Lisp backtrace follows:

kill-emacs()
# bind (arg)
save-buffers-kill-emacs(nil)
# bind (command-debug-status)
call-interactively(save-buffers-kill-emacs)
# (condition-case ... . error)
# (catch top-level ...)

=========================================

M-x describe-installation:

uname -a: SunOS trey 5.5.1 Generic_103640-24 sun4u sparc SUNW,Ultra-2

../xemacs-21.4.14/configure '--prefix=/usr/local/packages/xemacs/xemacs-21.4.14' '--site-prefixes=/usr
/local' '--cflags=-O2' '--srcdir=../xemacs-21.4.14' '--x-includes=/usr/openwin/include' '--x-libraries=
/usr/openwin/lib' '--with-pop' '--without-tooltalk' '--without-mule' '--with-file-coding' '--with-dialo
gs=motif' '--with-widgets=motif'

XEmacs 21.4.14 "Reasonable Discussion" configured for `sparc-sun-solaris2.5.1'.

Compilation / Installation:
Source code location:              /auto/usrlocalsrc/xemacs/xemacs-21.4.14/xemacs-21.4.14
Installation prefix:               /usr/local/packages/xemacs/xemacs-21.4.14
Additional prefixes:               /usr/local
Runtime library search path:       /usr/local/lib:/usr/dt/lib:/usr/openwin/lib:/opt/ECSgcc/bin/../lib
/gcc-lib/sparc-sun-solaris2.5.1/3.1.1/../../..:/opt/ECSgcc-3.1.1/lib/gcc-lib/sparc-sun-solaris2.5.1/3.1
.1/../../..
Operating system description file: `s/sol2.h'
Machine description file:          `m/sparc.h'
Compiler:                          /opt/ECSgcc/bin/gcc -O2
Relocating allocator for buffers: yes
GNU version of malloc:             yes

Window System:
Compiling in support for the X window system:
    - X Windows headers location:                 /usr/dt/include /usr/openwin/include
    - X Windows libraries location:               /usr/dt/lib /usr/openwin/lib
    - Handling WM_COMMAND properly.
Compiling in support for Motif.
*WARNING* Many versions of Motif are buggy, requiring workarounds.
             You are likely to experience slow redisplay.
             You may need to install vendor patches to Motif.
             See PROBLEMS for more information.
Using Lucid menubars.
Using Lucid scrollbars.
Using Motif dialog boxes.

Using Motif native widgets.

Images:
Compiling in support for GIF images (builtin).
Compiling in support for XPM images.
Compiling in support for PNG images.
Compiling in support for JPEG images.

Sound:
Compiling in support for sound (native).

Databases:
Compiling in support for DBM.

Internationalization:
Compiling in support for file coding.

Mail:
Compiling in support for POP mail retrieval.
Compiling in support for "dot-locking" mail spool file locking method.

Other Features:
Inhibiting IPv6 canonicalization at startup.
Compiling in support for dynamic shared object modules.

============================================

This GDB was configured as "sparc-sun-solaris2"...
(no debugging symbols found)...

warning: core file may not match specified executable file.
Core was generated by `xemacs ip_rtp.c'.
Program terminated with signal 10, Bus Error.

Stack backtrace:

#0 0xef20a8f0 in _libc_kill () from /usr/lib/libc.so.1
#1 0x880c0 in fatal_error_signal ()
#2 <signal handler called>
#3 0xef6cd92c in RemoveMatchingEntries () from /usr/dt/lib/libXm.so.3
#4 0xef680424 in _XmEnumerateHashTable () from /usr/dt/lib/libXm.so.3
#5 0xef6cda6c in CleanupOnDisplayClose () from /usr/dt/lib/libXm.so.3
#6 0xef4af9a4 in XtCallCallbackList () from /usr/openwin/lib/libXt.so.4
#7 0xef4b8208 in XtPhase2Destroy () from /usr/openwin/lib/libXt.so.4
#8 0xef4b8420 in _XtDoPhase2Destroy () from /usr/openwin/lib/libXt.so.4
#9 0xef4b8630 in XtDestroyWidget () from /usr/openwin/lib/libXt.so.4
#10 0x153b68 in x_delete_device ()
#11 0x7bc4c in delete_device_internal ()
#12 0x755bc in delete_console_internal ()
#13 0x89ce8 in Fkill_emacs ()
#14 0x8fa6c in Ffuncall ()
#15 0x6a980 in execute_optimized_program ()
#16 0x6a4fc in funcall_compiled_function ()
#17 0x8f998 in Ffuncall ()
#18 0x6e55c in Fcall_interactively ()
#19 0x8e834 in Fcommand_execute ()
#20 0xb7e98 in execute_command_event ()
#21 0xb82b0 in Fdispatch_event ()
#22 0x738e8 in Fcommand_loop_1 ()
---Type <return> to continue, or q <return> to quit---
#23 0x8cbd4 in condition_case_1 ()
#24 0x73208 in command_loop_3 ()
#25 0x7322c in command_loop_2 ()
#26 0x8c834 in internal_catch ()
#27 0x733f4 in initial_command_loop ()
#28 0x893b0 in xemacs_21_4_14_sparc_sun_solaris2_5_1 ()
#29 0x89c08 in main ()