strange abort with kcheckpass

[Damian Weber]

Hi, all,

I've got a strange SIGABRT issue with kcheckpass.
Of course, kcheckpass is not contained in the base
system, yet I write to this list since the base system 
could be able to help with tracking this down. 
(kcheckpass is called from a screen locker which fails 
to operate properly as a consequence of the SIGABRT.)

Normal behaviour:
(for example with wrong password)
$ kcheckpass
Password:
Authentication failure

Strange behaviour here (called mybox below):
$ kcheckpass
Abort trap: 6

I've recompiled the kcheckpass part of the kdebase3 
port with option -g.
Starting with debugger even doesn't let me reach a 
breakpoint at main(), because the SIGABRT happens
earlier.

# pwd
/usr/ports/x11/kdebase3/work/kdebase-3.5.10/kcheckpass

# ldd ./kcheckpass
./kcheckpass:
        libkdefakes.so.6 => /usr/local/lib/libkdefakes.so.6 (0x68193000)
        libpam.so.4 => /usr/lib/libpam.so.4 (0x68195000)
        libjpeg.so.10 => /usr/local/lib/libjpeg.so.10 (0x6819c000)
        libthr.so.3 => /lib/libthr.so.3 (0x681d0000)
        libc.so.7 => /lib/libc.so.7 (0x68080000)

# gdb ./kcheckpass
GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i386-marcel-freebsd"...
(gdb) b main
Breakpoint 1 at 0x1470: file kcheckpass.c, line 297.
(gdb) r
Starting program: /usr/ports/x11/kdebase3/work/kdebase-3.5.10/kcheckpass/kcheckpass

Program terminated with signal SIGABRT, Aborted.
The program no longer exists.
You can't do that without a process to debug.
(gdb) q

$ uname -a
FreeBSD mybox 7.2-STABLE FreeBSD 7.2-STABLE #18: Mon Dec 14 00:39:13 CET 2009     mybox  i386
$ ls -ld /var/db/pkg/kdebase*
drwxr-xr-x  2 root  wheel  512 Jan 11 18:35 /var/db/pkg/kdebase-3.5.10_4/
drwxr-xr-x  2 root  wheel  512 Jan 11 18:35 /var/db/pkg/kdebase-kompmgr-3.5.10_1/

Any ideas what's the cause or what I should try next to see where this 
abort comes from?

Thanks,

   Damian