(ITS#4110) openldap 2.2.28 crash when running with sql backend

[dcmwai@pl.jaring.my]

Full_Name: Chan Min Wai
Version: 2.2.28
OS: gentoo
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (219.95.246.229)


I'm using openldap 2.2.28 + unixodbc 2.2.11-r1 with postgresql 8.0.3

I'm trying to work using the page showing below.
http://docs.opengroupware.org/Members/mkbrown/Misc/back-sql/back-sql-howto/view
I was trying to put my opengroupware contact on ldap so that other program can
query it.

the 1st time I run everything was fine until the 1st users logout then openldap
will Crash with a segment fault...

bdb_search_candidates: id=0 first=55 last=0
bdb_search: no candidates
send_ldap_result: conn=0 op=4 p=3
*** glibc detected *** double free or corruption (fasttop): 0x08193a68 ***

Program received signal SIGABRT, Aborted.
[Switching to Thread -1235027024 (LWP 1211)]
0xffffe410 in __kernel_vsyscall ()
(gdb) bt
#0  0xffffe410 in __kernel_vsyscall ()
#1  0xb7b7c3a1 in raise () from /lib/tls/libc.so.6
#2  0xb7b7db37 in abort () from /lib/tls/libc.so.6
#3  0xb7baf5fe in __fsetlocking () from /lib/tls/libc.so.6
#4  0xb7bb92c6 in mallopt () from /lib/tls/libc.so.6
#5  0xb7bb7fcd in mallopt () from /lib/tls/libc.so.6
#6  0xb7bb6d3b in free () from /lib/tls/libc.so.6