(ITS#7450) segfault with listener-threads=8

[jackie.qq.zhang@gmail.com]

Full_Name: Jackie Zhang
Version: 2.4.33
OS: Ubuntu 10.04
URL: 
Submission from: (NULL) (2607:f720:1300:1241:9502:8240:b2b5:ba3f)


When I start the server, I saw the following error messages:

50b1ca90 bdb_db_open: warning - no DB_CONFIG file found in directory
/xxx/openldap-2.4.33/var/openldap-data: (2).
Expect poor performance for suffix "dc=xxx,dc=xxx".
50b1ca90 bdb_monitor_db_open: monitoring disabled; configure monitor database to
enable
50b1ca90 slapd starting
Segmentation fault (core dumped)

The default configuration does not have this problem. So I checked every
configuration setting I made and finally found it's caused by the following
setting:

listener-threads 8

Is this a bug?