Package: emacs;
Reported by: Petteri Hintsanen <petterih <at> iki.fi>
Date: Wed, 1 Mar 2023 03:45:02 UTC
Severity: normal
Found in version 30.0.50
Done: Stefan Kangas <stefankangas <at> gmail.com>
Bug is archived. No further changes may be made.
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bug-gnu-emacs <at> gnu.org:bug#61887; Package emacs.
(Wed, 01 Mar 2023 03:45:02 GMT) Full text and rfc822 format available.Petteri Hintsanen <petterih <at> iki.fi>:bug-gnu-emacs <at> gnu.org.
(Wed, 01 Mar 2023 03:45:02 GMT) Full text and rfc822 format available.Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):
From: Petteri Hintsanen <petterih <at> iki.fi> To: bug-gnu-emacs <at> gnu.org Subject: 30.0.50; Segfault on revert-buffer-with-coding-system Date: Tue, 28 Feb 2023 23:48:18 +0200
Hello,
After editing a binary file in nhexl-mode, calling
revert-buffer-with-coding-system crashed Emacs. This happened initially
on Emacs 28.2, but the current master branch crashes as well.
Please find a recipe below and gdb backtrace.
thanks,
Petteri
Preparation:
- Get nhexl-mode-1.5 from ELPA.
- Create a test file "junk.dat" with:
dd if=/dev/random of=junk.dat bs=1k count=5k
or use any existing large binary file (5 MBs or more).
Recipe:
./gdb --args emacs -Q
In *scratch* buffer, type
(add-to-list 'load-path "~/.emacs.d/elpa/nhexl-mode-1.5")
(require 'nhexl-mode)
M-x eval-buffer
M-x find-file-literally junk.dat
M-x nhexl-mode RET
M-x nhexl-mode RET
C-x RET r utf-8 RET yes RET
GDB output:
Starting program: /home/phintsan/src/emacs/src/emacs -Q
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7ffff0986700 (LWP 250563)]
[New Thread 0x7fffebfff700 (LWP 250564)]
[New Thread 0x7fffea4ce700 (LWP 250565)]
Thread 1 "emacs" received signal SIGSEGV, Segmentation fault.
0x00005555557be729 in balance_an_interval (i=0x55555b47e090) at
intervals.c:390
390 new_diff = i->total_length - i->left->total_length
#0 0x00005555557be729 in balance_an_interval (i=0x55555b47e090)
at intervals.c:390
old_diff = 1
#1 0x00005555557be7c8 in balance_an_interval (i=0x55555b47d980)
at intervals.c:395
old_diff = <optimized out>
#2 0x00005555557be7c8 in balance_an_interval (i=0x55555b47d540)
at intervals.c:395
old_diff = <optimized out>
#3 0x00005555557be7c8 in balance_an_interval (i=0x55555b47d100)
at intervals.c:395
old_diff = <optimized out>
#4 0x00005555557be7c8 in balance_an_interval (i=0x55555b47d008)
at intervals.c:395
old_diff = <optimized out>
#5 0x00005555557be7c8 in balance_an_interval (i=0x55555b477cd0)
at intervals.c:395
old_diff = <optimized out>
#6 0x00005555557be7c8 in balance_an_interval (i=0x55555b475f50)
at intervals.c:395
old_diff = <optimized out>
#7 0x00005555557be7c8 in balance_an_interval (i=0x55555b473c80)
at intervals.c:395
old_diff = <optimized out>
#8 0x00005555557be7c8 in balance_an_interval (i=0x55555b466340)
at intervals.c:395
old_diff = <optimized out>
#9 0x00005555557be7c8 in balance_an_interval (i=0x55555b45d5a0)
at intervals.c:395
old_diff = <optimized out>
#10 0x00005555557be7c8 in balance_an_interval (i=0x55555b4384c0)
at intervals.c:395
old_diff = <optimized out>
#11 0x00005555557be7c8 in balance_an_interval (i=0x55555b3f1150)
at intervals.c:395
old_diff = <optimized out>
#12 0x00005555557be7c8 in balance_an_interval (i=0x55555b32e570)
at intervals.c:395
old_diff = <optimized out>
#13 0x00005555557be7c8 in balance_an_interval (i=0x55555b223ef0)
at intervals.c:395
old_diff = <optimized out>
#14 0x00005555557be7c8 in balance_an_interval (i=0x55555afb8160)
at intervals.c:395
old_diff = <optimized out>
#15 0x00005555557be7c8 in balance_an_interval (i=0x55555abbf160)
at intervals.c:395
old_diff = <optimized out>
#16 0x00005555557be7c8 in balance_an_interval (i=0x55555a619680)
at intervals.c:395
old_diff = <optimized out>
#17 0x00005555557be7c8 in balance_an_interval (i=0x5555595b7758)
at intervals.c:395
old_diff = <optimized out>
#18 0x00005555557be89d in balance_an_interval (i=0x55555b47ded0) at
intervals.c:405
old_diff = <optimized out>
#19 0x00005555557be953 in balance_possible_root_interval
(interval=interval <at> entry=0x55555b47dfb0) at intervals.c:430
parent = <optimized out>
have_parent = false
#20 0x00005555557bfbda in split_interval_right
(interval=interval <at> entry=0x55555b47dfb0, offset=offset <at> entry=-1) at
intervals.c:517
new = 0x55555b47ded0
position = <optimized out>
new_length = <optimized out>
#21 0x00005555557c34d9 in copy_intervals (tree=<optimized out>,
start=start <at> entry=7476, length=length <at> entry=5033991) at intervals.c:2257
i = 0x555558258930
new = 0x555555e81ec8
t = 0x55555b47dfb0
got = 266489
prevlen = -1
#22 0x00005555557c356d in copy_intervals_to_string
(string=string <at> entry=XIL(0x555556866ae4), buffer=<optimized out>,
position=position <at> entry=7476, length=length <at> entry=5033991) at
intervals.c:2272
interval_copy = <optimized out>
#23 0x0000555555754af0 in make_buffer_string_both
(start=start <at> entry=7476, start_byte=start_byte <at> entry=11087,
end=end <at> entry=5041467, end_byte=end_byte <at> entry=7485872,
props=props <at> entry=true) at editfns.c:1629
result = XIL(0x555556866ae4)
tem = <optimized out>
tem1 = <optimized out>
beg0 = 11087
end0 = <optimized out>
beg1 = <optimized out>
end1 = -1
size = 7474785
#24 0x00005555556fdf77 in del_range_2 (from=7476,
from_byte=from_byte <at> entry=11087, to=to <at> entry=5041467,
to_byte=to_byte <at> entry=7485872, ret_string=ret_string <at> entry=false) at
insdel.c:1905
nbytes_del = 7474785
nchars_del = 5033991
deletion = <optimized out>
#25 0x0000555555700908 in del_range_byte
(from_byte=from_byte <at> entry=11087, to_byte=to_byte <at> entry=7485872) at
insdel.c:1826
from = 7476
to = 5041467
#26 0x000055555570e267 in Finsert_file_contents
(filename=XIL(0x555556058384), visit=XIL(0x30), beg=<optimized out>,
end=<optimized out>, replace=XIL(0x30)) at fileio.c:4533
bufpos = <optimized out>
this = 0
decoded = <optimized out>
temp = <optimized out>
same_at_start_charpos = <optimized out>
inserted_chars = <optimized out>
overlap = <optimized out>
conversion_buffer = XIL(0x5555565c8425)
st = {
st_dev = 2081,
st_ino = 31720858,
st_nlink = 1,
st_mode = 33200,
st_uid = 1000,
st_gid = 1000,
__pad0 = 0,
st_rdev = 0,
st_size = 5242880,
st_blksize = 4096,
st_blocks = 10240,
st_atim = {
tv_sec = 1677619312,
tv_nsec = 984772057
},
st_mtim = {
tv_sec = 1677619265,
tv_nsec = 828917393
},
st_ctim = {
tv_sec = 1677619265,
tv_nsec = 828917393
},
__glibc_reserved = {0, 0, 0}
}
mtime = {
tv_sec = 1677619265,
tv_nsec = 828917393
}
fd = <optimized out>
inserted = 7476702
unprocessed = <optimized out>
handler = XIL(0)
val = XIL(0)
insval = <optimized out>
orig_filename = XIL(0x555556058384)
old_undo = XIL(0)
p = XIL(0)
total = 0
regular = <optimized out>
save_errno = 0
read_buf =
"\236/\242k\231Grs\246\237\350\314n;\201\v<ՙ)\300\020g\243?;6s$(F\340\302\323\353\231\306uV4ț\262\330%\313\356\342A\246\345\312Q\024@Ó\213\272\256\027\317\062W\327\265\363\324,\315'>?\375\230N\fq\356\n\033*\207\006\260\232R\201\252Lm\330>G\003\220e\306ձ#\"\264MuI\245\342\263\006Y\314;\334R\253\314)\003\237\303\027˔\nBCAhwS\311\030<\275\037\264?\231:\364Z\303\350K̋}Ч\004^^\222\222\252\264S\226\330\310\306G\316'\360\364\067\376\300\363\276\222\061T\254\277\002s~=~\203\207\237r\266MC98\213\266\262$\260o\373~r\334Z\206\216\271?\262\b"...
coding = {
id = 34,
common_flags = 3072,
mode = 0,
src_multibyte = false,
dst_multibyte = true,
chars_at_source = false,
raw_destination = false,
annotated = false,
eol_seen = 0,
result = CODING_RESULT_SUCCESS,
max_charset_id = 2,
spec = {
iso_2022 = {
flags = 1,
current_invocation = {0, 0},
current_designation = {0, 0, 0, 0},
ctext_extended_segment_len = 0,
single_shifting = false,
bol = false,
embedded_utf_8 = false,
cmp_status = {
state = COMPOSING_NO,
method = COMPOSITION_RELATIVE,
old_form = false,
length = 0,
nchars = 0,
ncomps = 0,
carryover = {0, 0, 0, -1700890880, 688408954, 0, 0,
-28004, 32767, 1441713600, 21845, -28032, 32767, 1447517104, 21845,
-28036, 32767, 1, 0, -147550513, 32767, 0, 0, -26144, 32767, -27904,
32767, -28020, 32767, 0, 0, -147554525, 32767, -26144, 32767,
-146502432, 32767, -26144, 32767, 2, 0, 1, 0, -147548944, 32767, 1, 0,
1447517104, 21845, -28036, 32767, 0, 0, 0, 0, 1447379664, 21845, 0, 0,
0, 0, 1447379664, 21845, 2, -8388608, -8388608, 16777215, 16777215}
}
},
ccl = 0x1,
utf_16 = {
bom = utf_without_bom,
endian = utf_16_big_endian,
surrogate = 0
},
utf_8_bom = utf_without_bom,
emacs_mule = {
cmp_status = {
state = COMPOSING_CHAR,
method = COMPOSITION_RELATIVE,
old_form = false,
length = 0,
nchars = 0,
ncomps = 0,
carryover = {0 <repeats 12 times>, -1700890880,
688408954, 0, 0, -28004, 32767, 1441713600, 21845, -28032, 32767,
1447517104, 21845, -28036, 32767, 1, 0, -147550513, 32767, 0, 0, -26144,
32767, -27904, 32767, -28020, 32767, 0, 0, -147554525, 32767, -26144,
32767, -146502432, 32767, -26144, 32767, 2, 0, 1, 0, -147548944, 32767,
1, 0, 1447517104, 21845, -28036, 32767, 0, 0, 0, 0, 1447379664, 21845, 0, 0}
}
},
undecided = {
inhibit_nbd = 1,
inhibit_ied = 0,
prefer_utf_8 = false
}
},
safe_charsets = 0x7ffff20bfb97 "\377\377",
head_ascii = 0,
detected_utf8_bytes = 5317169512448,
detected_utf8_chars = 1080,
produced = 289,
produced_char = 194,
consumed = 202,
consumed_char = 202,
src_pos = 0,
src_pos_byte = 0,
src_chars = 202,
src_bytes = 202,
src_object = XIL(0),
source = 0x7fffffff93b0
"\236/\242k\231Grs\246\237\350\314n;\201\v<ՙ)\300\020g\243?;6s$(F\340\302\323\353\231\306uV4ț\262\330%\313\356\342A\246\345\312Q\024@Ó\213\272\256\027\317\062W\327\265\363\324,\315'>?\375\230N\fq\356\n\033*\207\006\260\232R\201\252Lm\330>G\003\220e\306ձ#\"\264MuI\245\342\263\006Y\314;\334R\253\314)\003\237\303\027˔\nBCAhwS\311\030<\275\037\264?\231:\364Z\303\350K̋}Ч\004^^\222\222\252\264S\226\330\310\306G\316'\360\364\067\376\300\363\276\222\061T\254\277\002s~=~\203\207\237r\266MC98\213\266\262$\260o\373~r"...,
dst_pos = 5043114,
dst_pos_byte = 7488325,
dst_bytes = 49205,
dst_object = XIL(0x5555565c8425),
destination = 0x7fffe8e11354
"\300\236/\300\242k\300\231Grs\300\246\300\237\301\250\301\214n;\300\201\v<ՙ)\301\200\020g\300\243?;6s$(F\301\240\301\202\301\223\301\253\300\231\301\206uV4ț\300\262\301\230%\301\213\301\256\301\242A\300\246\301\245\301\212Q\024@Ó\300\213\300\272\300\256\027\301\217\062W\327\265\301\263\301\224,\301\215'>?\301\275\300\230N\fq\301\256\n\033*\300\207\006\300\260\300\232R\300\201\300\252Lm\301\230>G\003\300\220e\301\206ձ#\"\300\264MuI\300\245\301\242\300\263\006Y\301\214;\301\234R\300\253\301\214)\003\300\237\301\203\027˔\nBCAhwS\301\211\030<\300\275\037\300\264?\300\231:\301\264Z\301"...,
charbuf = 0x7fffffff89c0,
charbuf_size = 218,
charbuf_used = 194,
carryover = "\236\265\275", '\000' <repeats 19 times>,
"\360?", '\000' <repeats 22 times>,
"\360?\000\000\000\000\000\000\360?\000\000\000\000\000\000\360?",
carryover_bytes = 0,
default_char = 32,
detector = 0x555555643090 <detect_coding_utf_8>,
decoder = 0x55555563c530 <decode_coding_utf_8>,
encoder = 0x555555635b60 <encode_coding_utf_8>
}
replace_handled = <optimized out>
set_coding_system = true
coding_system = XIL(0x115e0)
read_quit = 0
empty_undo_list_p = <optimized out>
we_locked_file = <optimized out>
window_markers = <optimized out>
same_at_start = 11087
same_at_end = 7485872
same_at_end_charpos = 5041467
seekable = <optimized out>
beg_offset = <optimized out>
end_offset = <optimized out>
#27 0x000055555579efc5 in exec_byte_code (fun=<optimized out>,
args_template=<optimized out>, nargs=<optimized out>, args=<optimized
out>) at bytecode.c:809
call_nargs = 5
call_fun = <optimized out>
template = <optimized out>
val = <optimized out>
call_args = 0x7ffff0b6d238
original_fun = XIL(0x9810)
bytecode = <optimized out>
op = 5
type = <optimized out>
targets = {0x5555555a3e69 <exec_byte_code-2076087>,
0x55555579f42b <exec_byte_code+2059>, 0x55555579f426
<exec_byte_code+2054>, 0x55555579f421 <exec_byte_code+2049>,
0x55555579ede2 <exec_byte_code+450>, 0x55555579ede2
<exec_byte_code+450>, 0x55555579f3ed <exec_byte_code+1997>,
0x55555579f3b9 <exec_byte_code+1945>, 0x55555579fb21
<exec_byte_code+3841>, 0x55555579fb1c <exec_byte_code+3836>,
0x55555579fb17 <exec_byte_code+3831>, 0x55555579fb12
<exec_byte_code+3826>, 0x55555579ee11 <exec_byte_code+497>,
0x55555579ee18 <exec_byte_code+504>, 0x55555579fb04
<exec_byte_code+3812>, 0x55555579fa88 <exec_byte_code+3688>,
0x55555579fba8 <exec_byte_code+3976>, 0x55555579fba3
<exec_byte_code+3971>, 0x55555579fb9e <exec_byte_code+3966>,
0x55555579fb99 <exec_byte_code+3961>, 0x55555579ed7a
<exec_byte_code+346>, 0x55555579ed80 <exec_byte_code+352>,
0x55555579fb7d <exec_byte_code+3933>, 0x55555579fb8b
<exec_byte_code+3947>, 0x55555579fb30 <exec_byte_code+3856>,
0x55555579fb2b <exec_byte_code+3851>, 0x55555579fb26
<exec_byte_code+3846>, 0x5555557a00d8 <exec_byte_code+5304>,
0x55555579f014 <exec_byte_code+1012>, 0x55555579f018
<exec_byte_code+1016>, 0x55555579fb43 <exec_byte_code+3875>,
0x55555579fb35 <exec_byte_code+3861>, 0x5555557a00b7
<exec_byte_code+5271>, 0x5555557a00b2 <exec_byte_code+5266>,
0x5555557a00ad <exec_byte_code+5261>, 0x5555557a00a8
<exec_byte_code+5256>, 0x55555579ee75 <exec_byte_code+597>,
0x55555579ee78 <exec_byte_code+600>, 0x5555557a00ca
<exec_byte_code+5290>, 0x5555557a00bc <exec_byte_code+5276>,
0x5555557a0087 <exec_byte_code+5223>, 0x5555557a0082
<exec_byte_code+5218>, 0x5555557a007d <exec_byte_code+5213>,
0x5555557a0078 <exec_byte_code+5208>, 0x55555579f058
<exec_byte_code+1080>, 0x55555579f060 <exec_byte_code+1088>,
0x5555557a009a <exec_byte_code+5242>, 0x5555557a008c
<exec_byte_code+5228>, 0x55555579fd0a <exec_byte_code+4330>,
0x55555579fd37 <exec_byte_code+4375>, 0x55555579fda0
<exec_byte_code+4480>, 0x5555555a3e69 <exec_byte_code-2076087>,
0x5555555a3e69 <exec_byte_code-2076087>, 0x5555555a3e69
<exec_byte_code-2076087>, 0x5555555a3e69 <exec_byte_code-2076087>,
0x5555555a3e69 <exec_byte_code-2076087>, 0x5555557a0f40
<exec_byte_code+8992>, 0x5555557a0ee1 <exec_byte_code+8897>,
0x5555557a0ea5 <exec_byte_code+8837>, 0x5555557a0e69
<exec_byte_code+8777>, 0x5555557a0e2a <exec_byte_code+8714>,
0x55555579fc1b <exec_byte_code+4091>, 0x55555579fbe1
<exec_byte_code+4033>, 0x5555557a0dff <exec_byte_code+8671>,
0x55555579fa96 <exec_byte_code+3702>, 0x55555579fbad
<exec_byte_code+3981>, 0x5555557a0dc5 <exec_byte_code+8613>,
0x5555557a0d9c <exec_byte_code+8572>, 0x5555557a0d62
<exec_byte_code+8514>, 0x5555557a0d2c <exec_byte_code+8460>,
0x5555557a0cf2 <exec_byte_code+8402>, 0x5555557a0c8d
<exec_byte_code+8301>, 0x5555557a0c1e <exec_byte_code+8190>,
0x5555557a0bac <exec_byte_code+8076>, 0x5555557a0b83
<exec_byte_code+8035>, 0x5555557a0b5a <exec_byte_code+7994>,
0x5555557a0b20 <exec_byte_code+7936>, 0x5555557a0ae6
<exec_byte_code+7878>, 0x5555557a0aac <exec_byte_code+7820>,
0x5555557a0a6e <exec_byte_code+7758>, 0x5555557a0a3b
<exec_byte_code+7707>, 0x5555557a0a08 <exec_byte_code+7656>,
0x5555557a09d5 <exec_byte_code+7605>, 0x5555557a0944
<exec_byte_code+7460>, 0x5555557a08ef <exec_byte_code+7375>,
0x5555557a08a4 <exec_byte_code+7300>, 0x5555557a0856
<exec_byte_code+7222>, 0x5555557a0808 <exec_byte_code+7144>,
0x5555557a07ba <exec_byte_code+7066>, 0x5555557a076c
<exec_byte_code+6988>, 0x5555557a071a <exec_byte_code+6906>,
0x5555557a06c4 <exec_byte_code+6820>, 0x5555557a0672
<exec_byte_code+6738>, 0x5555557a0620 <exec_byte_code+6656>,
0x5555557a05ce <exec_byte_code+6574>, 0x5555557a057b
<exec_byte_code+6491>, 0x5555557a049d <exec_byte_code+6269>,
0x55555579f0a2 <exec_byte_code+1154>, 0x5555557a0474
<exec_byte_code+6228>, 0x5555557a0446 <exec_byte_code+6182>,
0x5555557a03c7 <exec_byte_code+6055>, 0x5555557a0384
<exec_byte_code+5988>, 0x5555557a035b <exec_byte_code+5947>,
0x5555557a0330 <exec_byte_code+5904>, 0x5555557a0305
<exec_byte_code+5861>, 0x5555557a02d2 <exec_byte_code+5810>,
0x5555557a02a7 <exec_byte_code+5767>, 0x5555555a3e69
<exec_byte_code-2076087>, 0x5555557a027c <exec_byte_code+5724>,
0x5555557a0251 <exec_byte_code+5681>, 0x5555557a0226
<exec_byte_code+5638>, 0x5555557a01fb <exec_byte_code+5595>,
0x5555557a01d0 <exec_byte_code+5552>, 0x5555557a01a7
<exec_byte_code+5511>, 0x55555579f0a2 <exec_byte_code+1154>,
0x5555555a3e69 <exec_byte_code-2076087>, 0x5555557a0169
<exec_byte_code+5449>, 0x5555557a0140 <exec_byte_code+5408>,
0x5555557a0117 <exec_byte_code+5367>, 0x5555557a00dd
<exec_byte_code+5309>, 0x55555579fa4e <exec_byte_code+3630>,
0x55555579fa25 <exec_byte_code+3589>, 0x55555579f9fc
<exec_byte_code+3548>, 0x55555579f9c2 <exec_byte_code+3490>,
0x55555579f988 <exec_byte_code+3432>, 0x55555579f94e
<exec_byte_code+3374>, 0x55555579f923 <exec_byte_code+3331>,
0x55555579f8fa <exec_byte_code+3290>, 0x5555555a3e69
<exec_byte_code-2076087>, 0x55555579fe91 <exec_byte_code+4721>,
0x5555557a0023 <exec_byte_code+5123>, 0x55555579faca
<exec_byte_code+3754>, 0x55555579ffe9 <exec_byte_code+5065>,
0x55555579ffb2 <exec_byte_code+5010>, 0x55555579ff7b
<exec_byte_code+4955>, 0x55555579fee3 <exec_byte_code+4803>,
0x55555579fec5 <exec_byte_code+4773>, 0x55555579fb51
<exec_byte_code+3889>, 0x55555579fe73 <exec_byte_code+4691>,
0x55555579fe17 <exec_byte_code+4599>, 0x55555579fde9
<exec_byte_code+4553>, 0x55555579fda8 <exec_byte_code+4488>,
0x55555579fcbf <exec_byte_code+4255>, 0x5555557a101e
<exec_byte_code+9214>, 0x5555557a0fdb <exec_byte_code+9147>,
0x5555557a0f84 <exec_byte_code+9060>, 0x5555555a3e69
<exec_byte_code-2076087>, 0x55555579f8bc <exec_byte_code+3228>,
0x55555579f893 <exec_byte_code+3187>, 0x55555579f86a
<exec_byte_code+3146>, 0x55555579f841 <exec_byte_code+3105>,
0x55555579f818 <exec_byte_code+3064>, 0x55555579f7de
<exec_byte_code+3006>, 0x55555579f7a4 <exec_byte_code+2948>,
0x55555579f76a <exec_byte_code+2890>, 0x55555579f730
<exec_byte_code+2832>, 0x55555579f6e5 <exec_byte_code+2757>,
0x55555579f6ab <exec_byte_code+2699>, 0x55555579f671
<exec_byte_code+2641>, 0x55555579f648 <exec_byte_code+2600>,
0x55555579f5ea <exec_byte_code+2506>, 0x55555579f58c
<exec_byte_code+2412>, 0x55555579f559 <exec_byte_code+2361>,
0x55555579f526 <exec_byte_code+2310>, 0x55555579f4f6
<exec_byte_code+2262>, 0x5555557a0529 <exec_byte_code+6409>,
0x5555557a04e0 <exec_byte_code+6336>, 0x55555579f490
<exec_byte_code+2160>, 0x55555579f430 <exec_byte_code+2064>,
0x5555555a3e69 <exec_byte_code-2076087>, 0x5555555a3e69
<exec_byte_code-2076087>, 0x5555555a3e69 <exec_byte_code-2076087>,
0x5555555a3e69 <exec_byte_code-2076087>, 0x5555555a3e69
<exec_byte_code-2076087>, 0x5555555a3e69 <exec_byte_code-2076087>,
0x5555557a0cb6 <exec_byte_code+8342>, 0x5555557a0999
<exec_byte_code+7545>, 0x5555557a040a <exec_byte_code+6122>,
0x55555579f37d <exec_byte_code+1885>, 0x55555579f341
<exec_byte_code+1825>, 0x5555555a3e69 <exec_byte_code-2076087>,
0x5555555a3e69 <exec_byte_code-2076087>, 0x55555579f312
<exec_byte_code+1778>, 0x55555579f2b9 <exec_byte_code+1689>,
0x5555555a3e69 <exec_byte_code-2076087>, 0x5555555a3e69
<exec_byte_code-2076087>, 0x5555555a3e69 <exec_byte_code-2076087>,
0x5555555a3e69 <exec_byte_code-2076087>, 0x5555555a3e69
<exec_byte_code-2076087>, 0x5555555a3e69 <exec_byte_code-2076087>,
0x5555555a3e69 <exec_byte_code-2076087>, 0x5555555a3e69
<exec_byte_code-2076087>, 0x55555579f289 <exec_byte_code+1641> <repeats
64 times>}
quitcounter = 1 '\001'
bc = 0x555555ceae50 <main_thread+496>
top = <optimized out>
pc = <optimized out>
bytestr = <optimized out>
vector = <optimized out>
maxdepth = <optimized out>
bytestr_length = <optimized out>
vectorp = 0x7ffff1842b50
frame_base = <optimized out>
fp = <optimized out>
bytestr_data = <optimized out>
rest = <optimized out>
mandatory = <optimized out>
nonrest = <optimized out>
pushedargs = <optimized out>
result = <optimized out>
#28 0x00005555557596e3 in Ffuncall (nargs=nargs <at> entry=3,
args=args <at> entry=0x7fffffffd508) at eval.c:2997
val = <optimized out>
#29 0x000055555575557f in Ffuncall_interactively (nargs=3,
args=0x7fffffffd508) at callint.c:250
#30 0x00005555557596e3 in Ffuncall (nargs=nargs <at> entry=4,
args=args <at> entry=0x7fffffffd500) at eval.c:2997
val = <optimized out>
#31 0x0000555555756ab3 in Fcall_interactively (function=<optimized out>,
record_flag=<optimized out>, keys=<optimized out>) at callint.c:787
speccount = {
bytes = <optimized out>
}
arg_from_tty = <optimized out>
key_count = <optimized out>
record_then_fail = <optimized out>
save_this_command = <optimized out>
save_this_original_command = <optimized out>
save_real_this_command = <optimized out>
save_last_command = <optimized out>
prefix_arg = <optimized out>
enable = <optimized out>
up_event = <optimized out>
form = <optimized out>
specs = <optimized out>
sa_avail = <optimized out>
string_len = <optimized out>
string = <optimized out>
string_end = <optimized out>
next_event = <optimized out>
nargs = <optimized out>
args = <optimized out>
visargs = <optimized out>
tem = <optimized out>
val = <optimized out>
#32 0x000055555579efc5 in exec_byte_code (fun=<optimized out>,
args_template=<optimized out>, nargs=<optimized out>, args=<optimized
out>) at bytecode.c:809
call_nargs = 3
call_fun = <optimized out>
template = <optimized out>
val = <optimized out>
call_args = 0x7ffff0b6d070
original_fun = XIL(0x2aaa9ba7fe78)
bytecode = <optimized out>
op = 3
type = <optimized out>
targets = {0x5555555a3e69 <exec_byte_code-2076087>,
0x55555579f42b <exec_byte_code+2059>, 0x55555579f426
<exec_byte_code+2054>, 0x55555579f421 <exec_byte_code+2049>,
0x55555579ede2 <exec_byte_code+450>, 0x55555579ede2
<exec_byte_code+450>, 0x55555579f3ed <exec_byte_code+1997>,
0x55555579f3b9 <exec_byte_code+1945>, 0x55555579fb21
<exec_byte_code+3841>, 0x55555579fb1c <exec_byte_code+3836>,
0x55555579fb17 <exec_byte_code+3831>, 0x55555579fb12
<exec_byte_code+3826>, 0x55555579ee11 <exec_byte_code+497>,
0x55555579ee18 <exec_byte_code+504>, 0x55555579fb04
<exec_byte_code+3812>, 0x55555579fa88 <exec_byte_code+3688>,
0x55555579fba8 <exec_byte_code+3976>, 0x55555579fba3
<exec_byte_code+3971>, 0x55555579fb9e <exec_byte_code+3966>,
0x55555579fb99 <exec_byte_code+3961>, 0x55555579ed7a
<exec_byte_code+346>, 0x55555579ed80 <exec_byte_code+352>,
0x55555579fb7d <exec_byte_code+3933>, 0x55555579fb8b
<exec_byte_code+3947>, 0x55555579fb30 <exec_byte_code+3856>,
0x55555579fb2b <exec_byte_code+3851>, 0x55555579fb26
<exec_byte_code+3846>, 0x5555557a00d8 <exec_byte_code+5304>,
0x55555579f014 <exec_byte_code+1012>, 0x55555579f018
<exec_byte_code+1016>, 0x55555579fb43 <exec_byte_code+3875>,
0x55555579fb35 <exec_byte_code+3861>, 0x5555557a00b7
<exec_byte_code+5271>, 0x5555557a00b2 <exec_byte_code+5266>,
0x5555557a00ad <exec_byte_code+5261>, 0x5555557a00a8
<exec_byte_code+5256>, 0x55555579ee75 <exec_byte_code+597>,
0x55555579ee78 <exec_byte_code+600>, 0x5555557a00ca
<exec_byte_code+5290>, 0x5555557a00bc <exec_byte_code+5276>,
0x5555557a0087 <exec_byte_code+5223>, 0x5555557a0082
<exec_byte_code+5218>, 0x5555557a007d <exec_byte_code+5213>,
0x5555557a0078 <exec_byte_code+5208>, 0x55555579f058
<exec_byte_code+1080>, 0x55555579f060 <exec_byte_code+1088>,
0x5555557a009a <exec_byte_code+5242>, 0x5555557a008c
<exec_byte_code+5228>, 0x55555579fd0a <exec_byte_code+4330>,
0x55555579fd37 <exec_byte_code+4375>, 0x55555579fda0
<exec_byte_code+4480>, 0x5555555a3e69 <exec_byte_code-2076087>,
0x5555555a3e69 <exec_byte_code-2076087>, 0x5555555a3e69
<exec_byte_code-2076087>, 0x5555555a3e69 <exec_byte_code-2076087>,
0x5555555a3e69 <exec_byte_code-2076087>, 0x5555557a0f40
<exec_byte_code+8992>, 0x5555557a0ee1 <exec_byte_code+8897>,
0x5555557a0ea5 <exec_byte_code+8837>, 0x5555557a0e69
<exec_byte_code+8777>, 0x5555557a0e2a <exec_byte_code+8714>,
0x55555579fc1b <exec_byte_code+4091>, 0x55555579fbe1
<exec_byte_code+4033>, 0x5555557a0dff <exec_byte_code+8671>,
0x55555579fa96 <exec_byte_code+3702>, 0x55555579fbad
<exec_byte_code+3981>, 0x5555557a0dc5 <exec_byte_code+8613>,
0x5555557a0d9c <exec_byte_code+8572>, 0x5555557a0d62
<exec_byte_code+8514>, 0x5555557a0d2c <exec_byte_code+8460>,
0x5555557a0cf2 <exec_byte_code+8402>, 0x5555557a0c8d
<exec_byte_code+8301>, 0x5555557a0c1e <exec_byte_code+8190>,
0x5555557a0bac <exec_byte_code+8076>, 0x5555557a0b83
<exec_byte_code+8035>, 0x5555557a0b5a <exec_byte_code+7994>,
0x5555557a0b20 <exec_byte_code+7936>, 0x5555557a0ae6
<exec_byte_code+7878>, 0x5555557a0aac <exec_byte_code+7820>,
0x5555557a0a6e <exec_byte_code+7758>, 0x5555557a0a3b
<exec_byte_code+7707>, 0x5555557a0a08 <exec_byte_code+7656>,
0x5555557a09d5 <exec_byte_code+7605>, 0x5555557a0944
<exec_byte_code+7460>, 0x5555557a08ef <exec_byte_code+7375>,
0x5555557a08a4 <exec_byte_code+7300>, 0x5555557a0856
<exec_byte_code+7222>, 0x5555557a0808 <exec_byte_code+7144>,
0x5555557a07ba <exec_byte_code+7066>, 0x5555557a076c
<exec_byte_code+6988>, 0x5555557a071a <exec_byte_code+6906>,
0x5555557a06c4 <exec_byte_code+6820>, 0x5555557a0672
<exec_byte_code+6738>, 0x5555557a0620 <exec_byte_code+6656>,
0x5555557a05ce <exec_byte_code+6574>, 0x5555557a057b
<exec_byte_code+6491>, 0x5555557a049d <exec_byte_code+6269>,
0x55555579f0a2 <exec_byte_code+1154>, 0x5555557a0474
<exec_byte_code+6228>, 0x5555557a0446 <exec_byte_code+6182>,
0x5555557a03c7 <exec_byte_code+6055>, 0x5555557a0384
<exec_byte_code+5988>, 0x5555557a035b <exec_byte_code+5947>,
0x5555557a0330 <exec_byte_code+5904>, 0x5555557a0305
<exec_byte_code+5861>, 0x5555557a02d2 <exec_byte_code+5810>,
0x5555557a02a7 <exec_byte_code+5767>, 0x5555555a3e69
<exec_byte_code-2076087>, 0x5555557a027c <exec_byte_code+5724>,
0x5555557a0251 <exec_byte_code+5681>, 0x5555557a0226
<exec_byte_code+5638>, 0x5555557a01fb <exec_byte_code+5595>,
0x5555557a01d0 <exec_byte_code+5552>, 0x5555557a01a7
<exec_byte_code+5511>, 0x55555579f0a2 <exec_byte_code+1154>,
0x5555555a3e69 <exec_byte_code-2076087>, 0x5555557a0169
<exec_byte_code+5449>, 0x5555557a0140 <exec_byte_code+5408>,
0x5555557a0117 <exec_byte_code+5367>, 0x5555557a00dd
<exec_byte_code+5309>, 0x55555579fa4e <exec_byte_code+3630>,
0x55555579fa25 <exec_byte_code+3589>, 0x55555579f9fc
<exec_byte_code+3548>, 0x55555579f9c2 <exec_byte_code+3490>,
0x55555579f988 <exec_byte_code+3432>, 0x55555579f94e
<exec_byte_code+3374>, 0x55555579f923 <exec_byte_code+3331>,
0x55555579f8fa <exec_byte_code+3290>, 0x5555555a3e69
<exec_byte_code-2076087>, 0x55555579fe91 <exec_byte_code+4721>,
0x5555557a0023 <exec_byte_code+5123>, 0x55555579faca
<exec_byte_code+3754>, 0x55555579ffe9 <exec_byte_code+5065>,
0x55555579ffb2 <exec_byte_code+5010>, 0x55555579ff7b
<exec_byte_code+4955>, 0x55555579fee3 <exec_byte_code+4803>,
0x55555579fec5 <exec_byte_code+4773>, 0x55555579fb51
<exec_byte_code+3889>, 0x55555579fe73 <exec_byte_code+4691>,
0x55555579fe17 <exec_byte_code+4599>, 0x55555579fde9
<exec_byte_code+4553>, 0x55555579fda8 <exec_byte_code+4488>,
0x55555579fcbf <exec_byte_code+4255>, 0x5555557a101e
<exec_byte_code+9214>, 0x5555557a0fdb <exec_byte_code+9147>,
0x5555557a0f84 <exec_byte_code+9060>, 0x5555555a3e69
<exec_byte_code-2076087>, 0x55555579f8bc <exec_byte_code+3228>,
0x55555579f893 <exec_byte_code+3187>, 0x55555579f86a
<exec_byte_code+3146>, 0x55555579f841 <exec_byte_code+3105>,
0x55555579f818 <exec_byte_code+3064>, 0x55555579f7de
<exec_byte_code+3006>, 0x55555579f7a4 <exec_byte_code+2948>,
0x55555579f76a <exec_byte_code+2890>, 0x55555579f730
<exec_byte_code+2832>, 0x55555579f6e5 <exec_byte_code+2757>,
0x55555579f6ab <exec_byte_code+2699>, 0x55555579f671
<exec_byte_code+2641>, 0x55555579f648 <exec_byte_code+2600>,
0x55555579f5ea <exec_byte_code+2506>, 0x55555579f58c
<exec_byte_code+2412>, 0x55555579f559 <exec_byte_code+2361>,
0x55555579f526 <exec_byte_code+2310>, 0x55555579f4f6
<exec_byte_code+2262>, 0x5555557a0529 <exec_byte_code+6409>,
0x5555557a04e0 <exec_byte_code+6336>, 0x55555579f490
<exec_byte_code+2160>, 0x55555579f430 <exec_byte_code+2064>,
0x5555555a3e69 <exec_byte_code-2076087>, 0x5555555a3e69
<exec_byte_code-2076087>, 0x5555555a3e69 <exec_byte_code-2076087>,
0x5555555a3e69 <exec_byte_code-2076087>, 0x5555555a3e69
<exec_byte_code-2076087>, 0x5555555a3e69 <exec_byte_code-2076087>,
0x5555557a0cb6 <exec_byte_code+8342>, 0x5555557a0999
<exec_byte_code+7545>, 0x5555557a040a <exec_byte_code+6122>,
0x55555579f37d <exec_byte_code+1885>, 0x55555579f341
<exec_byte_code+1825>, 0x5555555a3e69 <exec_byte_code-2076087>,
0x5555555a3e69 <exec_byte_code-2076087>, 0x55555579f312
<exec_byte_code+1778>, 0x55555579f2b9 <exec_byte_code+1689>,
0x5555555a3e69 <exec_byte_code-2076087>, 0x5555555a3e69
<exec_byte_code-2076087>, 0x5555555a3e69 <exec_byte_code-2076087>,
0x5555555a3e69 <exec_byte_code-2076087>, 0x5555555a3e69
<exec_byte_code-2076087>, 0x5555555a3e69 <exec_byte_code-2076087>,
0x5555555a3e69 <exec_byte_code-2076087>, 0x5555555a3e69
<exec_byte_code-2076087>, 0x55555579f289 <exec_byte_code+1641> <repeats
64 times>}
quitcounter = 1 '\001'
bc = 0x555555ceae50 <main_thread+496>
top = <optimized out>
pc = <optimized out>
bytestr = <optimized out>
vector = <optimized out>
maxdepth = <optimized out>
bytestr_length = <optimized out>
vectorp = 0x7ffff18b4a80
frame_base = <optimized out>
fp = <optimized out>
bytestr_data = <optimized out>
rest = <optimized out>
mandatory = <optimized out>
nonrest = <optimized out>
pushedargs = <optimized out>
result = <optimized out>
#33 0x00005555557596e3 in Ffuncall (nargs=nargs <at> entry=2,
args=args <at> entry=0x7fffffffd7f0) at eval.c:2997
val = <optimized out>
#34 0x00005555556e1cde in call1 (arg1=<optimized out>, fn=XIL(0x4cb0))
at lisp.h:3247
cmd = XIL(0x7fffffffd7f0)
keybuf = {make_fixnum(24), make_fixnum(13), make_fixnum(114),
XIL(0x80), XIL(0x7ffff1b33395), XIL(0x7fffffffd810), make_fixnum(4),
XIL(0), XIL(0x4000000011000000), XIL(0x555555d74fe0), XIL(0x3),
XIL(0x2aaa9bdbe380), XIL(0x7fffffffd920), XIL(0x55555575cf0d),
XIL(0x3500000014), make_fixnum(133143986203), XIL(0), XIL(0x80), XIL(0),
XIL(0x60), XIL(0), XIL(0x30), XIL(0x7ffff17ea70d), XIL(0x555555821370),
XIL(0x9c00), make_fixnum(23456248587376), XIL(0x7fffffffda58),
XIL(0x7ffff544e299), XIL(0xb), XIL(0x9c00)}
i = <optimized out>
prev_modiff = 123
prev_buffer = 0x5555567a7b58
#35 command_loop_1 () at keyboard.c:1494
cmd = XIL(0x7fffffffd7f0)
keybuf = {make_fixnum(24), make_fixnum(13), make_fixnum(114),
XIL(0x80), XIL(0x7ffff1b33395), XIL(0x7fffffffd810), make_fixnum(4),
XIL(0), XIL(0x4000000011000000), XIL(0x555555d74fe0), XIL(0x3),
XIL(0x2aaa9bdbe380), XIL(0x7fffffffd920), XIL(0x55555575cf0d),
XIL(0x3500000014), make_fixnum(133143986203), XIL(0), XIL(0x80), XIL(0),
XIL(0x60), XIL(0), XIL(0x30), XIL(0x7ffff17ea70d), XIL(0x555555821370),
XIL(0x9c00), make_fixnum(23456248587376), XIL(0x7fffffffda58),
XIL(0x7ffff544e299), XIL(0xb), XIL(0x9c00)}
i = <optimized out>
prev_modiff = 123
prev_buffer = 0x5555567a7b58
#36 0x0000555555757e27 in internal_condition_case
(bfun=bfun <at> entry=0x5555556e18e0 <command_loop_1>,
handlers=handlers <at> entry=XIL(0x90), hfun=hfun <at> entry=0x5555556d4d00
<cmd_error>) at eval.c:1474
val = <optimized out>
c = 0x555555e71eb0
#37 0x00005555556cd9a2 in command_loop_2
(handlers=handlers <at> entry=XIL(0x90)) at keyboard.c:1124
val = <optimized out>
#38 0x0000555555757d81 in internal_catch (tag=tag <at> entry=XIL(0x103e0),
func=func <at> entry=0x5555556cd980 <command_loop_2>,
arg=arg <at> entry=XIL(0x90)) at eval.c:1197
val = <optimized out>
c = 0x555555e71400
#39 0x00005555556cd93e in command_loop () at lisp.h:1164
#40 0x00005555556d48b3 in recursive_edit_1 () at keyboard.c:711
val = <optimized out>
#41 0x00005555556d4c2c in Frecursive_edit () at keyboard.c:794
buffer = <optimized out>
#42 0x00005555555a78b7 in main (argc=<optimized out>, argv=<optimized
out>) at emacs.c:2530
stack_bottom_variable = 0x7ffff5a13660
no_loadup = false
junk = 0x0
dname_arg = 0x0
ch_to_dir = 0x0
original_pwd = <optimized out>
dump_mode = <optimized out>
skip_args = 0
temacs = 0x0
attempt_load_pdump = <optimized out>
only_version = <optimized out>
rlim = {
rlim_cur = 10022912,
rlim_max = 18446744073709551615
}
lc_all = <optimized out>
sockfd = <optimized out>
module_assertions = <optimized out>
Lisp Backtrace:
"insert-file-contents" (0xf0b6d238)
"revert-buffer-insert-file-contents--default-function" (0xf0b6d1d8)
"revert-buffer--default" (0xf0b6d170)
"revert-buffer" (0xf0b6d108)
"revert-buffer-with-coding-system" (0xffffd510)
"funcall-interactively" (0xffffd508)
"call-interactively" (0xf0b6d070)
"command-execute" (0xffffd7f8)
In GNU Emacs 30.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version
3.24.24, cairo version 1.16.0) of 2023-02-28 built on romeo
Repository revision: 68cc286c0495caaebc3f641f6b919109045c43dd
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12011000
System Description: Debian GNU/Linux 11 (bullseye)
Configured features:
CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GSETTINGS HARFBUZZ JPEG JSON
LCMS2 LIBOTF LIBSELINUX LIBXML2 MODULES NOTIFY INOTIFY PDUMPER PNG RSVG
SECCOMP SOUND SQLITE3 THREADS TIFF TOOLKIT_SCROLL_BARS X11 XDBE XIM
XINPUT2 XPM GTK3 ZLIB
Important settings:
value of $LC_MESSAGES: en_US.UTF-8
value of $LANG: fi_FI.UTF-8
locale-coding-system: utf-8-unix
Major mode: Lisp Interaction
Minor modes in effect:
hexl-follow-ascii: t
tooltip-mode: t
global-eldoc-mode: t
eldoc-mode: t
show-paren-mode: t
electric-indent-mode: t
mouse-wheel-mode: t
tool-bar-mode: t
menu-bar-mode: t
file-name-shadow-mode: t
global-font-lock-mode: t
font-lock-mode: t
blink-cursor-mode: t
line-number-mode: t
indent-tabs-mode: t
transient-mark-mode: (only . t)
auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
Load-path shadows:
None found.
Features:
(shadow sort mail-extr emacsbug message mailcap yank-media puny dired
dired-loaddefs rfc822 mml mml-sec password-cache epa derived epg rfc6068
epg-config gnus-util text-property-search mm-decode mm-bodies mm-encode
mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047
rfc2045 ietf-drums mm-util mail-prsvr mail-utils nhexl-mode disp-table
hexl time-date subr-x cl-loaddefs cl-lib rmc iso-transl tooltip cconv
eldoc paren electric uniquify ediff-hook vc-hooks lisp-float-type
elisp-mode mwheel term/x-win x-win term/common-win x-dnd tool-bar dnd
fontset image regexp-opt fringe tabulated-list replace newcomment
text-mode lisp-mode prog-mode register page tab-bar menu-bar rfn-eshadow
isearch easymenu timer select scroll-bar mouse jit-lock font-lock syntax
font-core term/tty-colors frame minibuffer nadvice seq simple cl-generic
indonesian philippine cham georgian utf-8-lang misc-lang vietnamese
tibetan thai tai-viet lao korean japanese eucjp-ms cp51932 hebrew greek
romanian slovak czech european ethiopic indian cyrillic chinese
composite emoji-zwj charscript charprop case-table epa-hook
jka-cmpr-hook help abbrev obarray oclosure cl-preloaded button loaddefs
theme-loaddefs faces cus-face macroexp files window text-properties
overlay sha1 md5 base64 format env code-pages mule custom widget keymap
hashtable-print-readable backquote threads dbusbind inotify lcms2
dynamic-setting system-font-setting font-render-setting cairo
move-toolbar gtk x-toolkit xinput2 x multi-tty make-network-process
emacs)
Memory information:
((conses 16 38619 9018)
(symbols 48 5354 0)
(strings 32 14107 1765)
(string-bytes 1 394418)
(vectors 16 9708)
(vector-slots 8 153658 15727)
(floats 8 34 18)
(intervals 56 224 0)
(buffers 976 10))
bug-gnu-emacs <at> gnu.org:bug#61887; Package emacs.
(Wed, 01 Mar 2023 12:48:01 GMT) Full text and rfc822 format available.Message #8 received at 61887 <at> debbugs.gnu.org (full text, mbox):
From: Eli Zaretskii <eliz <at> gnu.org> To: Petteri Hintsanen <petterih <at> iki.fi>, Stefan Monnier <monnier <at> iro.umontreal.ca> Cc: 61887 <at> debbugs.gnu.org Subject: Re: bug#61887: 30.0.50; Segfault on revert-buffer-with-coding-system Date: Wed, 01 Mar 2023 14:47:07 +0200
> Date: Tue, 28 Feb 2023 23:48:18 +0200 > From: Petteri Hintsanen <petterih <at> iki.fi> > > After editing a binary file in nhexl-mode, calling > revert-buffer-with-coding-system crashed Emacs. This happened initially > on Emacs 28.2, but the current master branch crashes as well. > > Preparation: > > - Get nhexl-mode-1.5 from ELPA. > > - Create a test file "junk.dat" with: > > dd if=/dev/random of=junk.dat bs=1k count=5k > > or use any existing large binary file (5 MBs or more). > > Recipe: > > ./gdb --args emacs -Q > > In *scratch* buffer, type > > (add-to-list 'load-path "~/.emacs.d/elpa/nhexl-mode-1.5") > (require 'nhexl-mode) > > M-x eval-buffer > > M-x find-file-literally junk.dat > > M-x nhexl-mode RET > > M-x nhexl-mode RET > > C-x RET r utf-8 RET yes RET Thank you for your report. Stefan, can you please look into this? It sounds like nhexl-mode leaves an interval tree in the buffer which causes problems when reverting non-literally. (Maybe reverting non-literally after visiting literally, or vice versa, should dispose of all the intervals?)
bug-gnu-emacs <at> gnu.org:bug#61887; Package emacs.
(Fri, 03 Mar 2023 23:20:02 GMT) Full text and rfc822 format available.Message #11 received at 61887 <at> debbugs.gnu.org (full text, mbox):
From: Stefan Monnier <monnier <at> iro.umontreal.ca> To: Petteri Hintsanen <petterih <at> iki.fi> Cc: 61887 <at> debbugs.gnu.org Subject: Re: bug#61887: 30.0.50; Segfault on revert-buffer-with-coding-system Date: Fri, 03 Mar 2023 18:19:47 -0500
> ./gdb --args emacs -Q
>
> In *scratch* buffer, type
> (add-to-list 'load-path "~/.emacs.d/elpa/nhexl-mode-1.5")
> (require 'nhexl-mode)
> M-x eval-buffer
You can directly load ~/.emacs.d/elpa/nhexl-mode-1.5/nhexl-mode.elc
(or ~/.emacs.d/elpa/nhexl-mode-1.5/nhexl-mode-autoloads.el) instead :-)
> M-x find-file-literally junk.dat
>
> M-x nhexl-mode RET
>
> M-x nhexl-mode RET
>
> C-x RET r utf-8 RET yes RET
I tried that and it did not misbehave when I tried it on `emacs.pdmp`,
but I did get a crash when I used it on `src/temacs`.
This said, I got a different backtrace. Yours was:
> Thread 1 "emacs" received signal SIGSEGV, Segmentation fault.
> 0x00005555557be729 in balance_an_interval (i=0x55555b47e090) at
> intervals.c:390
> 390 new_diff = i->total_length - i->left->total_length
> #0 0x00005555557be729 in balance_an_interval (i=0x55555b47e090)
> at intervals.c:390
> old_diff = 1
[...]
> #18 0x00005555557be89d in balance_an_interval (i=0x55555b47ded0) at
> intervals.c:405
> old_diff = <optimized out>
> #19 0x00005555557be953 in balance_possible_root_interval
> (interval=interval <at> entry=0x55555b47dfb0) at intervals.c:430
> parent = <optimized out>
> have_parent = false
> #20 0x00005555557bfbda in split_interval_right
> (interval=interval <at> entry=0x55555b47dfb0, offset=offset <at> entry=-1) at
> intervals.c:517
> new = 0x55555b47ded0
> position = <optimized out>
> new_length = <optimized out>
> #21 0x00005555557c34d9 in copy_intervals (tree=<optimized out>,
> start=start <at> entry=7476, length=length <at> entry=5033991) at intervals.c:2257
> i = 0x555558258930
> new = 0x555555e81ec8
> t = 0x55555b47dfb0
> got = 266489
> prevlen = -1
> #22 0x00005555557c356d in copy_intervals_to_string
> (string=string <at> entry=XIL(0x555556866ae4), buffer=<optimized out>,
> position=position <at> entry=7476, length=length <at> entry=5033991) at
> intervals.c:2272
> interval_copy = <optimized out>
> #23 0x0000555555754af0 in make_buffer_string_both (start=start <at> entry=7476,
> start_byte=start_byte <at> entry=11087, end=end <at> entry=5041467,
> end_byte=end_byte <at> entry=7485872, props=props <at> entry=true) at editfns.c:1629
> result = XIL(0x555556866ae4)
> tem = <optimized out>
> tem1 = <optimized out>
> beg0 = 11087
> end0 = <optimized out>
> beg1 = <optimized out>
> end1 = -1
> size = 7474785
> #24 0x00005555556fdf77 in del_range_2 (from=7476,
> from_byte=from_byte <at> entry=11087, to=to <at> entry=5041467,
> to_byte=to_byte <at> entry=7485872, ret_string=ret_string <at> entry=false) at
> insdel.c:1905
> nbytes_del = 7474785
> nchars_del = 5033991
> deletion = <optimized out>
> #25 0x0000555555700908 in del_range_byte (from_byte=from_byte <at> entry=11087,
> to_byte=to_byte <at> entry=7485872) at insdel.c:1826
> from = 7476
> to = 5041467
> #26 0x000055555570e267 in Finsert_file_contents
> (filename=XIL(0x555556058384), visit=XIL(0x30), beg=<optimized out>,
> end=<optimized out>, replace=XIL(0x30)) at fileio.c:4533
[...]
Mine is:
intervals.c:381: Emacs fatal error: assertion failed: LENGTH (i) > 0
Thread 1 "emacs" hit Breakpoint 1, terminate_due_to_signal (sig=6,
backtrace_limit=2147483647) at emacs.c:426
(gdb) bt
#0 terminate_due_to_signal (sig=6, backtrace_limit=2147483647) at emacs.c:426
#1 0x00005555557c76d0 in die
(msg=msg <at> entry=0x555555952241 "LENGTH (i) > 0", file=file <at> entry=0x5555559520ad "intervals.c", line=line <at> entry=381) at alloc.c:7962
#2 0x000055555589dc99 in balance_an_interval (i=i <at> entry=0x55555d057608) at intervals.c:381
[...]
#26 0x000055555589dda4 in balance_intervals_internal (tree=0x555591eedab0) at intervals.c:451
#27 0x00005555558a0346 in balance_intervals (tree=<optimized out>) at intervals.c:462
#28 0x00005555557c96b6 in sweep_buffers () at alloc.c:7669
#29 0x00005555557cce91 in gc_sweep () at alloc.c:7685
#30 0x00005555557d1ad9 in garbage_collect () at alloc.c:6506
#31 0x00005555557d1cf5 in maybe_garbage_collect () at alloc.c:6350
#32 0x00005555558056ad in maybe_gc () at lisp.h:5617
#33 Ffuncall (nargs=nargs <at> entry=2, args=args <at> entry=0x7fffffffd2a0) at eval.c:2992
#34 0x0000555555778779 in call1 (arg1=Python Exception <class 'gdb.error'> value has been optimized out:
, fn=Python Exception <class 'gdb.error'> value has been optimized out:
) at lisp.h:3247
#35 make_lock_file_name (fn=Python Exception <class 'gdb.error'> value has been optimized out:
, fn <at> entry=XIL(0x555569c01c74)) at filelock.c:656
#36 0x0000555555779602 in unlock_file (fn=Python Exception <class 'gdb.error'> value has been optimized out:
, fn <at> entry=XIL(0x555569c01c74)) at filelock.c:737
#37 0x0000555555803d94 in internal_condition_case_1 (bfun=bfun <at> entry=0x5555557795f4 <unlock_file>, arg=Python Exception <class 'gdb.error'> value has been optimized out:
, arg <at> entry=XIL(0x555569c01c74), handlers=Python Exception <class 'gdb.error'> value has been optimized out:
, hfun=hfun <at> entry=0x55555577862d <unlock_file_handle_error>) at eval.c:1498
#38 0x000055555577881e in Funlock_file (file=Python Exception <class 'gdb.error'> value has been optimized out:
, file <at> entry=XIL(0x555569c01c74)) at filelock.c:811
#39 0x000055555576f00b in Frestore_buffer_modified_p (flag=XIL(0)) at buffer.c:1544
#40 0x000055555576f11a in Fset_buffer_modified_p (flag=Python Exception <class 'gdb.error'> value has been optimized out:
) at buffer.c:1495
#41 0x0000555555773ed2 in Fset_buffer_multibyte (flag=XIL(0x30)) at buffer.c:2908
[...]
Maybe it's because I built with `--enable-checking` so I caught the
problem a bit earlier; inside the call to `set-buffer-multibyte` instead
of inside the subsequent call to `insert-file-contents`.
Clearly the cause of the crash is not in `nhexl-mode`, which is just
a trigger instead.
> Stefan, can you please look into this? It sounds like nhexl-mode
> leaves an interval tree in the buffer which causes problems when
> reverting non-literally. (Maybe reverting non-literally after
> visiting literally, or vice versa, should dispose of all the
> intervals?)
FWIW, in my ideal world, `set-buffer-multibyte` signals an error if the
buffer is not empty :-)
But yes, there's something funny going on in `set_intervals_multibyte_1`.
Stefan
bug-gnu-emacs <at> gnu.org:bug#61887; Package emacs.
(Fri, 03 Mar 2023 23:57:01 GMT) Full text and rfc822 format available.Message #14 received at 61887 <at> debbugs.gnu.org (full text, mbox):
From: Stefan Monnier <monnier <at> iro.umontreal.ca> To: Petteri Hintsanen <petterih <at> iki.fi> Cc: 61887 <at> debbugs.gnu.org Subject: Re: bug#61887: 30.0.50; Segfault on revert-buffer-with-coding-system Date: Fri, 03 Mar 2023 18:56:11 -0500
> But yes, there's something funny going on in `set_intervals_multibyte_1`.
I think I found it: when `total_length` is 0, we call `delete_interval (i)`
but that only deletes the interval represented by the node itself rather
than the whole subtree, so we may end up keeping subtrees of `i`.
Not only that's wrong since `total_length == 0` means there should be
nothing at all, but we don't even recurse on those subtrees so
they keep using the positions of the old mode.
In my case some call `delete_interval (i)` ended up replacing the node
of `total_length == 0` with an old subnode of length 2!
The patch below seems to fix it.
Stefan
diff --git a/src/intervals.c b/src/intervals.c
index 75e37a8c90c..6f6a0c94cf5 100644
--- a/src/intervals.c
+++ b/src/intervals.c
@@ -2333,6 +2333,9 @@ set_intervals_multibyte_1 (INTERVAL i, bool multi_flag,
if (TOTAL_LENGTH (i) == 0)
{
+ /* Delete the whole subtree. */
+ i->left = NULL;
+ i->right = NULL;
delete_interval (i);
return;
}
@@ -2355,7 +2358,8 @@ set_intervals_multibyte_1 (INTERVAL i, bool multi_flag,
left_end_byte = CHAR_TO_BYTE (left_end);
}
- set_intervals_multibyte_1 (i->left, multi_flag, start, start_byte,
+ set_intervals_multibyte_1 (i->left, multi_flag,
+ start, start_byte,
left_end, left_end_byte);
}
if (i->right)
bug-gnu-emacs <at> gnu.org:bug#61887; Package emacs.
(Sat, 04 Mar 2023 00:14:02 GMT) Full text and rfc822 format available.Message #17 received at 61887 <at> debbugs.gnu.org (full text, mbox):
From: Stefan Monnier <monnier <at> iro.umontreal.ca> To: Petteri Hintsanen <petterih <at> iki.fi> Cc: 61887 <at> debbugs.gnu.org Subject: Re: bug#61887: 30.0.50; Segfault on revert-buffer-with-coding-system Date: Fri, 03 Mar 2023 19:13:28 -0500
> The patch below seems to fix it.
I just pushed it to `emacs-29`.
Stefan
bug-gnu-emacs <at> gnu.org:bug#61887; Package emacs.
(Sat, 04 Mar 2023 07:32:01 GMT) Full text and rfc822 format available.Message #20 received at 61887 <at> debbugs.gnu.org (full text, mbox):
From: Eli Zaretskii <eliz <at> gnu.org> To: Stefan Monnier <monnier <at> iro.umontreal.ca> Cc: 61887 <at> debbugs.gnu.org, petterih <at> iki.fi Subject: Re: bug#61887: 30.0.50; Segfault on revert-buffer-with-coding-system Date: Sat, 04 Mar 2023 09:30:40 +0200
> Cc: 61887 <at> debbugs.gnu.org > Date: Fri, 03 Mar 2023 19:13:28 -0500 > From: Stefan Monnier via "Bug reports for GNU Emacs, > the Swiss army knife of text editors" <bug-gnu-emacs <at> gnu.org> > > > The patch below seems to fix it. > > I just pushed it to `emacs-29`. Thanks.
Stefan Kangas <stefankangas <at> gmail.com>:Petteri Hintsanen <petterih <at> iki.fi>:Message #25 received at 61887-done <at> debbugs.gnu.org (full text, mbox):
From: Stefan Kangas <stefankangas <at> gmail.com> To: Eli Zaretskii <eliz <at> gnu.org> Cc: 61887-done <at> debbugs.gnu.org, petterih <at> iki.fi, Stefan Monnier <monnier <at> iro.umontreal.ca> Subject: Re: bug#61887: 30.0.50; Segfault on revert-buffer-with-coding-system Date: Tue, 5 Sep 2023 17:03:04 -0700
Eli Zaretskii <eliz <at> gnu.org> writes: >> Cc: 61887 <at> debbugs.gnu.org >> Date: Fri, 03 Mar 2023 19:13:28 -0500 >> From: Stefan Monnier via "Bug reports for GNU Emacs, >> the Swiss army knife of text editors" <bug-gnu-emacs <at> gnu.org> >> >> > The patch below seems to fix it. >> >> I just pushed it to `emacs-29`. > > Thanks. Closing.
Debbugs Internal Request <help-debbugs <at> gnu.org>
to internal_control <at> debbugs.gnu.org.
(Wed, 04 Oct 2023 11:24:42 GMT) Full text and rfc822 format available.
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