subconfigs/devstack01/ut/subconfigs/4_sim.cfg
including configuration file /etc/raddb/dhcp-subconfigs/devstack01/ut/subconfigs/5_ut.cfg
including configuration file /etc/raddb/dhcp-subconfigs/devstack01/ut/subconfigs/6_simut.cfg
including configuration file /etc/raddb/dhcp-subconfigs/devstack08/ut/main.cfg
including configuration file /etc/raddb/dhcp-subconfigs/devstack10/ut/main.cfg
including configuration file /etc/raddb/dhcp-subconfigs/devstack01/host/main.cfg
including configuration file /etc/raddb/dhcp-subconfigs/devstack08/host/main.cfg
including configuration file /etc/raddb/dhcp-subconfigs/devstack10/host/main.cfg
including configuration file /etc/raddb/dhcp-subconfigs/vasn-stackids-switch.out
Including files in directory "/etc/raddb/dhcp-subconfigs/devstack01/ut/subconfigs/"
CAUGHT SIGNAL: Segmentation fault
Backtrace of last 8 frames:
/usr/lib64/freeradius/libfreeradius-util.so(fr_fault+0x1ae)[0x7f0136607c2e]
/lib64/libpthread.so.0(+0xf5f0)[0x7f0134e595f0]
/lib64/libc.so.6(fgets+0x1b)[0x7f013467396b]
/usr/lib64/freeradius/libfreeradius-server.so(cf_file_read+0x30e)[0x7f0136ccf9de]
/usr/lib64/freeradius/libfreeradius-server.so(main_config_init+0x223)[0x7f0136ce8573]
/usr/sbin/radiusd(main+0x526)[0x4040d6]
/lib64/libc.so.6(__libc_start_main+0xf5)[0x7f0134627505]
/usr/sbin/radiusd[0x404d6d]
No panic action set
_EXIT(139) CALLED src/lib/util/debug.c[920].  Last error was: Invalid attribute reference, missing '&' prefix

Regards,
Nagamani Chinnapaiyan