xemacs 21.1.12 crash

I was quiting gnus and triggered the following assert() Fatal error: assertion failed, file /usr/local/src/xemacs-21.1/src/eval.c, line 1877, abort() Backtrace below. I think it's similar to something I've encountered (and reported) earlier -- XEmacs trying to report a internal error and crashes signaling this. uname -a: Linux barbar.josefsson.org 2.4.0-test5 #2 Fri Aug 4 12:17:40 CEST 2000 i686 unknown ../configure '--with-mule' '--debug' XEmacs 21.1.12 "Channel Islands" configured for `i686-pc-linux'. Where should the build process find the source code? /usr/local/src/xemacs-21.1 What installation prefix should install use? /usr/local What operating system and machine description files should XEmacs use? `s/linux.h' and `m/intel386.h' What compiler should XEmacs be built with? gcc -g -O3 -Wall -Wno-switch Should XEmacs use the GNU version of malloc? yes (Using Doug Lea's new malloc from the GNU C Library.) Should XEmacs use the relocating allocator for buffers? yes What window system should XEmacs use? x11 Where do we find X Windows header files? /usr/X11R6/include Where do we find X Windows libraries? /usr/X11R6/lib Compiling in support for XAUTH. Compiling in support for XPM images. Compiling in support for PNG image handling. Compiling in support for (builtin) GIF image handling. Compiling in support for JPEG image handling. Compiling in support for TIFF image handling. Compiling in native sound support. Compiling in support for Berkeley DB. Compiling in support for LDAP. Compiling in support for ncurses. Compiling in support for GPM (General Purpose Mouse). Compiling in Mule (multi-lingual) support. Compiling in XIM (X11R5+ I18N input method) support. Using raw Xlib to provide XIM support. Compiling in support for proper session-management. Using Lucid menubars. Using Lucid scrollbars. Using Athena dialog boxes. Compiling in DLL support. movemail will use "dot-locking" for locking mail spool files. Using Lisp_Objects with minimal tagbits. Compiling in extra code for debugging. Compiling in code for checking XEmacs memory usage. #0 0x40310d41 in __kill () from /lib/libc.so.6 #1 0x403109b6 in raise (sig=6) at ../sysdeps/posix/raise.c:27 #2 0x403120d8 in abort () at ../sysdeps/generic/abort.c:88 #3 0x80a6833 in assert_failed () at /usr/local/src/xemacs-21.1/src/emacs.c:2627 #4 0x80a7d66 in signal_1 (sig=137158604, data=145228320) at /usr/local/src/xemacs-21.1/src/eval.c:1877 #5 0x80a83bd in Fsignal (error_symbol=137158604, data=145228320) at /usr/local/src/xemacs-21.1/src/eval.c:2044 #6 0x8097a53 in Fcar (list=143789188) at /usr/local/src/xemacs-21.1/src/data.c:105 #7 0x80ac1c8 in Fbacktrace (stream=137267244, detailed=137158464) at /usr/local/src/xemacs-21.1/src/eval.c:4885 #8 0x80a68b9 in fatal_error_signal (sig=6) at /usr/local/src/xemacs-21.1/src/emacs.c:246 #9 0x40310c68 in __restore () at ../sysdeps/unix/sysv/linux/i386/sigaction.c:127 #10 0x403120d8 in abort () at ../sysdeps/generic/abort.c:88 #11 0x80a6833 in assert_failed () at /usr/local/src/xemacs-21.1/src/emacs.c:2627 #12 0x80a7d66 in signal_1 (sig=137158548, data=145228392) at /usr/local/src/xemacs-21.1/src/eval.c:1877 #13 0x80a83bd in Fsignal (error_symbol=137158548, data=145228392) at /usr/local/src/xemacs-21.1/src/eval.c:2044 #14 0x80aca67 in signal_simple_error ( reason=0x81a2640 "Internal error: lstream not open", frob=143987016) at /usr/local/src/xemacs-21.1/src/eval.c:2053 #15 0x811a2f4 in Lstream_write_1 (lstr=0x8951148, data=0x880e568, size=24) at /usr/local/src/xemacs-21.1/src/lstream.c:289 #16 0x811ae91 in Lstream_write (lstr=0x8951148, data=0x880e568, size=24) at /usr/local/src/xemacs-21.1/src/lstream.c:481 #17 0x80cc5cf in encoding_writer (stream=0x893bd18, data=0x880d0c0 "nnimap and Courier imapdenet-rz.(", size=24) at /usr/local/src/xemacs-21.1/src/file-coding.c:2288 #18 0x811a262 in Lstream_flush_out (lstr=0x893bd18) at /usr/local/src/xemacs-21.1/src/lstream.c:343 #19 0x811a656 in Lstream_close (lstr=0x893bd18) at /usr/local/src/xemacs-21.1/src/lstream.c:372 #20 0x811b4d1 in finalize_lstream (header=0x893bd18, for_disksave=0) at /usr/local/src/xemacs-21.1/src/lstream.c:178 #21 0x808036f in sweep_lcrecords_1 (prev=0x829e6f8, used=0xbfffe558) at /usr/local/src/xemacs-21.1/src/alloc.c:3582 #22 0x8081956 in garbage_collect_1 () at /usr/local/src/xemacs-21.1/src/alloc.c:4257 #23 0x80a9974 in funcall_recording_as (recorded_as=137462616, nargs=2, args=0xbfffe894) at /usr/local/src/xemacs-21.1/src/eval.c:3114 #24 0x80adbdd in Ffuncall (nargs=2, args=0xbfffe894) at /usr/local/src/xemacs-21.1/src/eval.c:3238 #25 0x8089b66 in Fbyte_code (bytestr=139622652, vector=141660376, maxdepth=11) at /usr/local/src/xemacs-21.1/src/bytecode.c:416 #26 0x80aa931 in funcall_lambda (fun=141797668, nargs=3, arg_vector=0xbfffeaa8) at /usr/local/src/xemacs-21.1/src/eval.c:3597 #27 0x80a9e1e in funcall_recording_as (recorded_as=141800104, nargs=3, args=0xbfffeaa4) at /usr/local/src/xemacs-21.1/src/eval.c:3214 #28 0x80adbdd in Ffuncall (nargs=4, args=0xbfffeaa4) at /usr/local/src/xemacs-21.1/src/eval.c:3238 #29 0x8089b66 in Fbyte_code (bytestr=139624812, vector=141658264, maxdepth=17) at /usr/local/src/xemacs-21.1/src/bytecode.c:416 #30 0x80aa931 in funcall_lambda (fun=141797724, nargs=3, arg_vector=0xbfffede0) at /usr/local/src/xemacs-21.1/src/eval.c:3597 #31 0x80a9e1e in funcall_recording_as (recorded_as=141800244, nargs=3, args=0xbfffeddc) at /usr/local/src/xemacs-21.1/src/eval.c:3214 #32 0x80adbdd in Ffuncall (nargs=4, args=0xbfffeddc) at /usr/local/src/xemacs-21.1/src/eval.c:3238 #33 0x8089b66 in Fbyte_code (bytestr=139892428, vector=141655720, maxdepth=15) at /usr/local/src/xemacs-21.1/src/bytecode.c:416 #34 0x80aa931 in funcall_lambda (fun=141798536, nargs=0, arg_vector=0xbffff580) at /usr/local/src/xemacs-21.1/src/eval.c:3597 #35 0x80a9e1e in funcall_recording_as (recorded_as=141699900, nargs=0, args=0xbffff57c) at /usr/local/src/xemacs-21.1/src/eval.c:3214 #36 0x80adbdd in Ffuncall (nargs=1, args=0xbffff57c) at /usr/local/src/xemacs-21.1/src/eval.c:3238 #37 0x8089b66 in Fbyte_code (bytestr=140000380, vector=141624696, maxdepth=11) at /usr/local/src/xemacs-21.1/src/bytecode.c:416 #38 0x80aa931 in funcall_lambda (fun=141798592, nargs=0, arg_vector=0xbffff6dc) at /usr/local/src/xemacs-21.1/src/eval.c:3597 #39 0x80a9e1e in funcall_recording_as (recorded_as=141798592, nargs=0, args=0xbffff6d8) at /usr/local/src/xemacs-21.1/src/eval.c:3214 #40 0x80acd3c in apply1 (fn=141798592, arg=137158436) at /usr/local/src/xemacs-21.1/src/eval.c:3238 #41 0x808b0c2 in Fcall_interactively (function=139186616, record_flag=137158436, keys=137158436) at /usr/local/src/xemacs-21.1/src/callint.c:397 #42 0x80a8b18 in Fcommand_execute (cmd=139186616, record=137158436, keys=137158436) at /usr/local/src/xemacs-21.1/src/eval.c:2584 #43 0x80db5c2 in execute_command_event (command_builder=0x833d150, event=139593444) at /usr/local/src/xemacs-21.1/src/event-stream.c:4346 #44 0x80dbc85 in Fdispatch_event (event=139593444) at /usr/local/src/xemacs-21.1/src/event-stream.c:4685 #45 0x8091dea in Fcommand_loop_1 () at /usr/local/src/xemacs-21.1/src/cmdloop.c:579 #46 0x8091faa in command_loop_1 (dummy=137158436) at /usr/local/src/xemacs-21.1/src/cmdloop.c:494 #47 0x80ad8bb in condition_case_1 (handlers=137158548, bfun=0x8091f94 <command_loop_1>, barg=137158436, hfun=0x80918f0 <cmd_error>, harg=137158436) at /usr/local/src/xemacs-21.1/src/eval.c:1653 #48 0x809207e in command_loop_2 (dummy=137158436) at /usr/local/src/xemacs-21.1/src/cmdloop.c:256 #49 0x80ad79f in internal_catch (tag=137233144, func=0x809204c <command_loop_2>, arg=137158436, threw=0x0) at /usr/local/src/xemacs-21.1/src/eval.c:1328 #50 0x8091b2c in initial_command_loop (load_me=137158436) at /usr/local/src/xemacs-21.1/src/cmdloop.c:305 #51 0x80a5581 in xemacs_21_1_12_i686_pc_linux () at /usr/local/src/xemacs-21.1/src/emacs.c:1720 #52 0x80a6bcd in main (argc=1, argv=0xbffffbc4, envp=0xbffffbcc) at /usr/local/src/xemacs-21.1/src/emacs.c:2137