Hallvard suggested that a backtrace might help. This is what I was able to get:

(gdb) bt full #0 0x0fb4fce0 in raise () from /lib/libc.so.6 No symbol table info available. #1 0x0fb51620 in abort () from /lib/libc.so.6 No symbol table info available. #2 0x0fb478dc in __assert_fail () from /lib/libc.so.6 No symbol table info available. #3 0x0ffb459c in ldap_new_connection (ld=0x10016128, srvlist=0x10020278, use_ldsb=0, connect=1, bind=0xff9b4624) at request.c:465 tv = {tv_sec = 0, tv_usec = 100000} res = (LDAPMessage *) 0x10021458 msgid = 530 rc = 0 passwd = {bv_len = 0, bv_val = 0x0} err = 1 savedefconn = (LDAPConn *) 0x10016098 lc = (LDAPConn *) 0x10016310 srv = (LDAPURLDesc *) 0x10020278 __PRETTY_FUNCTION__ = "ldap_new_connection" #4 0x0ffb3c44 in ldap_send_server_request (ld=0x10016128, ber=0x10020338, msgid=529, parentreq=0x100163e0, srvlist=0x10020278, lc=0x0, bind=0xff9b4624) at request.c:206 lr = (LDAPRequest *) 0xffb6cb8 incparent = 1 rc = -6601376 #5 0x0ffb5d34 in ldap_chase_v3referrals (ld=0x10016128, lr=0x100163e0, refs=0x0, sref=1, errstrp=0x100163fc, hadrefp=0xff9b46f4) at request.c:1013 unfollowed = 0x0 unfollowedcnt = 0 origreq = (LDAPRequest *) 0x100163e0 srv = (LDAPURLDesc *) 0x10020278 ber = (BerElement *) 0x10020338 refarray = (char **) 0x10016218 lc = (LDAPConn *) 0x0 rc = 0 count = 0 i = 0 j = 267910176 id = 529 rinfo = {ri_msgid = 528, ri_request = 99, ri_url = 0x100201f0 "ldap://localhost:9016/cn=Somewhere,ou=Meta,dc=example,dc=com??sub"} #6 0x0ff970e0 in try_read1msg (ld=0x10016128, msgid=528, all=1, lcp=0xff9b47e0, result=0xff9b48bc) at result.c:560 tmpber = {ber_opts = {lbo_valid = 2, lbo_options = 1, lbo_debug = 0}, ber_tag = 0, ber_len = 73, ber_usertag = 0, ber_buf = 0x100201a0 "\002\002\002\020sC\004Aldap://localhost:9016/cn=Somewhere,ou=Meta,dc=example,dc=com??sub", ber_ptr = 0x100201e9 "", ber_end = 0x100201e9 "", ber_sos = 0x0, ber_rwptr = 0x0, ber_memctx = 0x0} refs = (char **) 0x10016218 ber = (BerElement *) 0x10020170 newmsg = (LDAPMessage *) 0x100162f0 l = (LDAPMessage *) 0x0 prev = (LDAPMessage *) 0x0 id = 528 tag = 115 len = 67 foundit = 0 lr = (LDAPRequest *) 0x100163e0 tmplr = (LDAPRequest *) 0x0 lc = (LDAPConn *) 0x10016098 tmpber = {ber_opts = {lbo_valid = 4095, lbo_options = 26992, lbo_debug = -6601008}, ber_tag = 4288366336, ber_len = 268140648, ber_usertag = 0, ber_buf = 0xffffffff <Address 0xffffffff out of bounds>, ber_ptr = 0x100170b8 "", ber_end = 0x3 <Address 0x3 out of bounds>, ber_sos = 0x10016128, ber_rwptr = 0x10016238 "", ber_memctx = 0xff9b4730} rc = -2 refer_cnt = 0 hadref = 0 simple_request = 0 lderr = 268396596 tmp = (LDAPMessage *) 0x0 chain_head = (LDAPMessage *) 0x0 moremsgs = 0 isv2 = 0 v3ref = V3REF_TOAPP __PRETTY_FUNCTION__ = "try_read1msg" #7 0x0ff96994 in wait4msg (ld=0x10016128, msgid=528, all=1, timeout=0x0, result=0xff9b48bc) at result.c:344 lc_ready = 0 rc = -2 tv = {tv_sec = 0, tv_usec = 0} tv0 = {tv_sec = 0, tv_usec = 0} tvp = (struct timeval *) 0x0 start_time = 0 tmp_time = -6600704 lc = (LDAPConn *) 0x10016098 __PRETTY_FUNCTION__ = "wait4msg" #8 0x0ff9612c in ldap_result (ld=0x10016128, msgid=528, all=1, timeout=0x0, result=0xff9b48bc) at result.c:124 lm = (LDAPMessage *) 0x0 rc = 268567256 __PRETTY_FUNCTION__ = "ldap_result" #9 0x0ff9a860 in ldap_search_s (ld=0x10016128, base=0x10016048 "o=Example,c=US", scope=2, filter=0x10016060 "cn=Barbara Jensen", attrs=0xff9b48ac, attrsonly=0, res=0xff9b48bc) at search.c:379 msgid = 528 #10 0x100020a0 in do_search (uri=0x0, host=0x10016008 "localhost", port=9013, manager=0x10016018 "cn=Manager,o=Example,c=US", passwd=0x10016038 "secret", sbase=0x10016048 "o=Example,c=US", filter=0x10016060 "cn=Barbara Jensen", maxloop=500, maxretries=20, delay=0) at slapd-search.c:201 ld = (LDAP *) 0x10016128 i = 263 do_retry = 20 attrs = {0x10003dfc "%d).\n", 0x10003e00 "\n", 0x0} pid = 13557 rc = 0 #11 0x10001eac in do_search (uri=0x0, host=0x0, port=19, manager=0xff9b4bd4 "�\233N��\233O\b�\233O\v�\233O\025�\233O\030�\233O\035�\233O �\233O:�\233O=�\233OD�\233OG�\233OJ�\233OM�\233OP�\233OS�\233OU�\233OX�\233Og�\233Oj", passwd=0x22 <Address 0x22 out of bounds>, sbase=0xff9b4bd4 "�\233N��\233O\b�\233O\v�\233O\025�\233O\030�\233O\035�\233O �\233O:�\233O=�\233OD�\233OG�\233OJ�\233OM�\233OP�\233OS�\233OU�\233OX�\233Og�\233Oj", filter=0xff9b4950 "�\233K\200\017�\217`�", maxloop=-134155200, maxretries=-134154560, delay=-134154568) at slapd-search.c:156 ld = (LDAP *) 0x10016038 i = 268525640 do_retry = 268525664 attrs = {0x10016018 "cn=Manager,o=Example,c=US", 0x10016008 "localhost", 0x0} pid = 0 rc = 20 #12 0x0fb38f60 in generic_start_main () from /lib/libc.so.6 No symbol table info available. #13 0x0fb3918c in __libc_start_main () from /lib/libc.so.6 No symbol table info available. #14 0x00000000 in ?? () No symbol table info available.