gdialog immediately segfaults

["BASS, Ned*" <nbass shl com>]

System:
Linux 2.0.36
Slackware 3.6
gtk+ 1.2
glib 1.2
(imlib ORBit gnome-libs gnome-core gnome-utils) from CVS 990308

Steps to reproduce:
1. run gdialog with any valid arguments

gdb session:
MARGARITA[/home/ned] % gdb gdialog
GNU gdb 4.17
Copyright 1998 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 "i586-slackware-linux"...
(gdb) set args --title test --inputbox test 800 600
(gdb) run
Starting program: /usr/local/bin/gdialog --title test --inputbox test 800
600

Program received signal SIGSEGV, Segmentation fault.
0x404ef044 in free ()
(gdb) bt
#0  0x404ef044 in free ()
#1  0x40376134 in __DTOR_END__ ()
#2  0x74736574 in ?? ()
Cannot access memory at address 0x11.
(gdb) 

Ned