This bug report will be sent to the XEmacs Development Team, not to your local site managers!! Please write in English, because the XEmacs maintainers do not have translators to read other languages for them. In XEmacs 21.2 "Artemis" [Lucid] (i686-pc-linux) of Wed Feb 10 1999 on pegas configured using `configure --external-widget --debug=yes --error-checking=none' Please describe exactly what actions triggered the bug and the precise symptoms of the bug: Fatal error (11). Your files have been auto-saved. Use `M-x recover-session' to recover them. Please report this bug by running the send-pr script included with XEmacs, or selecting `Send Bug Report' from the help menu. As a last resort send ordinary email to `crashes(a)xemacs.org&#39;. *MAKE SURE* to include the information in the command M-x describe-installation. If at all possible, *please* try to obtain a C stack backtrace; it will help us immensely in determining what went wrong. To do this, locate the core file that was produced as a result of this crash (it's usually called `core' and is located in the directory in which you started the editor, or maybe in your home directory), and type gdb /usr/local/bin/xemacs core ---------------------------------------------------------- #0 0x4027f811 in __kill () #1 0x80a03e1 in fatal_error_signal (sig=6) at emacs.c:264 #2 <signal handler called> #3 0x4027f811 in __kill () #4 0x4028084f in abort () at ../sysdeps/generic/abort.c:83 #5 0x80a202f in assert_failed (file=0x8171ee4 "eval.c", line=1872, expr=0x8171edc "abort()") at emacs.c:2631 #6 0x80a449a in signal_1 (sig=136872548, data=140802532) at eval.c:1872 #7 0x80a4a91 in Fsignal (error_symbol=136872548, data=140802532) at eval.c:2039 #8 0x80912eb in Fcar (list=141566652) at data.c:107 #9 0x80a94ee in Fbacktrace (stream=136984172, detailed=136872408) at eval.c:4816 #10 0x80a03cd in fatal_error_signal (sig=11) at emacs.c:247 #11 <signal handler called> #12 0x807e1de in garbage_collect_1 () at alloc.c:3160 #13 0x80a6681 in Ffuncall (nargs=1, args=0xbfffe9bc) at eval.c:3135 #14 0x80a7389 in run_hook_with_args_in_buffer (buf=0x8876610, nargs=1, args=0xbfffe9bc, cond=RUN_HOOKS_TO_COMPLETION) at eval.c:3671 #15 0x80a73d3 in run_hook_with_args (nargs=1, args=0xbfffe9bc, cond=RUN_HOOKS_TO_COMPLETION) at eval.c:3684 #16 0x80a74da in run_hook (hook=137595688) at eval.c:3539 #17 0x80825e5 in Fkill_buffer (buffer=143091216) at buffer.c:1216 #18 0x80a689c in Ffuncall (nargs=2, args=0xbfffea74) at eval.c:3189 #19 0x8085d38 in execute_optimized_program ( program=0xbfffeac4 "À\tÂ\"«\016\212\tq\210à \210Ä \210)ª\005Å\t!\210Æ\016\a!\210\016\b\026\t\016\n\026\013\016\f\026\r\016\016\026\017\016\020\026\021\016\022\026\021\016\023\026\024\016\025\026\026\016\027\026\030\016\031\026\032\016\e\026\034\016\035\026\036\016\037\026 \016!\026\"\016#\026$À\207\023\b\220Õ\016\b€î$\b\220õ\231\b\002", stack_depth=3, constants_data=0x8681978) at bytecode.c:750 #20 0x8088575 in Fbyte_code (instructions=141406348, constants=141039976, stack_depth=7) at bytecode.c:2398 #21 0x80a6016 in Feval (form=140932320) at eval.c:2986 #22 0x80a32a8 in Fprogn (args=140931888) at eval.c:761 #23 0x80a91dc in unbind_to_hairy (count=0) at eval.c:4625 #24 0x80a9157 in unbind_to (count=0, value=136872380) at eval.c:4600 #25 0x80a3d98 in Fthrow (tag=136947116, val=136872380) at eval.c:1378 #26 0x80a68af in Ffuncall (nargs=3, args=0xbfffed48) at eval.c:3189 #27 0x8085d38 in execute_optimized_program (program=0x81b0fa8 "ÀÁÂ\"\207", stack_depth=3, constants_data=0x81b0f88) at bytecode.c:750 #28 0x808576c in funcall_compiled_function (fun=135991120, nargs=0, args=0xbfffee6c) at bytecode.c:527 ----------------------------------------------------------------------------- Lisp backtrace follows: Fatal error: assertion failed, file eval.c, line 1872, abort()