Re: [Bug: 21.5-b33] assert failed in rep_bytes_by_first_byte_1 -- bogus unicode?

Stephen J. Turnbull writes: Yes, but I'm pretty much now convinced that this is a context-dependent bug. That is, having caught the error in gdb, printed the stuff you asked for (see below) and restarted, when I get to the same group and page of subject lines, no crash. Full backtrace and various poking around wrt ptr follows. Hope it helps! ht ------------- $11 = (const Ibyte *) 0x911ea9c "\377\377\377" $12 = 0x911ea92 "~~~~(PCkk" $13 = 126 '~' $14 = 126 '~' $15 = 0 '\000' $16 = 0x911ea9c "\377\377\377" $17 = 0 '\000' $18 = -1 '\377' #0 fatal_error_signal (sig=6) at emacs.c:3881 #1 <signal handler called> #2 0x000000350be32925 in raise () from /lib64/libc.so.6 #3 0x000000350be34105 in abort () from /lib64/libc.so.6 #4 0x00000000004d3545 in really_abort (file=<value optimized out>, line=<value optimized out>, expr=<value optimized out>) at emacs.c:4796 #5 assert_failed (file=<value optimized out>, line=<value optimized out>, expr=<value optimized out>) at emacs.c:4093 #6 0x0000000000749f10 in rep_bytes_by_first_byte_1 (ptr=0x911ea9c "\377\377\377", len=<value optimized out>) at text.h:195 #7 bytecount_to_charcount_fun (ptr=0x911ea9c "\377\377\377", len=<value optimized out>) at text.c:2300 #8 0x000000000051091b in bytecount_to_charcount (extent=<value optimized out>, endp=<value optimized out>) at text.h:691 #9 string_index_byte_to_char (extent=<value optimized out>, endp=<value optimized out>) at text.h:1158 #10 buffer_or_string_memxpos_to_charxpos (extent=<value optimized out>, endp=<value optimized out>) at buffer.h:767 #11 extent_endpoint_char (extent=<value optimized out>, endp=<value optimized out>) at extents.c:1420 #12 0x000000000051c115 in signal_single_extent_changed (extent=0x336b4d0, property=11690648, old_start=-1, old_end=-1, descendants_too=0) at extents.c:1475 #13 signal_extent_changed (extent=0x336b4d0, property=11690648, old_start=-1, old_end=-1, descendants_too=0) at extents.c:1539 #14 0x000000000069f590 in generate_formatted_string_db (format_str=51044592, result_str=30067368, w=<value optimized out>, dl=0x9123420, db=<value optimized out>, findex=<value optimized out>, min_pixpos=6, max_pixpos=657, type=1) at redisplay.c:3958 #15 0x000000000069fde8 in generate_modeline (w=0x10f5e600, dl=0x9123420, type=1) at redisplay.c:4054 #16 0x00000000006a168d in ensure_modeline_generated (w=0x10f5e600, type=1) at redisplay.c:4605 #17 0x00000000006a215b in regenerate_window (w=0x10f5e600, start_pos=1, point=211, type=1) at redisplay.c:5564 #18 0x00000000006acb05 in redisplay_window (window=284550656, skip_selected=<value optimized out>) at redisplay.c:6435 #19 0x00000000006ae062 in redisplay_windows (window=284550656, skip_selected=1) at redisplay.c:6699 #20 0x00000000006ac118 in redisplay_window (window=284547056, skip_selected=1) at redisplay.c:6316 #21 0x00000000006ae062 in redisplay_windows (window=284547056, skip_selected=1) at redisplay.c:6699 #22 0x00000000006ae1e8 in redisplay_frame (f=0xe346550, preemption_check=<value optimized out>) at redisplay.c:7065 #23 0x00000000006ae695 in redisplay_device (d=0x3698a10, automatic=<value optimized out>) at redisplay.c:7143 #24 0x00000000006aead7 in redisplay_without_hooks () at redisplay.c:7218 #25 redisplay_no_pre_idle_hook () at redisplay.c:7289 #26 0x00000000004f98d5 in Fnext_event (event=164421920, prompt=<value optimized out>) at event-stream.c:2266 #27 0x0000000000495946 in Fcommand_loop_1 () at cmdloop.c:622 #28 0x0000000000495a56 in command_loop_1 (unused_dummy=<value optimized out>) at cmdloop.c:528 #29 0x00000000004dbcb0 in condition_case_1 (handlers=<value optimized out>, bfun=0x495a20 <command_loop_1>, barg=11690648, hfun=0x495c10 <cmd_error>, harg=11690648) at eval.c:2176 #30 0x0000000000495bb0 in command_loop_3 (unused_dummy=<value optimized out>) at cmdloop.c:285 #31 command_loop_2 (unused_dummy=<value optimized out>) at cmdloop.c:298 #32 0x00000000004da949 in internal_catch (tag=Cannot access memory at address 0x1877 ) at eval.c:1756 #33 0x0000000000495e58 in initial_command_loop (load_me=<value optimized out>) at cmdloop.c:336 #34 0x00000000004d5000 in xemacs_21_5_b33_x86_64_unknown_linux (argc=4, argv=0x7fffffffd1d8, unused_envp=<value optimized out>, restart=0) at emacs.c:2742 #35 0x00000000004d5be1 in main (argc=4, argv=0x7fffffffd1d8, unused_envp=<value optimized out>) at emacs.c:3190 -- Henry S. Thompson, School of Informatics, University of Edinburgh 10 Crichton Street, Edinburgh EH8 9AB, SCOTLAND -- (44) 131 650-4440 Fax: (44) 131 650-4587, e-mail: ht(a)inf.ed.ac.uk URL: http://www.ltg.ed.ac.uk/~ht/ [mail from me _always_ has a .sig like this -- mail without it is forged spam] _______________________________________________ XEmacs-Beta mailing list XEmacs-Beta(a)xemacs.org http://lists.xemacs.org/mailman/listinfo/xemacs-beta