XEmacs 21.2.33 GC bug?

No lisp backtrace is generated. As always, I cannot reproduce this. (gdb) bt #0 0x40415931 in kill () from /lib/libc.so.6 #1 0x80be0a5 in fatal_error_signal (sig=11) at emacs.c:514 #2 0x40415868 in sigaction () from /lib/libc.so.6 #3 0x814db5b in mark_image_instance (obj=142899072) at glyphs.c:786 #4 0x8087ae0 in mark_object (obj=142899072) at alloc.c:2500 #5 0x808bebc in mark_cons (obj=147179168) at alloc.c:877 #6 0x8087ae0 in mark_object (obj=147179168) at alloc.c:2500 #7 0x80eb11a in mark_widget_value_mapper (val=0x85cda48, closure=0x0) at gui-x.c:70 #8 0x8215887 in lw_map_widget_values (id=65561, mapfunc=0x80eb100 <mark_widget_value_mapper>, closure=0x0) at lwlib.c:446 #9 0x80eb0e7 in mark_popup_data (obj=142900184) at gui-x.c:90 #10 0x8087ae0 in mark_object (obj=147179180) at alloc.c:2500 #11 0x808bebc in mark_cons (obj=147179216) at alloc.c:877 #12 0x8087ae0 in mark_object (obj=147179216) at alloc.c:2500 #13 0x8089213 in garbage_collect_1 () at alloc.c:3449 #14 0x80c57f6 in Ffuncall (nargs=5, args=0xbffff634) at eval.c:3163 #15 0x80c8f8b in call4 (fn=137320860, arg0=137185788, arg1=139970440, arg2=137185788, arg3=137185788) at eval.c:3915 #16 0x818ec2b in clear_echo_area (f=0x857c788, label=137185788, no_restore=0) at minibuf.c:679 #17 0x8110796 in echo_key_event (command_builder=0x85f5fb0, event=149754680) at event-stream.c:632 #18 0x8112b36 in Fnext_event (event=149754680, prompt=137185788) at event-stream.c:2228 #19 0x80a4d4d in Fcommand_loop_1 () at cmdloop.c:570 #20 0x80c2d41 in condition_case_1 (handlers=137185884, bfun=0x80a4fa0 <command_loop_1>, barg=137185788, hfun=0x80a5050 <cmd_error>, harg=137185788) at eval.c:1640 #21 0x80a5164 in command_loop_2 (dummy=137185788) at cmdloop.c:256 #22 0x80c2c0c in internal_catch (tag=137259860, func=0x80a5120 <command_loop_2>, arg=137185788, threw=0x0) at eval.c:1306 #23 0x80a4617 in initial_command_loop (load_me=137185788) at cmdloop.c:305 #24 0x80bf081 in xemacs_21_2_b33_i686_pc_linux () at emacs.c:2147 #25 0x80bf8cf in main () at emacs.c:2576 #26 0x4040fa42 in __libc_start_main () from /lib/libc.so.6 (gdb) bt full #0 0x40415931 in kill () from /lib/libc.so.6 No symbol table info available. #1 0x80be0a5 in fatal_error_signal (sig=11) at emacs.c:514 sig = 11 #2 0x40415868 in sigaction () from /lib/libc.so.6 No symbol table info available. #3 0x814db5b in mark_image_instance (obj=142899072) at glyphs.c:786 obj = 0 #4 0x8087ae0 in mark_object (obj=142899072) at alloc.c:2500 obj = -1073745460 #5 0x808bebc in mark_cons (obj=147179168) at alloc.c:877 obj = 147179168 #6 0x8087ae0 in mark_object (obj=147179168) at alloc.c:2500 obj = -1073745460 #7 0x80eb11a in mark_widget_value_mapper (val=0x85cda48, closure=0x0) at gui-x.c:70 val = (widget_value *) 0x85cda48 #8 0x8215887 in lw_map_widget_values (id=65561, mapfunc=0x80eb100 <mark_widget_value_mapper>, closure=0x0) at lwlib.c:446 id = 3221221836 mapfunc = (int (*)()) 0 closure = (void *) 0x0 info = (widget_info *) 0x0 #9 0x80eb0e7 in mark_popup_data (obj=142900184) at gui-x.c:90 obj = 140302920 #10 0x8087ae0 in mark_object (obj=147179180) at alloc.c:2500 obj = -1073745460 #11 0x808bebc in mark_cons (obj=147179216) at alloc.c:877 obj = 147179216 #12 0x8087ae0 in mark_object (obj=147179216) at alloc.c:2500 obj = -1073745460 #13 0x8089213 in garbage_collect_1 () at alloc.c:3449 speccount = 1 cursor_changed = 1 pre_gc_cursor = 142885208 gcpro1 = {next = 0xbffff654, var = 0xbffff4e0, nvars = 1} frame = 139970440 device = 0 args = {1076133068, 0} args = {138053416, 0} -- Yoshiki Hayashi