Package: emacs;
Reported by: Kazuhiro Ito <kzhr <at> d1.dion.ne.jp>
Date: Thu, 18 Aug 2011 09:04:02 UTC
Severity: normal
Found in version 23.3.50
Fixed in version 24.0.93
Done: Glenn Morris <rgm <at> gnu.org>
Bug is archived. No further changes may be made.
Message #20 received at 9318 <at> debbugs.gnu.org (full text, mbox):
From: Kazuhiro Ito <kzhr <at> d1.dion.ne.jp> To: Chong Yidong <cyd <at> stupidchicken.com> Cc: 9318 <at> debbugs.gnu.org Subject: Re: bug#9318: 23.3.50; The first call of encode-coding-region() returns wrong result Date: Sun, 21 Aug 2011 09:17:05 +0900
> >> When I start Emacs and evaluate the below code, unexpected result returns.
> >
> >> (let ((func (lambda ()
> >> (with-temp-buffer
> >> (mapc 'insert '(166 25339))
> >> (encode-coding-region (point-min) (point-max) 'ctext-unix)
> >> (buffer-string)))))
> >> (cons (funcall func)
> >> (funcall func)))
> >> -> ("¦拻^@^@^@^@^@^@^@^@^@^@" . "^[$(D\"C^[$(H*f^[(B")
> >
> > I noticed this problem is not Windows specific. I confirmed that it
> > is reproducible in Emacs 23.3.1 (build by pkgsrc) on NetBSD/amd64 via
> > SSH from remote host. But it doesn't occur on openSUSE 11.3.
>
> Could you run Emacs under a debugger, trigger the crash, and provide a
> backtrace? (You will need to have compiled Emacs with debugging
> symbols.)
I built Emacs 23.3 with "-O0 -g" option on NetBSD 5.1 (amd64), and
started with below commad (via SSH).
gdb --args emacs -Q --no-splash
Next, inputtedand below code and evaluated with C-x C-e.
(progn
(goto-char (point-min))
(insert #x80)
(insert (make-string 16 ?A))
(encode-coding-region 1 18 'ctext-unix))
backtrace is below. Please let me know if you need more information.
Program received signal SIGSEGV, Segmentation fault.
0x0000000000557419 in mark_object (arg=4702111234474983745) at alloc.c:5473
5473 if (STRING_MARKED_P (ptr))
(gdb) bt full
#0 0x0000000000557419 in mark_object (arg=4702111234474983745) at alloc.c:5473
ptr = (struct Lisp_String *) 0x4141414141414140
obj = 4702111234474983745
cdr_count = 0
#1 0x0000000000557320 in mark_char_table (ptr=0x1281800) at alloc.c:5405
val = 4702111234474983745
size = 130
i = 0
#2 0x0000000000557315 in mark_char_table (ptr=0x17f6c00) at alloc.c:5402
val = 19404805
size = 34
i = 14
#3 0x0000000000557315 in mark_char_table (ptr=0x13ea700) at alloc.c:5402
val = 25127941
size = 18
i = 6
#4 0x0000000000557315 in mark_char_table (ptr=0x10ba800) at alloc.c:5402
val = 20883205
size = 68
i = 4
#5 0x0000000000557838 in mark_object (arg=17541125) at alloc.c:5567
obj = 17541125
cdr_count = 0
#6 0x0000000000557228 in mark_vectorlike (ptr=0xb16480) at alloc.c:5377
size = 10
i = 9
#7 0x0000000000557855 in mark_object (arg=11625605) at alloc.c:5569
obj = 11625605
cdr_count = 0
#8 0x0000000000557228 in mark_vectorlike (ptr=0xb56000) at alloc.c:5377
size = 434
i = 107
#9 0x0000000000557855 in mark_object (arg=11886597) at alloc.c:5569
obj = 11886597
cdr_count = 0
#10 0x00000000005577b0 in mark_object (arg=10786565) at alloc.c:5562
h = (struct Lisp_Hash_Table *) 0xa49700
obj = 10786565
cdr_count = 0
#11 0x00000000005568ff in Fgarbage_collect () at alloc.c:5092
bind = (struct specbinding *) 0xb96526
catch = (struct catchtag *) 0x7f7fffffc508
handler = (struct handler *) 0x10
stack_top_variable = 0 '\0'
i = 418
message_p = 0
total = {140187732526192, 140187732526008, 140187732526000, 4294967295,
12148454, 10960258, 10312685, 68}
count = 8
t1 = {
tv_sec = 1313842937,
tv_usec = 498976
}
t2 = {
tv_sec = 0,
tv_usec = 140187732530104
}
t3 = {
tv_sec = 11465618,
tv_usec = 0
}
#12 0x0000000000577bb4 in Ffuncall (nargs=2, args=0x7f7fffffc4f0) at eval.c:2965
fun = 10313885
original_fun = 10959186
funcar = 10762338
numargs = 1
lisp_numargs = 10950075
val = 68
backtrace = {
next = 0x7f7fffffc9a0,
function = 0x7f7fffffc4f8,
args = 0x7f7fffffc500,
nargs = 1,
evalargs = 0 '\0',
debug_on_exit = 0 '\0'
}
internal_args = (Lisp_Object *) 0x7f7fffffc500
i = 0
#13 0x00000000005ce3c1 in Fbyte_code (bytestr=9300689, vector=9300725, maxdepth=12)
at bytecode.c:680
count = 7
op = 1
vectorp = (Lisp_Object *) 0x8deb00
bytestr_length = 18
stack = {
pc = 0x96972f ")\207",
top = 0x7f7fffffc4f8,
bottom = 0x7f7fffffc4f0,
byte_string = 9300689,
byte_string_start = 0x96971f "\b\203\b",
constants = 9300725,
next = 0x7f7fffffcb40
}
top = (Lisp_Object *) 0x7f7fffffc4f0
result = 10956883
#14 0x00000000005788cc in funcall_lambda (fun=9300621, nargs=1,
arg_vector=0x7f7fffffca28) at eval.c:3220
val = 10762242
syms_left = 10762242
next = 18577650
count = 6
i = 1
optional = 0
rest = 0
#15 0x000000000057821a in Ffuncall (nargs=2, args=0x7f7fffffca20) at eval.c:3077
fun = 9300621
original_fun = 18577602
funcar = 18577842
numargs = 1
lisp_numargs = 10956963
val = 10762242
backtrace = {
next = 0x7f7fffffced0,
function = 0x7f7fffffca20,
args = 0x7f7fffffca28,
nargs = 1,
evalargs = 0 '\0',
debug_on_exit = 0 '\0'
}
internal_args = (Lisp_Object *) 0xa730a3
i = 0
#16 0x00000000005ce3c1 in Fbyte_code (bytestr=9301185, vector=9301221, maxdepth=12)
at bytecode.c:680
count = 5
op = 1
vectorp = (Lisp_Object *) 0x8decf0
bytestr_length = 31
stack = {
pc = 0x969692 "\v)B\211\034A\n=\204\033",
top = 0x7f7fffffca28,
bottom = 0x7f7fffffca20,
byte_string = 9301185,
byte_string_start = 0x969685 "\b\204\b",
constants = 9301221,
next = 0x0
}
top = (Lisp_Object *) 0x7f7fffffca20
result = 10762242
#17 0x00000000005788cc in funcall_lambda (fun=9301109, nargs=1,
arg_vector=0x7f7fffffcfa8) at eval.c:3220
val = 140187732528832
syms_left = 10762242
next = 18577650
count = 4
i = 1
optional = 0
rest = 0
#18 0x000000000057821a in Ffuncall (nargs=2, args=0x7f7fffffcfa0) at eval.c:3077
fun = 9301109
original_fun = 11438610
funcar = 5059672
numargs = 1
lisp_numargs = 5059670
val = 10762242
backtrace = {
next = 0x7f7fffffd310,
function = 0x7f7fffffcfa0,
args = 0x7f7fffffcfa8,
nargs = 1,
evalargs = 0 '\0',
debug_on_exit = 0 '\0'
}
internal_args = (Lisp_Object *) 0xa77993
i = 0
#19 0x000000000057296b in Fcall_interactively (function=11438610,
record_flag=10762242, keys=10790405) at callint.c:869
val = 4
args = (Lisp_Object *) 0x7f7fffffcfa0
visargs = (Lisp_Object *) 0x7f7fffffcf80
specs = 9301281
filter_specs = 9301281
teml = 5734938
up_event = 10762242
enable = 10762242
speccount = 2
next_event = 2
prefix_arg = 10762242
string = (unsigned char *) 0x7f7fffffcfc0 "P"
tem = (unsigned char *) 0x61652c ""
varies = (int *) 0x7f7fffffcf60
i = 2
j = 1
count = 1
foo = 1
prompt1 = '\0' <repeats 99 times>
tem1 = 0x0
arg_from_tty = 0
gcpro1 = {
next = 0xa43802,
var = 0xa43802,
nvars = 0
}
gcpro2 = {
next = 0xa53bc2,
var = 0xa51c05,
nvars = 10828738
}
gcpro3 = {
next = 0xa55952,
var = 0xa53bc2,
nvars = 2
}
gcpro4 = {
next = 0xa43802,
var = 0xb4a776,
nvars = 2
}
gcpro5 = {
next = 0xa43802,
var = 0xa43802,
nvars = 10836306
}
key_count = 2
record_then_fail = 0
save_this_command = 11438610
save_last_command = 11490098
save_this_original_command = 11438610
save_real_this_command = 11438610
#20 0x0000000000577f70 in Ffuncall (nargs=4, args=0x7f7fffffd3b0) at eval.c:3037
fun = 10312397
original_fun = 10978002
funcar = 4294967297
numargs = 3
lisp_numargs = 10937344
val = 315
backtrace = {
next = 0x0,
function = 0x7f7fffffd3b0,
args = 0x7f7fffffd3b8,
nargs = 3,
evalargs = 0 '\0',
debug_on_exit = 0 '\0'
}
internal_args = (Lisp_Object *) 0x7f7fffffd3b8
i = 0
#21 0x000000000057795d in call3 (fn=10978002, arg1=11438610, arg2=10762242,
arg3=10762242) at eval.c:2857
ret_ungc_val = 9301109
gcpro1 = {
next = 0x8dec75,
var = 0xa43802,
nvars = 4
}
args = {10978002, 11438610, 10762242, 10762242}
#22 0x00000000004e4bca in Fcommand_execute (cmd=11438610, record_flag=10762242,
keys=10762242, special=10762242) at keyboard.c:10562
final = 9301109
tem = 10762242
prefixarg = 10762242
#23 0x00000000004d564d in command_loop_1 () at keyboard.c:1906
cmd = 11438610
lose = 1
keybuf = {96, 20, 8, 0, 140187732530800, 18451712, 1893, 0,
140187732530816, 1983, 18451712, 4294967317, 140187732530800, 6299742, 10656928,
216, 10937344, 7378697632079252736, 140187732530864, 9720, 274877896416,
140187732531032, 0, 140187732530872, 140187732530384, 0, 10762242, 12348018,
8166853, 10762242}
i = 2
prev_modiff = 158
prev_buffer = (struct buffer *) 0xa51c00
already_adjusted = 0
#24 0x0000000000575049 in internal_condition_case (bfun=0x4d3a17 <command_loop_1>,
handlers=10851522, hfun=0x4d34bc <cmd_error>) at eval.c:1492
val = 10762242
c = {
tag = 10762242,
val = 10762242,
next = 0x7f7fffffd880,
gcpro = 0x0,
jmp = {2129, 140187732531264, 140187732541408, 140187698962432, 140187696909296,
3, 140187732531000, 5722036, 0, 140187732531488, 18636288},
backlist = 0x0,
handlerlist = 0x0,
lisp_eval_depth = 0,
pdlcount = 2,
poll_suppress_count = 0,
interrupt_input_blocked = 0,
byte_stack = 0x0
}
h = {
handler = 10851522,
var = 10762242,
chosen_clause = 0,
tag = 0x7f7fffffd790,
next = 0x0
}
#25 0x00000000004d389f in command_loop_2 () at keyboard.c:1362
val = 1
#26 0x0000000000574a0e in internal_catch (tag=10846786,
func=0x4d3885 <command_loop_2>, arg=10762242) at eval.c:1228
c = {
tag = 10846786,
val = 10762242,
next = 0x0,
gcpro = 0x0,
jmp = {2129, 140187732531488, 140187732541408, 140187698962432, 140187696909296,
3, 140187732531288, 5720565, 4301358603, 10820608, 11046651},
backlist = 0x0,
handlerlist = 0x0,
lisp_eval_depth = 0,
pdlcount = 2,
poll_suppress_count = 0,
interrupt_input_blocked = 0,
byte_stack = 0x0
}
#27 0x00000000004d3859 in command_loop () at keyboard.c:1341
No locals.
#28 0x00000000004d3004 in recursive_edit_1 () at keyboard.c:956
count = 1
val = 5059007
#29 0x00000000004d31a6 in Frecursive_edit () at keyboard.c:1018
count = 0
buffer = 10762242
#30 0x00000000004d169a in main (argc=3, argv=0x7f7fffffdb70) at emacs.c:1833
dummy = 140187730444288
stack_bottom_variable = 0 '\0'
do_initial_setlocale = 1
skip_args = 0
rlim = {
rlim_cur = 8720384,
rlim_max = 33554432
}
no_loadup = 0
junk = 0x0
dname_arg = 0x0
Lisp Backtrace:
"eval-last-sexp-1" (0xffffca28)
"eval-last-sexp" (0xffffcfa8)
"call-interactively" (0xffffd3b8)
--
Kazuhiro Ito
GNU bug tracking system
Copyright (C) 1999 Darren O. Benham,
1997,2003 nCipher Corporation Ltd,
1994-97 Ian Jackson.