Weird crash in command builder

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 21.1 (patch 3) "Acadia" [Lucid] (sparc-sun-solaris2.5.1) of Wed Sep 29 1999 on bolzano configured using `configure --compiler=/u/scratch/vroonhof/gcc-2.95/bin/gcc' [Note: This 2.95 is a really a gcc 2.95 release candidate so it is suspect] Please describe exactly what actions triggered the bug and the precise symptoms of the bug: I close a gnuserv buffer (I think clicking on the "Done" button) Lisp backtrace is trivial. Here is the C backtrace (gdb) where #0 0xef0f4340 in _kill () #1 0x71508 in fatal_error_signal (sig=10) at /scratch/vroonhof/cvs/xemacs-20/src/emacs.c:263 #2 <signal handler called> #3 0x9c6e8 in command_builder_operate_menu_accelerator (builder=0xdeadbeef) at /scratch/vroonhof/cvs/xemacs-20/src/event-stream.c:3312 #4 0x9d280 in command_builder_find_leaf (builder=0x3a1280, allow_misc_user_events_p=1) at /scratch/vroonhof/cvs/xemacs-20/src/event-stream.c:3733 #5 0x9dee4 in lookup_command_event (command_builder=0x3a1280, event=549774824, allow_misc_user_events_p=1) at /scratch/vroonhof/cvs/xemacs-20/src/event-stream.c:4217 #6 0x9e5e0 in Fdispatch_event (event=549775056) at /scratch/vroonhof/cvs/xemacs-20/src/event-stream.c:4522 #7 0x57de8 in Fcommand_loop_1 () at /scratch/vroonhof/cvs/xemacs-20/src/cmdloop.c:579 #8 0x5801c in command_loop_1 (dummy=-1608015868) at /scratch/vroonhof/cvs/xemacs-20/src/cmdloop.c:494 #9 0x72ee4 in condition_case_1 (handlers=-1608015772, bfun=0x57ff8 <command_loop_1>, barg=-1608015868, hfun=0x58080 <cmd_error>, harg=-1608015868) at /scratch/vroonhof/cvs/xemacs-20/src/eval.c:1653 #10 0x58194 in command_loop_2 (dummy=-1608015868) at /scratch/vroonhof/cvs/xemacs-20/src/cmdloop.c:256 #11 0x7a080 in internal_catch (tag=-1607938220, func=0x58148 <command_loop_2>, arg=-1608015868, threw=0x0) at /scratch/vroonhof/cvs/xemacs-20/src/eval.c:1328 #12 0x578a4 in initial_command_loop (load_me=-1608015868) at /scratch/vroonhof/cvs/xemacs-20/src/cmdloop.c:305 #13 0x6ff58 in sort_args (argc=1487872, argv=0xeffff4d4) at /scratch/vroonhof/cvs/xemacs-20/src/emacs.c:1714 #14 0x716f0 in main (argc=7, argv=0xeffff4d4, envp=0xeffff4f4) at /scratch/vroonhof/cvs/xemacs-20/src/emacs.c:2131 -- Jan Vroonhof http://www.math.ethz.ch/~vroonhof/ Mathematik, vroonhof ＠ math.ethz.ch HG E16, ETH-Zentrum, Tel: +41-1-6325456/25154 Raemistrasse 101, CH-8092 Zuerich. Fax: +41-1-6321085