Package: emacs;
Reported by: Ken Raeburn <raeburn <at> permabit.com>
Date: Thu, 28 Apr 2016 22:07:01 UTC
Severity: normal
Tags: confirmed
Found in versions 26.1, 25.0.92
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bug-gnu-emacs <at> gnu.org:bug#23397; Package emacs.
(Thu, 28 Apr 2016 22:07:01 GMT) Full text and rfc822 format available.Ken Raeburn <raeburn <at> permabit.com>:bug-gnu-emacs <at> gnu.org.
(Thu, 28 Apr 2016 22:07:02 GMT) Full text and rfc822 format available.Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):
From: Ken Raeburn <raeburn <at> permabit.com> To: bug-gnu-emacs <at> gnu.org Subject: 25.0.92; assertion failure auto-reverting a file being overwritten Date: Thu, 28 Apr 2016 18:05:29 -0400
I'm running the emacs-25 branch as of revision a1f221b, but with commit
d82f24b reverted (attempting to debug #23013), and built with
MARKER_DEBUG enabled (as Eli pointed out, probably not relevant to
#23013) along with assertions.
I was using "git" to update a source tree while about twenty files from
it were loaded into Emacs buffers. Auto-revert was triggered; during the
process, Finsert_file_contents was loading a Perl file when it invoked
BYTE_TO_CHAR:
/* Don't try to reuse the same piece of text twice. */
overlap = (same_at_start - BEGV_BYTE
- (same_at_end
+ (! NILP (end) ? end_offset : st.st_size) - ZV_BYTE));
if (overlap > 0)
same_at_end += overlap;
same_at_end_charpos = BYTE_TO_CHAR (same_at_end);
...with same_at_end well out of range (Z_BYTE=12451, same_at_end=24673).
The reverting appears to have happened while the file was in the process
of being updated, as st.st_size is zero.
The "end" argument is nil, so the conditional expression will use the
st_size value (zero). So with same_at_start=12223, BEGV_BYTE=1, and
ZV_BYTE=12451, the "overlap" value will be 24673 minus the (old) value
of same_at_end. If that difference doesn't go negative, we'll set
same_at_end to 24673, which is the value seen in the next frame down.
(The "overlap" variable isn't visible from gdb at this point.)
So in buf_bytepos_to_charpos, the initial range check assertion fails,
and Emacs dies.
I haven't managed to reproduce this so far.
Core was generated by `emacs --daemon'.
Program terminated with signal 6, Aborted.
#0 0x00007f6725308b7b in raise (sig=<optimized out>) at ../nptl/sysdeps/unix/sysv/linux/pt-raise.c:42
42 ../nptl/sysdeps/unix/sysv/linux/pt-raise.c: No such file or directory.
SIGINT is used by the debugger.
Are you sure you want to change it? (y or n) [answered Y; input not from terminal]
DISPLAY = :0.0
TERM = dumb
Breakpoint 1 at 0x52d290: file ../../src/emacs.c, line 352.
Temporary breakpoint 2 at 0x54d950: file ../../src/sysdep.c, line 911.
(gdb) bt full
#0 0x00007f6725308b7b in raise (sig=<optimized out>) at ../nptl/sysdeps/unix/sysv/linux/pt-raise.c:42
resultvar = 0
pid = <optimized out>
#1 0x000000000052d308 in terminate_due_to_signal (sig=6, backtrace_limit=2147483647) at ../../src/emacs.c:380
No locals.
#2 0x00000000005995e4 in die (msg=<optimized out>, file=<optimized out>, line=<optimized out>) at ../../src/alloc.c:7218
No locals.
#3 0x0000000000562b46 in buf_bytepos_to_charpos (b=0x3940870, bytepos=24673) at ../../src/marker.c:297
tail = <optimized out>
best_above = <optimized out>
best_above_byte = <optimized out>
best_below = <optimized out>
best_below_byte = <optimized out>
#4 0x000000000056c786 in Finsert_file_contents (filename=59999236, visit=<optimized out>, beg=0, end=0, replace=<optimized out>) at ../../src/fileio.c:3853
temp = <optimized out>
overlap = <optimized out>
giveup_match_end = false
st = {
st_dev = 2057,
st_ino = 5972083,
st_nlink = 1,
st_mode = 33188,
st_uid = 1065,
st_gid = 50,
__pad0 = 0,
st_rdev = 0,
st_size = 0,
st_blksize = 4096,
st_blocks = 8,
st_atim = {
tv_sec = 1461804924,
tv_nsec = 0
},
st_mtim = {
tv_sec = 1461804924,
tv_nsec = 0
},
st_ctim = {
tv_sec = 1461804924,
tv_nsec = 0
},
__unused = {0, 0, 0}
}
mtime = {
tv_sec = 1461804924,
tv_nsec = 0
}
fd = 20
inserted = 0
how_much = <optimized out>
beg_offset = 0
end_offset = <optimized out>
unprocessed = <optimized out>
handler = 0
val = <optimized out>
insval = <optimized out>
orig_filename = 59999236
old_undo = <optimized out>
p = <optimized out>
total = 0
not_regular = <optimized out>
save_errno = 0
read_buf = [text elided]...
coding = {
id = 1,
common_flags = 4096,
mode = 0,
src_multibyte = false,
dst_multibyte = false,
chars_at_source = false,
raw_destination = false,
annotated = true,
eol_seen = 3,
result = CODING_RESULT_SUCCESS,
max_charset_id = 0,
spec = {
iso_2022 = {
flags = 0,
current_invocation = {0, 59159552},
current_designation = {0, 0, 0, 16},
ctext_extended_segment_len = 0,
single_shifting = false,
bol = true,
embedded_utf_8 = false,
cmp_status = {
state = COMPOSING_NO,
method = 59159773,
old_form = false,
length = 117,
nchars = 0,
ncomps = 0,
carryover = {0, 137897158, 0, 0, 0, 53, 0, 0, 0, 1, 0, 59159720, 0, 13184, 0 <repeats 11 times>, 137897156, 0, 1, 0, 0, 1, 1633000192, 821086785, 13263192, 0, 0, 0, 0, 0, 13263192, 0, 47, 0, 47, 0, 0, 0, 5836564, 0, 0, 0, 53, 0, 13263096, 0, 0, 0, 1, 0, 0, 0, 13263128, 0, 0, 0, 53, 0, 15698672}
}
},
ccl = 0x0,
utf_16 = {
bom = utf_detect_bom,
endian = utf_16_big_endian,
surrogate = 59159552
},
utf_8_bom = utf_detect_bom,
emacs_mule = {
cmp_status = {
state = COMPOSING_NO,
method = COMPOSITION_RELATIVE,
old_form = false,
length = 0,
nchars = 0,
ncomps = 0,
carryover = {16, 0, 2, 0, 59159773, 0, 117, 0, 0, 0, 137897158, 0, 0, 0, 53, 0, 0, 0, 1, 0, 59159720, 0, 13184, 0 <repeats 11 times>, 137897156, 0, 1, 0, 0, 1, 1633000192, 821086785, 13263192, 0, 0, 0, 0, 0, 13263192, 0, 47, 0, 47, 0, 0, 0, 5836564, 0, 0, 0, 53, 0, 13263096, 0, 0, 0, 1, 0}
}
},
undecided = {
inhibit_nbd = 0,
inhibit_ied = 0,
prefer_utf_8 = false
}
},
safe_charsets = 0xcf1980 "",
head_ascii = 6017289,
detected_utf8_bytes = 53,
detected_utf8_chars = 140724539966056,
produced = 1,
produced_char = 6011538,
consumed = 13258416,
consumed_char = 6072415,
src_pos = 13263096,
src_pos_byte = 4,
src_chars = 22,
src_bytes = 140724539966056,
src_object = 0,
source = 0xffffffffffffffff <Address 0xffffffffffffffff out of bounds>,
dst_pos = 59999236,
dst_pos_byte = 5840580,
dst_bytes = 53,
dst_object = 0,
destination = 0x35 <Address 0x35 out of bounds>,
charbuf = 0xffffffffffffffff,
charbuf_size = 59999236,
charbuf_used = 0,
carryover = "\000\000\000\000\000\000\000\000\004\204\223\003\000\000\000\000p\b\224\003\000\000\000\000\020\000\000\000\000\000\000\000\240\252", '\000' <repeats 14 times>"\372, \300[\000\000\000\000\000\240\252\000\000\000\000\000",
carryover_bytes = 0,
default_char = 0,
detector = 0,
decoder = 0x4ace70 <decode_coding_raw_text>,
encoder = 0x4bdac0 <encode_coding_raw_text>
}
replace_handled = false
set_coding_system = true
coding_system = 186272
read_quit = false
empty_undo_list_p = false
old_Vdeactivate_mark = 44448
we_locked_file = false
window_markers = <optimized out>
same_at_start = 12223
same_at_end = 24673
same_at_end_charpos = 12451
#5 0x00000000005bbd7c in Ffuncall (nargs=6, args=0x7ffcfc374398) at ../../src/eval.c:2709
internal_argbuf = {13730768, 0, 1, 4440414, 53, 5928744, 292928, 292928}
fun = <optimized out>
original_fun = <optimized out>
funcar = 0
numargs = 5
lisp_numargs = 6
val = <optimized out>
internal_args = 0x7ffcfc3743a0
count = 24
#6 0x00000000005fcaad in exec_byte_code (bytestr=2305, vector=6, maxdepth=6, args_template=0, nargs=2, args=0x400448) at ../../src/bytecode.c:880
targets = {0x5fc882, 0x5fd1e5, 0x5fd1ea, 0x5fd1ef, 0x5fd1f5, 0x5fc8e3, 0x5fcedf, 0x5fcf25, 0x5fced5, 0x5fceda, 0x5fcea6, 0x5fceab, 0x5fc924, 0x5fc928, 0x5fcc6f, 0x5fceb0, 0x5fce3a, 0x5fce3f, 0x5fcbe9, 0x5fcbee, 0x5fc9b5, 0x5fc9b8, 0x5fcc18, 0x5fcbf3, 0x5fcbba, 0x5fcbbf, 0x5fcbc4, 0x5fcbc9, 0x5fca49, 0x5fca50, 0x5fcc5b, 0x5fcb95, 0x5fcb80, 0x5fcb85, 0x5fcb8a, 0x5fdf7e, 0x5fca8f, 0x5fca90, 0x5fcbd5, 0x5fcb5b, 0x5fe45a, 0x5fe45f, 0x5fe464, 0x5fe430, 0x5fcad0, 0x5fcad0, 0x5fe3d6, 0x5fe435, 0x5fe291, 0x5fe287, 0x5fe1c7, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5ff150, 0x5ff0a2, 0x5ff0f9, 0x5fef22, 0x5fef79, 0x5fce44, 0x5fcd89, 0x5feff8, 0x5fcd18, 0x5fcdc9, 0x5ff062, 0x5feafc, 0x5ff335, 0x5ff2bb, 0x5ff2f8, 0x5ff28c, 0x5ff375, 0x5ff3b5, 0x5fe967, 0x5feef3, 0x5fee73, 0x5feeb3, 0x5fed72, 0x5fedb2, 0x5fedf9, 0x5fee36, 0x5feb2b, 0x5febb8, 0x5febf8, 0x5fec3c, 0x5fece8, 0x5feca3, 0x5fed2d, 0x5fd7b3, 0x5fd7f8, 0x5fd835, 0x5fd874, 0x5fd8b1, 0x5fd8ee, 0x5fd92b, 0x5fd9e5, 0x5fcb2d, 0x5fda46, 0x5fda75, 0x5fdaf3, 0x5fdb58, 0x5fdbb9, 0x5fdbe8, 0x5fdc19, 0x5fdc4a, 0x5fdca2, 0x5fc882, 0x5fdcf2, 0x5fdd27, 0x5fdd5c, 0x5fdd91, 0x5fddc6, 0x5fddfb, 0x5fcb2d, 0x5fc882, 0x5fde2a, 0x5fde71, 0x5fdea0, 0x5fdecf, 0x5fdf0f, 0x5fdf4f, 0x5fd423, 0x5fd470, 0x5fd691, 0x5fd6d1, 0x5fd65c, 0x5fd784, 0x5fc882, 0x5fe100, 0x5fe469, 0x5fcc83, 0x5fe52c, 0x5fe7db, 0x5fe86d, 0x5fe091, 0x5fe0df, 0x5fcc2c, 0x5fdf83, 0x5fd0a4, 0x5fe154, 0x5fe182, 0x5fe2bf, 0x5fe32c, 0x5fe373, 0x5fe760, 0x5fe3ea, 0x5fd711, 0x5fd755, 0x5fd4b0, 0x5fd4df, 0x5fd50e, 0x5fd53d, 0x5fd57d, 0x5fd5bd, 0x5fd5fd, 0x5fd63d, 0x5fd205, 0x5fd245, 0x5fd285, 0x5fd2b4, 0x5fd2f4, 0x5fd334, 0x5fd38d, 0x5fd3e6, 0x5fd968, 0x5fd9a5, 0x5fd126, 0x5fd18e, 0x5fc882, 0x5fe62a, 0x5fe6da, 0x5fe996, 0x5fea77, 0x5fdfb1, 0x5ff23c, 0x5feb68, 0x5fdaa6, 0x5fcf81, 0x5fcfc6, 0x5fc882, 0x5fc882, 0x5fd01e, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fd069 <repeats 64 times>}
count = 22
stack = {
pc = 0xc184d9 ")\202y",
byte_string = 9710972,
byte_string_start = 0xc1846c "\306\002!\204\023",
next = 0x7ffcfc3745f0
}
result = 0
type = 2305
#7 0x00000000005bba72 in Ffuncall (nargs=3, args=0x7ffcfc374568) at ../../src/eval.c:2754
fun = <optimized out>
original_fun = 4554608
funcar = 0
numargs = 2
lisp_numargs = 6
val = <optimized out>
internal_args = <optimized out>
count = 21
#8 0x00000000005fcaad in exec_byte_code (bytestr=2305, vector=3, maxdepth=6, args_template=0, nargs=2, args=0x400448) at ../../src/bytecode.c:880
targets = {0x5fc882, 0x5fd1e5, 0x5fd1ea, 0x5fd1ef, 0x5fd1f5, 0x5fc8e3, 0x5fcedf, 0x5fcf25, 0x5fced5, 0x5fceda, 0x5fcea6, 0x5fceab, 0x5fc924, 0x5fc928, 0x5fcc6f, 0x5fceb0, 0x5fce3a, 0x5fce3f, 0x5fcbe9, 0x5fcbee, 0x5fc9b5, 0x5fc9b8, 0x5fcc18, 0x5fcbf3, 0x5fcbba, 0x5fcbbf, 0x5fcbc4, 0x5fcbc9, 0x5fca49, 0x5fca50, 0x5fcc5b, 0x5fcb95, 0x5fcb80, 0x5fcb85, 0x5fcb8a, 0x5fdf7e, 0x5fca8f, 0x5fca90, 0x5fcbd5, 0x5fcb5b, 0x5fe45a, 0x5fe45f, 0x5fe464, 0x5fe430, 0x5fcad0, 0x5fcad0, 0x5fe3d6, 0x5fe435, 0x5fe291, 0x5fe287, 0x5fe1c7, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5ff150, 0x5ff0a2, 0x5ff0f9, 0x5fef22, 0x5fef79, 0x5fce44, 0x5fcd89, 0x5feff8, 0x5fcd18, 0x5fcdc9, 0x5ff062, 0x5feafc, 0x5ff335, 0x5ff2bb, 0x5ff2f8, 0x5ff28c, 0x5ff375, 0x5ff3b5, 0x5fe967, 0x5feef3, 0x5fee73, 0x5feeb3, 0x5fed72, 0x5fedb2, 0x5fedf9, 0x5fee36, 0x5feb2b, 0x5febb8, 0x5febf8, 0x5fec3c, 0x5fece8, 0x5feca3, 0x5fed2d, 0x5fd7b3, 0x5fd7f8, 0x5fd835, 0x5fd874, 0x5fd8b1, 0x5fd8ee, 0x5fd92b, 0x5fd9e5, 0x5fcb2d, 0x5fda46, 0x5fda75, 0x5fdaf3, 0x5fdb58, 0x5fdbb9, 0x5fdbe8, 0x5fdc19, 0x5fdc4a, 0x5fdca2, 0x5fc882, 0x5fdcf2, 0x5fdd27, 0x5fdd5c, 0x5fdd91, 0x5fddc6, 0x5fddfb, 0x5fcb2d, 0x5fc882, 0x5fde2a, 0x5fde71, 0x5fdea0, 0x5fdecf, 0x5fdf0f, 0x5fdf4f, 0x5fd423, 0x5fd470, 0x5fd691, 0x5fd6d1, 0x5fd65c, 0x5fd784, 0x5fc882, 0x5fe100, 0x5fe469, 0x5fcc83, 0x5fe52c, 0x5fe7db, 0x5fe86d, 0x5fe091, 0x5fe0df, 0x5fcc2c, 0x5fdf83, 0x5fd0a4, 0x5fe154, 0x5fe182, 0x5fe2bf, 0x5fe32c, 0x5fe373, 0x5fe760, 0x5fe3ea, 0x5fd711, 0x5fd755, 0x5fd4b0, 0x5fd4df, 0x5fd50e, 0x5fd53d, 0x5fd57d, 0x5fd5bd, 0x5fd5fd, 0x5fd63d, 0x5fd205, 0x5fd245, 0x5fd285, 0x5fd2b4, 0x5fd2f4, 0x5fd334, 0x5fd38d, 0x5fd3e6, 0x5fd968, 0x5fd9a5, 0x5fd126, 0x5fd18e, 0x5fc882, 0x5fe62a, 0x5fe6da, 0x5fe996, 0x5fea77, 0x5fdfb1, 0x5ff23c, 0x5feb68, 0x5fdaa6, 0x5fcf81, 0x5fcfc6, 0x5fc882, 0x5fc882, 0x5fd01e, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fd069 <repeats 64 times>}
count = 19
stack = {
pc = 0xc1860b "\210\334\335\t!!\026$\336\330\211\321\330\016%%\210\337\340\003\"\210\211\203\263",
byte_string = 9710484,
byte_string_start = 0xc1857c "r\306p!\206\b",
next = 0x7ffcfc374790
}
result = 0
type = 2305
#9 0x00000000005bba72 in Ffuncall (nargs=3, args=0x7ffcfc374720) at ../../src/eval.c:2754
fun = <optimized out>
original_fun = 4554512
funcar = 0
numargs = 2
lisp_numargs = 6
val = <optimized out>
internal_args = <optimized out>
count = 18
#10 0x00000000005fcaad in exec_byte_code (bytestr=2305, vector=3, maxdepth=6, args_template=0, nargs=3, args=0x400448) at ../../src/bytecode.c:880
targets = {0x5fc882, 0x5fd1e5, 0x5fd1ea, 0x5fd1ef, 0x5fd1f5, 0x5fc8e3, 0x5fcedf, 0x5fcf25, 0x5fced5, 0x5fceda, 0x5fcea6, 0x5fceab, 0x5fc924, 0x5fc928, 0x5fcc6f, 0x5fceb0, 0x5fce3a, 0x5fce3f, 0x5fcbe9, 0x5fcbee, 0x5fc9b5, 0x5fc9b8, 0x5fcc18, 0x5fcbf3, 0x5fcbba, 0x5fcbbf, 0x5fcbc4, 0x5fcbc9, 0x5fca49, 0x5fca50, 0x5fcc5b, 0x5fcb95, 0x5fcb80, 0x5fcb85, 0x5fcb8a, 0x5fdf7e, 0x5fca8f, 0x5fca90, 0x5fcbd5, 0x5fcb5b, 0x5fe45a, 0x5fe45f, 0x5fe464, 0x5fe430, 0x5fcad0, 0x5fcad0, 0x5fe3d6, 0x5fe435, 0x5fe291, 0x5fe287, 0x5fe1c7, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5ff150, 0x5ff0a2, 0x5ff0f9, 0x5fef22, 0x5fef79, 0x5fce44, 0x5fcd89, 0x5feff8, 0x5fcd18, 0x5fcdc9, 0x5ff062, 0x5feafc, 0x5ff335, 0x5ff2bb, 0x5ff2f8, 0x5ff28c, 0x5ff375, 0x5ff3b5, 0x5fe967, 0x5feef3, 0x5fee73, 0x5feeb3, 0x5fed72, 0x5fedb2, 0x5fedf9, 0x5fee36, 0x5feb2b, 0x5febb8, 0x5febf8, 0x5fec3c, 0x5fece8, 0x5feca3, 0x5fed2d, 0x5fd7b3, 0x5fd7f8, 0x5fd835, 0x5fd874, 0x5fd8b1, 0x5fd8ee, 0x5fd92b, 0x5fd9e5, 0x5fcb2d, 0x5fda46, 0x5fda75, 0x5fdaf3, 0x5fdb58, 0x5fdbb9, 0x5fdbe8, 0x5fdc19, 0x5fdc4a, 0x5fdca2, 0x5fc882, 0x5fdcf2, 0x5fdd27, 0x5fdd5c, 0x5fdd91, 0x5fddc6, 0x5fddfb, 0x5fcb2d, 0x5fc882, 0x5fde2a, 0x5fde71, 0x5fdea0, 0x5fdecf, 0x5fdf0f, 0x5fdf4f, 0x5fd423, 0x5fd470, 0x5fd691, 0x5fd6d1, 0x5fd65c, 0x5fd784, 0x5fc882, 0x5fe100, 0x5fe469, 0x5fcc83, 0x5fe52c, 0x5fe7db, 0x5fe86d, 0x5fe091, 0x5fe0df, 0x5fcc2c, 0x5fdf83, 0x5fd0a4, 0x5fe154, 0x5fe182, 0x5fe2bf, 0x5fe32c, 0x5fe373, 0x5fe760, 0x5fe3ea, 0x5fd711, 0x5fd755, 0x5fd4b0, 0x5fd4df, 0x5fd50e, 0x5fd53d, 0x5fd57d, 0x5fd5bd, 0x5fd5fd, 0x5fd63d, 0x5fd205, 0x5fd245, 0x5fd285, 0x5fd2b4, 0x5fd2f4, 0x5fd334, 0x5fd38d, 0x5fd3e6, 0x5fd968, 0x5fd9a5, 0x5fd126, 0x5fd18e, 0x5fc882, 0x5fe62a, 0x5fe6da, 0x5fe996, 0x5fea77, 0x5fdfb1, 0x5ff23c, 0x5feb68, 0x5fdaa6, 0x5fcf81, 0x5fcfc6, 0x5fc882, 0x5fc882, 0x5fd01e, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fd069 <repeats 64 times>}
count = 16
stack = {
pc = 0xc1866d "*\207",
byte_string = 9710228,
byte_string_start = 0xc18661 "\303\001\030\031\n\206\t",
next = 0x7ffcfc374960
}
result = 0
type = 2305
#11 0x00000000005bba72 in Ffuncall (nargs=4, args=0x7ffcfc3748d0) at ../../src/eval.c:2754
fun = <optimized out>
original_fun = 3874224
funcar = 0
numargs = 3
lisp_numargs = 6
val = <optimized out>
internal_args = <optimized out>
count = 15
#12 0x00000000005fcaad in exec_byte_code (bytestr=2305, vector=4, maxdepth=6, args_template=0, nargs=0, args=0x400448) at ../../src/bytecode.c:880
targets = {0x5fc882, 0x5fd1e5, 0x5fd1ea, 0x5fd1ef, 0x5fd1f5, 0x5fc8e3, 0x5fcedf, 0x5fcf25, 0x5fced5, 0x5fceda, 0x5fcea6, 0x5fceab, 0x5fc924, 0x5fc928, 0x5fcc6f, 0x5fceb0, 0x5fce3a, 0x5fce3f, 0x5fcbe9, 0x5fcbee, 0x5fc9b5, 0x5fc9b8, 0x5fcc18, 0x5fcbf3, 0x5fcbba, 0x5fcbbf, 0x5fcbc4, 0x5fcbc9, 0x5fca49, 0x5fca50, 0x5fcc5b, 0x5fcb95, 0x5fcb80, 0x5fcb85, 0x5fcb8a, 0x5fdf7e, 0x5fca8f, 0x5fca90, 0x5fcbd5, 0x5fcb5b, 0x5fe45a, 0x5fe45f, 0x5fe464, 0x5fe430, 0x5fcad0, 0x5fcad0, 0x5fe3d6, 0x5fe435, 0x5fe291, 0x5fe287, 0x5fe1c7, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5ff150, 0x5ff0a2, 0x5ff0f9, 0x5fef22, 0x5fef79, 0x5fce44, 0x5fcd89, 0x5feff8, 0x5fcd18, 0x5fcdc9, 0x5ff062, 0x5feafc, 0x5ff335, 0x5ff2bb, 0x5ff2f8, 0x5ff28c, 0x5ff375, 0x5ff3b5, 0x5fe967, 0x5feef3, 0x5fee73, 0x5feeb3, 0x5fed72, 0x5fedb2, 0x5fedf9, 0x5fee36, 0x5feb2b, 0x5febb8, 0x5febf8, 0x5fec3c, 0x5fece8, 0x5feca3, 0x5fed2d, 0x5fd7b3, 0x5fd7f8, 0x5fd835, 0x5fd874, 0x5fd8b1, 0x5fd8ee, 0x5fd92b, 0x5fd9e5, 0x5fcb2d, 0x5fda46, 0x5fda75, 0x5fdaf3, 0x5fdb58, 0x5fdbb9, 0x5fdbe8, 0x5fdc19, 0x5fdc4a, 0x5fdca2, 0x5fc882, 0x5fdcf2, 0x5fdd27, 0x5fdd5c, 0x5fdd91, 0x5fddc6, 0x5fddfb, 0x5fcb2d, 0x5fc882, 0x5fde2a, 0x5fde71, 0x5fdea0, 0x5fdecf, 0x5fdf0f, 0x5fdf4f, 0x5fd423, 0x5fd470, 0x5fd691, 0x5fd6d1, 0x5fd65c, 0x5fd784, 0x5fc882, 0x5fe100, 0x5fe469, 0x5fcc83, 0x5fe52c, 0x5fe7db, 0x5fe86d, 0x5fe091, 0x5fe0df, 0x5fcc2c, 0x5fdf83, 0x5fd0a4, 0x5fe154, 0x5fe182, 0x5fe2bf, 0x5fe32c, 0x5fe373, 0x5fe760, 0x5fe3ea, 0x5fd711, 0x5fd755, 0x5fd4b0, 0x5fd4df, 0x5fd50e, 0x5fd53d, 0x5fd57d, 0x5fd5bd, 0x5fd5fd, 0x5fd63d, 0x5fd205, 0x5fd245, 0x5fd285, 0x5fd2b4, 0x5fd2f4, 0x5fd334, 0x5fd38d, 0x5fd3e6, 0x5fd968, 0x5fd9a5, 0x5fd126, 0x5fd18e, 0x5fc882, 0x5fe62a, 0x5fe6da, 0x5fe996, 0x5fea77, 0x5fdfb1, 0x5ff23c, 0x5feb68, 0x5fdaa6, 0x5fcf81, 0x5fcfc6, 0x5fc882, 0x5fc882, 0x5fd01e, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fd069 <repeats 64 times>}
count = 13
stack = {
pc = 0x35c8952 "\210)\t\203\274",
byte_string = 48010052,
byte_string_start = 0x35c88b8 "p\306\307\030\t\203?",
next = 0x7ffcfc374c30
}
result = 0
type = 2305
#13 0x00000000005bba72 in Ffuncall (nargs=1, args=0x7ffcfc374bc8) at ../../src/eval.c:2754
fun = <optimized out>
original_fun = 55760293
funcar = 0
numargs = 0
lisp_numargs = 6
val = <optimized out>
internal_args = <optimized out>
count = 12
#14 0x00000000005bce84 in Fapply (nargs=2, args=<optimized out>) at ../../src/eval.c:2274
i = <optimized out>
numargs = <optimized out>
funcall_nargs = <optimized out>
funcall_args = 0x0
spread_arg = 0
fun = <optimized out>
retval = <optimized out>
sa_avail = 16384
sa_must_free = false
#15 0x00000000005bbf06 in Ffuncall (nargs=3, args=0x7ffcfc374bc0) at ../../src/eval.c:2673
fun = <optimized out>
original_fun = 9504
funcar = 0
numargs = 2
lisp_numargs = 6
val = <optimized out>
internal_args = <optimized out>
count = 11
#16 0x00000000005fcaad in exec_byte_code (bytestr=2305, vector=3, maxdepth=6, args_template=0, nargs=0, args=0x400448) at ../../src/bytecode.c:880
targets = {0x5fc882, 0x5fd1e5, 0x5fd1ea, 0x5fd1ef, 0x5fd1f5, 0x5fc8e3, 0x5fcedf, 0x5fcf25, 0x5fced5, 0x5fceda, 0x5fcea6, 0x5fceab, 0x5fc924, 0x5fc928, 0x5fcc6f, 0x5fceb0, 0x5fce3a, 0x5fce3f, 0x5fcbe9, 0x5fcbee, 0x5fc9b5, 0x5fc9b8, 0x5fcc18, 0x5fcbf3, 0x5fcbba, 0x5fcbbf, 0x5fcbc4, 0x5fcbc9, 0x5fca49, 0x5fca50, 0x5fcc5b, 0x5fcb95, 0x5fcb80, 0x5fcb85, 0x5fcb8a, 0x5fdf7e, 0x5fca8f, 0x5fca90, 0x5fcbd5, 0x5fcb5b, 0x5fe45a, 0x5fe45f, 0x5fe464, 0x5fe430, 0x5fcad0, 0x5fcad0, 0x5fe3d6, 0x5fe435, 0x5fe291, 0x5fe287, 0x5fe1c7, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5ff150, 0x5ff0a2, 0x5ff0f9, 0x5fef22, 0x5fef79, 0x5fce44, 0x5fcd89, 0x5feff8, 0x5fcd18, 0x5fcdc9, 0x5ff062, 0x5feafc, 0x5ff335, 0x5ff2bb, 0x5ff2f8, 0x5ff28c, 0x5ff375, 0x5ff3b5, 0x5fe967, 0x5feef3, 0x5fee73, 0x5feeb3, 0x5fed72, 0x5fedb2, 0x5fedf9, 0x5fee36, 0x5feb2b, 0x5febb8, 0x5febf8, 0x5fec3c, 0x5fece8, 0x5feca3, 0x5fed2d, 0x5fd7b3, 0x5fd7f8, 0x5fd835, 0x5fd874, 0x5fd8b1, 0x5fd8ee, 0x5fd92b, 0x5fd9e5, 0x5fcb2d, 0x5fda46, 0x5fda75, 0x5fdaf3, 0x5fdb58, 0x5fdbb9, 0x5fdbe8, 0x5fdc19, 0x5fdc4a, 0x5fdca2, 0x5fc882, 0x5fdcf2, 0x5fdd27, 0x5fdd5c, 0x5fdd91, 0x5fddc6, 0x5fddfb, 0x5fcb2d, 0x5fc882, 0x5fde2a, 0x5fde71, 0x5fdea0, 0x5fdecf, 0x5fdf0f, 0x5fdf4f, 0x5fd423, 0x5fd470, 0x5fd691, 0x5fd6d1, 0x5fd65c, 0x5fd784, 0x5fc882, 0x5fe100, 0x5fe469, 0x5fcc83, 0x5fe52c, 0x5fe7db, 0x5fe86d, 0x5fe091, 0x5fe0df, 0x5fcc2c, 0x5fdf83, 0x5fd0a4, 0x5fe154, 0x5fe182, 0x5fe2bf, 0x5fe32c, 0x5fe373, 0x5fe760, 0x5fe3ea, 0x5fd711, 0x5fd755, 0x5fd4b0, 0x5fd4df, 0x5fd50e, 0x5fd53d, 0x5fd57d, 0x5fd5bd, 0x5fd5fd, 0x5fd63d, 0x5fd205, 0x5fd245, 0x5fd285, 0x5fd2b4, 0x5fd2f4, 0x5fd334, 0x5fd38d, 0x5fd3e6, 0x5fd968, 0x5fd9a5, 0x5fd126, 0x5fd18e, 0x5fc882, 0x5fe62a, 0x5fe6da, 0x5fe996, 0x5fea77, 0x5fdfb1, 0x5ff23c, 0x5feb68, 0x5fdaa6, 0x5fcf81, 0x5fcfc6, 0x5fc882, 0x5fc882, 0x5fd01e, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fd069 <repeats 64 times>}
count = 11
stack = {
pc = 0x10b6553 "\207",
byte_string = 18033780,
byte_string_start = 0x10b6548 "\300\301\002\"\206\v",
next = 0x7ffcfc374df0
}
result = 0
type = 2305
#17 0x00000000005bba72 in Ffuncall (nargs=1, args=0x7ffcfc374d88) at ../../src/eval.c:2754
fun = <optimized out>
original_fun = 41483120
funcar = 0
numargs = 0
lisp_numargs = 6
val = <optimized out>
internal_args = <optimized out>
count = 10
#18 0x00000000005fcaad in exec_byte_code (bytestr=2305, vector=1, maxdepth=6, args_template=0, nargs=91483, args=0x400448) at ../../src/bytecode.c:880
targets = {0x5fc882, 0x5fd1e5, 0x5fd1ea, 0x5fd1ef, 0x5fd1f5, 0x5fc8e3, 0x5fcedf, 0x5fcf25, 0x5fced5, 0x5fceda, 0x5fcea6, 0x5fceab, 0x5fc924, 0x5fc928, 0x5fcc6f, 0x5fceb0, 0x5fce3a, 0x5fce3f, 0x5fcbe9, 0x5fcbee, 0x5fc9b5, 0x5fc9b8, 0x5fcc18, 0x5fcbf3, 0x5fcbba, 0x5fcbbf, 0x5fcbc4, 0x5fcbc9, 0x5fca49, 0x5fca50, 0x5fcc5b, 0x5fcb95, 0x5fcb80, 0x5fcb85, 0x5fcb8a, 0x5fdf7e, 0x5fca8f, 0x5fca90, 0x5fcbd5, 0x5fcb5b, 0x5fe45a, 0x5fe45f, 0x5fe464, 0x5fe430, 0x5fcad0, 0x5fcad0, 0x5fe3d6, 0x5fe435, 0x5fe291, 0x5fe287, 0x5fe1c7, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5ff150, 0x5ff0a2, 0x5ff0f9, 0x5fef22, 0x5fef79, 0x5fce44, 0x5fcd89, 0x5feff8, 0x5fcd18, 0x5fcdc9, 0x5ff062, 0x5feafc, 0x5ff335, 0x5ff2bb, 0x5ff2f8, 0x5ff28c, 0x5ff375, 0x5ff3b5, 0x5fe967, 0x5feef3, 0x5fee73, 0x5feeb3, 0x5fed72, 0x5fedb2, 0x5fedf9, 0x5fee36, 0x5feb2b, 0x5febb8, 0x5febf8, 0x5fec3c, 0x5fece8, 0x5feca3, 0x5fed2d, 0x5fd7b3, 0x5fd7f8, 0x5fd835, 0x5fd874, 0x5fd8b1, 0x5fd8ee, 0x5fd92b, 0x5fd9e5, 0x5fcb2d, 0x5fda46, 0x5fda75, 0x5fdaf3, 0x5fdb58, 0x5fdbb9, 0x5fdbe8, 0x5fdc19, 0x5fdc4a, 0x5fdca2, 0x5fc882, 0x5fdcf2, 0x5fdd27, 0x5fdd5c, 0x5fdd91, 0x5fddc6, 0x5fddfb, 0x5fcb2d, 0x5fc882, 0x5fde2a, 0x5fde71, 0x5fdea0, 0x5fdecf, 0x5fdf0f, 0x5fdf4f, 0x5fd423, 0x5fd470, 0x5fd691, 0x5fd6d1, 0x5fd65c, 0x5fd784, 0x5fc882, 0x5fe100, 0x5fe469, 0x5fcc83, 0x5fe52c, 0x5fe7db, 0x5fe86d, 0x5fe091, 0x5fe0df, 0x5fcc2c, 0x5fdf83, 0x5fd0a4, 0x5fe154, 0x5fe182, 0x5fe2bf, 0x5fe32c, 0x5fe373, 0x5fe760, 0x5fe3ea, 0x5fd711, 0x5fd755, 0x5fd4b0, 0x5fd4df, 0x5fd50e, 0x5fd53d, 0x5fd57d, 0x5fd5bd, 0x5fd5fd, 0x5fd63d, 0x5fd205, 0x5fd245, 0x5fd285, 0x5fd2b4, 0x5fd2f4, 0x5fd334, 0x5fd38d, 0x5fd3e6, 0x5fd968, 0x5fd9a5, 0x5fd126, 0x5fd18e, 0x5fc882, 0x5fe62a, 0x5fe6da, 0x5fe996, 0x5fea77, 0x5fdfb1, 0x5ff23c, 0x5feb68, 0x5fdaa6, 0x5fcf81, 0x5fcfc6, 0x5fc882, 0x5fc882, 0x5fd01e, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fd069 <repeats 64 times>}
count = 9
stack = {
pc = 0x35c87fb "\210\r\024\332\324\323\"\210)\001A\266\202\202r",
byte_string = 49284980,
byte_string_start = 0x35c8740 "\306\061\322",
next = 0x7ffcfc374ff0
}
result = 0
type = 2305
#19 0x00000000005bba72 in Ffuncall (nargs=2, args=0x7ffcfc374f70) at ../../src/eval.c:2754
fun = <optimized out>
original_fun = 41482928
funcar = 0
numargs = 1
lisp_numargs = 6
val = <optimized out>
internal_args = <optimized out>
count = 8
#20 0x00000000005fcaad in exec_byte_code (bytestr=2305, vector=2, maxdepth=6, args_template=140724539969400, nargs=1, args=0x400448) at ../../src/bytecode.c:880
targets = {0x5fc882, 0x5fd1e5, 0x5fd1ea, 0x5fd1ef, 0x5fd1f5, 0x5fc8e3, 0x5fcedf, 0x5fcf25, 0x5fced5, 0x5fceda, 0x5fcea6, 0x5fceab, 0x5fc924, 0x5fc928, 0x5fcc6f, 0x5fceb0, 0x5fce3a, 0x5fce3f, 0x5fcbe9, 0x5fcbee, 0x5fc9b5, 0x5fc9b8, 0x5fcc18, 0x5fcbf3, 0x5fcbba, 0x5fcbbf, 0x5fcbc4, 0x5fcbc9, 0x5fca49, 0x5fca50, 0x5fcc5b, 0x5fcb95, 0x5fcb80, 0x5fcb85, 0x5fcb8a, 0x5fdf7e, 0x5fca8f, 0x5fca90, 0x5fcbd5, 0x5fcb5b, 0x5fe45a, 0x5fe45f, 0x5fe464, 0x5fe430, 0x5fcad0, 0x5fcad0, 0x5fe3d6, 0x5fe435, 0x5fe291, 0x5fe287, 0x5fe1c7, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5ff150, 0x5ff0a2, 0x5ff0f9, 0x5fef22, 0x5fef79, 0x5fce44, 0x5fcd89, 0x5feff8, 0x5fcd18, 0x5fcdc9, 0x5ff062, 0x5feafc, 0x5ff335, 0x5ff2bb, 0x5ff2f8, 0x5ff28c, 0x5ff375, 0x5ff3b5, 0x5fe967, 0x5feef3, 0x5fee73, 0x5feeb3, 0x5fed72, 0x5fedb2, 0x5fedf9, 0x5fee36, 0x5feb2b, 0x5febb8, 0x5febf8, 0x5fec3c, 0x5fece8, 0x5feca3, 0x5fed2d, 0x5fd7b3, 0x5fd7f8, 0x5fd835, 0x5fd874, 0x5fd8b1, 0x5fd8ee, 0x5fd92b, 0x5fd9e5, 0x5fcb2d, 0x5fda46, 0x5fda75, 0x5fdaf3, 0x5fdb58, 0x5fdbb9, 0x5fdbe8, 0x5fdc19, 0x5fdc4a, 0x5fdca2, 0x5fc882, 0x5fdcf2, 0x5fdd27, 0x5fdd5c, 0x5fdd91, 0x5fddc6, 0x5fddfb, 0x5fcb2d, 0x5fc882, 0x5fde2a, 0x5fde71, 0x5fdea0, 0x5fdecf, 0x5fdf0f, 0x5fdf4f, 0x5fd423, 0x5fd470, 0x5fd691, 0x5fd6d1, 0x5fd65c, 0x5fd784, 0x5fc882, 0x5fe100, 0x5fe469, 0x5fcc83, 0x5fe52c, 0x5fe7db, 0x5fe86d, 0x5fe091, 0x5fe0df, 0x5fcc2c, 0x5fdf83, 0x5fd0a4, 0x5fe154, 0x5fe182, 0x5fe2bf, 0x5fe32c, 0x5fe373, 0x5fe760, 0x5fe3ea, 0x5fd711, 0x5fd755, 0x5fd4b0, 0x5fd4df, 0x5fd50e, 0x5fd53d, 0x5fd57d, 0x5fd5bd, 0x5fd5fd, 0x5fd63d, 0x5fd205, 0x5fd245, 0x5fd285, 0x5fd2b4, 0x5fd2f4, 0x5fd334, 0x5fd38d, 0x5fd3e6, 0x5fd968, 0x5fd9a5, 0x5fd126, 0x5fd18e, 0x5fc882, 0x5fe62a, 0x5fe6da, 0x5fe996, 0x5fea77, 0x5fdfb1, 0x5ff23c, 0x5feb68, 0x5fdaa6, 0x5fcf81, 0x5fcfc6, 0x5fc882, 0x5fc882, 0x5fd01e, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fd069 <repeats 64 times>}
count = 8
stack = {
pc = 0x35d4a38 "\210\004\204\262\001\211\334>\203\273\001\006\a;\203\250\001\335\006\b!\204\273\001\006\b\336\006\016!\230\203\273\001\337\332\006\r\005@\"!\210\001A\266\202\202\060",
byte_string = 50354644,
byte_string_start = 0x35d48a8 "\211@\302\001\b\"\002A@\303\004!\304\211\211\211\005:\204\032",
next = 0x7ffcfc375180
}
result = 0
type = 2305
#21 0x00000000005bba72 in Ffuncall (nargs=2, args=0x7ffcfc375110) at ../../src/eval.c:2754
fun = <optimized out>
original_fun = 41462528
funcar = 0
numargs = 1
lisp_numargs = 6
val = <optimized out>
internal_args = <optimized out>
count = 7
#22 0x00000000005fcaad in exec_byte_code (bytestr=2305, vector=2, maxdepth=6, args_template=0, nargs=1, args=0x400448) at ../../src/bytecode.c:880
targets = {0x5fc882, 0x5fd1e5, 0x5fd1ea, 0x5fd1ef, 0x5fd1f5, 0x5fc8e3, 0x5fcedf, 0x5fcf25, 0x5fced5, 0x5fceda, 0x5fcea6, 0x5fceab, 0x5fc924, 0x5fc928, 0x5fcc6f, 0x5fceb0, 0x5fce3a, 0x5fce3f, 0x5fcbe9, 0x5fcbee, 0x5fc9b5, 0x5fc9b8, 0x5fcc18, 0x5fcbf3, 0x5fcbba, 0x5fcbbf, 0x5fcbc4, 0x5fcbc9, 0x5fca49, 0x5fca50, 0x5fcc5b, 0x5fcb95, 0x5fcb80, 0x5fcb85, 0x5fcb8a, 0x5fdf7e, 0x5fca8f, 0x5fca90, 0x5fcbd5, 0x5fcb5b, 0x5fe45a, 0x5fe45f, 0x5fe464, 0x5fe430, 0x5fcad0, 0x5fcad0, 0x5fe3d6, 0x5fe435, 0x5fe291, 0x5fe287, 0x5fe1c7, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5ff150, 0x5ff0a2, 0x5ff0f9, 0x5fef22, 0x5fef79, 0x5fce44, 0x5fcd89, 0x5feff8, 0x5fcd18, 0x5fcdc9, 0x5ff062, 0x5feafc, 0x5ff335, 0x5ff2bb, 0x5ff2f8, 0x5ff28c, 0x5ff375, 0x5ff3b5, 0x5fe967, 0x5feef3, 0x5fee73, 0x5feeb3, 0x5fed72, 0x5fedb2, 0x5fedf9, 0x5fee36, 0x5feb2b, 0x5febb8, 0x5febf8, 0x5fec3c, 0x5fece8, 0x5feca3, 0x5fed2d, 0x5fd7b3, 0x5fd7f8, 0x5fd835, 0x5fd874, 0x5fd8b1, 0x5fd8ee, 0x5fd92b, 0x5fd9e5, 0x5fcb2d, 0x5fda46, 0x5fda75, 0x5fdaf3, 0x5fdb58, 0x5fdbb9, 0x5fdbe8, 0x5fdc19, 0x5fdc4a, 0x5fdca2, 0x5fc882, 0x5fdcf2, 0x5fdd27, 0x5fdd5c, 0x5fdd91, 0x5fddc6, 0x5fddfb, 0x5fcb2d, 0x5fc882, 0x5fde2a, 0x5fde71, 0x5fdea0, 0x5fdecf, 0x5fdf0f, 0x5fdf4f, 0x5fd423, 0x5fd470, 0x5fd691, 0x5fd6d1, 0x5fd65c, 0x5fd784, 0x5fc882, 0x5fe100, 0x5fe469, 0x5fcc83, 0x5fe52c, 0x5fe7db, 0x5fe86d, 0x5fe091, 0x5fe0df, 0x5fcc2c, 0x5fdf83, 0x5fd0a4, 0x5fe154, 0x5fe182, 0x5fe2bf, 0x5fe32c, 0x5fe373, 0x5fe760, 0x5fe3ea, 0x5fd711, 0x5fd755, 0x5fd4b0, 0x5fd4df, 0x5fd50e, 0x5fd53d, 0x5fd57d, 0x5fd5bd, 0x5fd5fd, 0x5fd63d, 0x5fd205, 0x5fd245, 0x5fd285, 0x5fd2b4, 0x5fd2f4, 0x5fd334, 0x5fd38d, 0x5fd3e6, 0x5fd968, 0x5fd9a5, 0x5fd126, 0x5fd18e, 0x5fc882, 0x5fe62a, 0x5fe6da, 0x5fe996, 0x5fea77, 0x5fdfb1, 0x5ff23c, 0x5feb68, 0x5fdaa6, 0x5fcf81, 0x5fcfc6, 0x5fc882, 0x5fc882, 0x5fd01e, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fd069 <repeats 64 times>}
count = 7
stack = {
pc = 0x35d4655 "\207\303\304\305\003B\"\207",
byte_string = 50369588,
byte_string_start = 0x35d4640 "\211@\300=\203\026",
next = 0x7ffcfc375680
}
result = 0
type = 2305
#23 0x00000000005bba72 in Ffuncall (nargs=2, args=0x7ffcfc375378) at ../../src/eval.c:2754
fun = <optimized out>
original_fun = 457984
funcar = 0
numargs = 1
lisp_numargs = 6
val = <optimized out>
internal_args = <optimized out>
count = 6
#24 0x00000000005b7159 in Ffuncall_interactively (nargs=2, args=0x7ffcfc375378) at ../../src/callint.c:248
No locals.
#25 0x00000000005bbf06 in Ffuncall (nargs=3, args=0x7ffcfc375370) at ../../src/eval.c:2673
fun = <optimized out>
original_fun = 24000
funcar = 0
numargs = 2
lisp_numargs = 6
val = <optimized out>
internal_args = <optimized out>
count = 4
#26 0x00000000005b87c4 in Fcall_interactively (function=140724539970416, record_flag=0, keys=140724539970464) at ../../src/callint.c:836
val = <optimized out>
args = 0x7ffcfc375370
visargs = 0xfff9f86ea710
specs = <optimized out>
filter_specs = <optimized out>
teml = <optimized out>
up_event = <optimized out>
sa_avail = <optimized out>
sa_must_free = false
next_event = <optimized out>
prefix_arg = 0
string = <optimized out>
tem = <optimized out>
varies = 0x17ff6f4a5fab0 <Address 0x17ff6f4a5fab0 out of bounds>
i = <optimized out>
nargs = 3
mark = <optimized out>
arg_from_tty = <optimized out>
key_count = 1
record_then_fail = false
save_this_command = 0
save_last_command = 4825984
save_this_original_command = 0
save_real_this_command = 0
#27 0x00000000005bbdfc in Ffuncall (nargs=4, args=0x7ffcfc3755f8) at ../../src/eval.c:2700
internal_argbuf = {457984, 0, 0, 4440414, 140724539971312, 5928744, 0, 140724539971312}
fun = <optimized out>
original_fun = <optimized out>
funcar = 0
numargs = 3
lisp_numargs = 6
val = <optimized out>
internal_args = 0x7ffcfc375600
count = 3
#28 0x00000000005fcaad in exec_byte_code (bytestr=2305, vector=4, maxdepth=6, args_template=0, nargs=4, args=0x400448) at ../../src/bytecode.c:880
targets = {0x5fc882, 0x5fd1e5, 0x5fd1ea, 0x5fd1ef, 0x5fd1f5, 0x5fc8e3, 0x5fcedf, 0x5fcf25, 0x5fced5, 0x5fceda, 0x5fcea6, 0x5fceab, 0x5fc924, 0x5fc928, 0x5fcc6f, 0x5fceb0, 0x5fce3a, 0x5fce3f, 0x5fcbe9, 0x5fcbee, 0x5fc9b5, 0x5fc9b8, 0x5fcc18, 0x5fcbf3, 0x5fcbba, 0x5fcbbf, 0x5fcbc4, 0x5fcbc9, 0x5fca49, 0x5fca50, 0x5fcc5b, 0x5fcb95, 0x5fcb80, 0x5fcb85, 0x5fcb8a, 0x5fdf7e, 0x5fca8f, 0x5fca90, 0x5fcbd5, 0x5fcb5b, 0x5fe45a, 0x5fe45f, 0x5fe464, 0x5fe430, 0x5fcad0, 0x5fcad0, 0x5fe3d6, 0x5fe435, 0x5fe291, 0x5fe287, 0x5fe1c7, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5ff150, 0x5ff0a2, 0x5ff0f9, 0x5fef22, 0x5fef79, 0x5fce44, 0x5fcd89, 0x5feff8, 0x5fcd18, 0x5fcdc9, 0x5ff062, 0x5feafc, 0x5ff335, 0x5ff2bb, 0x5ff2f8, 0x5ff28c, 0x5ff375, 0x5ff3b5, 0x5fe967, 0x5feef3, 0x5fee73, 0x5feeb3, 0x5fed72, 0x5fedb2, 0x5fedf9, 0x5fee36, 0x5feb2b, 0x5febb8, 0x5febf8, 0x5fec3c, 0x5fece8, 0x5feca3, 0x5fed2d, 0x5fd7b3, 0x5fd7f8, 0x5fd835, 0x5fd874, 0x5fd8b1, 0x5fd8ee, 0x5fd92b, 0x5fd9e5, 0x5fcb2d, 0x5fda46, 0x5fda75, 0x5fdaf3, 0x5fdb58, 0x5fdbb9, 0x5fdbe8, 0x5fdc19, 0x5fdc4a, 0x5fdca2, 0x5fc882, 0x5fdcf2, 0x5fdd27, 0x5fdd5c, 0x5fdd91, 0x5fddc6, 0x5fddfb, 0x5fcb2d, 0x5fc882, 0x5fde2a, 0x5fde71, 0x5fdea0, 0x5fdecf, 0x5fdf0f, 0x5fdf4f, 0x5fd423, 0x5fd470, 0x5fd691, 0x5fd6d1, 0x5fd65c, 0x5fd784, 0x5fc882, 0x5fe100, 0x5fe469, 0x5fcc83, 0x5fe52c, 0x5fe7db, 0x5fe86d, 0x5fe091, 0x5fe0df, 0x5fcc2c, 0x5fdf83, 0x5fd0a4, 0x5fe154, 0x5fe182, 0x5fe2bf, 0x5fe32c, 0x5fe373, 0x5fe760, 0x5fe3ea, 0x5fd711, 0x5fd755, 0x5fd4b0, 0x5fd4df, 0x5fd50e, 0x5fd53d, 0x5fd57d, 0x5fd5bd, 0x5fd5fd, 0x5fd63d, 0x5fd205, 0x5fd245, 0x5fd285, 0x5fd2b4, 0x5fd2f4, 0x5fd334, 0x5fd38d, 0x5fd3e6, 0x5fd968, 0x5fd9a5, 0x5fd126, 0x5fd18e, 0x5fc882, 0x5fe62a, 0x5fe6da, 0x5fe996, 0x5fea77, 0x5fdfb1, 0x5ff23c, 0x5feb68, 0x5fdaa6, 0x5fcf81, 0x5fcfc6, 0x5fc882, 0x5fc882, 0x5fd01e, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fc882, 0x5fd069 <repeats 64 times>}
count = 3
stack = {
pc = 0xbf57b7 "\006\006\071\203\242",
byte_string = 10150908,
byte_string_start = 0xbf573c "\306\020\211?\205\023",
next = 0x0
}
result = 0
type = 2305
#29 0x00000000005bba72 in Ffuncall (nargs=5, args=0x7ffcfc375790) at ../../src/eval.c:2754
fun = <optimized out>
original_fun = 14784
funcar = 0
numargs = 4
lisp_numargs = 6
val = <optimized out>
internal_args = <optimized out>
count = 2
#30 0x00000000005bc079 in call4 (fn=<optimized out>, arg1=<optimized out>, arg2=<optimized out>, arg3=<optimized out>, arg4=<optimized out>) at ../../src/eval.c:2577
No locals.
#31 0x000000000053b1b2 in read_char (commandflag=1, map=127403475, prev_event=0, used_mouse_menu=0x7ffcfc375ebf, end_time=0x0) at ../../src/keyboard.c:2835
prev_buffer = 0x31cac30
c = 130132563
local_getcjmp = {{
__jmpbuf = {0, 369207272891589228, 52210736, 4611686018477719552, 13599328, 1, -367526741044780436, 369207937242997356},
__mask_was_saved = 0,
__saved_mask = {
__val = {0 <repeats 16 times>}
}
}}
save_jump = {{
__jmpbuf = {0, 369209120862741100, 117521837, 5, 0, 1, -367526741044780436, 369207937242997356},
__mask_was_saved = 0,
__saved_mask = {
__val = {97323811, 0, 0, 97323827, 97323824, 0, 4611686018595160064, 4611686019484352512, 6072415, 41400304, 6073252, 166272, 0, 4611686018595160064, 97323827, 1}
}
}}
tem = 457984
save = <optimized out>
previous_echo_area_message = 0
also_record = 0
reread = false
recorded = false
polling_stopped_here = false
orig_kboard = 0xcf8260
#32 0x000000000053f96e in read_key_sequence (keybuf=0x7ffcfc375f20, prompt=0, dont_downcase_last=false, can_return_switch_frame=true, fix_current_buffer=true, prevent_redisplay=<optimized out>, bufsize=30) at ../../src/keyboard.c:9055
interrupted_kboard = <optimized out>
interrupted_frame = 0xcfca00
key = <optimized out>
used_mouse_menu = false
echo_local_start = 0
last_real_key_start = 0
keys_local_start = 0
new_binding = <optimized out>
t = 0
echo_start = 0
keys_start = 0
current_binding = 127403475
first_event = 0
first_unbound = 31
mock_input = 0
fkey = {
parent = 13805859,
map = 13805859,
start = 0,
end = 0
}
keytran = {
parent = 13535811,
map = 13535811,
start = 0,
end = 0
}
indec = {
parent = 13805875,
map = 13805875,
start = 0,
end = 0
}
shift_translated = false
delayed_switch_frame = 0
original_uppercase = 5930301
original_uppercase_position = -1
dummyflag = <optimized out>
starting_buffer = 0x31cac30
fake_prefixed_keys = 0
#33 0x0000000000541334 in command_loop_1 () at ../../src/keyboard.c:1357
cmd = <optimized out>
keybuf = {98, 14, 246, 18, 4294967296, 3526540890385783552, 0, 5925508, 0, 28416, 0, 112171987, 140724539973632, 0, 0, 45840, 13437840, 6013092, 157136, 112171987, 9257796, 0, 140724539973632, 5451033, 0, 112171987, 0, 5451319, 0, 6006135}
i = <optimized out>
prev_modiff = 117
prev_buffer = 0x4bab8e0
#34 0x00000000005b9eba in internal_condition_case (bfun=0x541120 <command_loop_1>, handlers=<optimized out>, hfun=0x532d50 <cmd_error>) at ../../src/eval.c:1309
val = <optimized out>
c = 0x8c9
#35 0x0000000000530fac in command_loop_2 (ignore=<optimized out>) at ../../src/keyboard.c:1099
val = 0
#36 0x00000000005b9f48 in internal_catch (tag=<optimized out>, func=0x530f90 <command_loop_2>, arg=0) at ../../src/eval.c:1074
val = 0
c = 0x8c9
#37 0x0000000000530ee2 in command_loop () at ../../src/keyboard.c:1078
No locals.
#38 0x0000000000532846 in recursive_edit_1 () at ../../src/keyboard.c:684
val = <optimized out>
#39 0x0000000000532ba5 in Frecursive_edit () at ../../src/keyboard.c:755
buffer = <optimized out>
#40 0x0000000000413a68 in main (argc=<optimized out>, argv=<optimized out>) at ../../src/emacs.c:1605
dummy = 140081048168216
stack_bottom_variable = 0 '\000'
do_initial_setlocale = <optimized out>
dumping = <optimized out>
skip_args = 1
rlim = {
rlim_cur = 8720000,
rlim_max = 18446744073709551615
}
no_loadup = false
junk = 0x0
dname_arg = 0x0
ch_to_dir = 0x0
original_pwd = 0x2 <Address 0x2 out of bounds>
You can't do that without a process to debug.
(gdb) source ~/xbt.gdb
(gdb) xbt
"insert-file-contents" (0xfc3743a0)
"revert-buffer-insert-file-contents--default-function" (0xfc374570)
"revert-buffer--default" (0xfc374728)
"revert-buffer" (0xfc3748d8)
0x352d5a0 PVEC_COMPILED
"apply" (0xfc374bc8)
"auto-revert-handler" (0xfc374d90)
"auto-revert-notify-handler" (0xfc374f78)
"file-notify-callback" (0xfc375118)
"file-notify-handle-event" (0xfc375380)
"funcall-interactively" (0xfc375378)
"call-interactively" (0xfc375600)
"command-execute" (0xfc375798)
(gdb) p current_buffer
$1 = (struct buffer *) 0x3940870
(gdb) p *current_buffer
$2 = {
header = {
size = 4611686018528256071
},
name_ = 60031812,
filename_ = 59999236,
directory_ = 60034580,
backed_up_ = 0,
save_length_ = 49802,
auto_save_file_name_ = 60034804,
read_only_ = 0,
mark_ = 60032025,
local_var_alist_ = 154793331,
major_mode_ = 4621376,
mode_name_ = 14815124,
mode_line_format_ = 17496099,
header_line_format_ = 48621651,
keymap_ = 17934947,
abbrev_table_ = 53010869,
syntax_table_ = 20669221,
category_table_ = 13559829,
case_fold_search_ = 44448,
tab_width_ = 34,
fill_column_ = 282,
left_margin_ = 2,
auto_fill_function_ = 0,
downcase_table_ = 13561197,
upcase_table_ = 13565413,
case_canon_table_ = 19090613,
case_eqv_table_ = 19753381,
truncate_lines_ = 0,
word_wrap_ = 0,
ctl_arrow_ = 44448,
bidi_display_reordering_ = 44448,
bidi_paragraph_direction_ = 30480,
selective_display_ = 0,
selective_display_ellipses_ = 44448,
minor_modes_ = 0,
overwrite_mode_ = 0,
abbrev_mode_ = 0,
display_table_ = 0,
mark_active_ = 0,
enable_multibyte_characters_ = 44448,
buffer_file_coding_system_ = 0,
file_format_ = 0,
auto_save_file_format_ = 44448,
cache_long_scans_ = 44448,
width_table_ = 0,
pt_marker_ = 0,
begv_marker_ = 0,
zv_marker_ = 0,
point_before_scroll_ = 0,
file_truename_ = 142613924,
invisibility_spec_ = 60262899,
last_selected_window_ = 0,
display_count_ = 30,
left_margin_cols_ = 2,
right_margin_cols_ = 2,
left_fringe_width_ = 0,
right_fringe_width_ = 0,
fringes_outside_margins_ = 0,
scroll_bar_width_ = 0,
scroll_bar_height_ = 0,
vertical_scroll_bar_type_ = 44448,
horizontal_scroll_bar_type_ = 44448,
indicate_empty_lines_ = 44448,
indicate_buffer_boundaries_ = 0,
fringe_indicator_alist_ = 21556691,
fringe_cursor_alist_ = 18337955,
display_time_ = 128283843,
scroll_up_aggressively_ = 0,
scroll_down_aggressively_ = 0,
cursor_type_ = 44448,
extra_line_spacing_ = 0,
cursor_in_non_selected_windows_ = 44448,
own_text = {
beg = 0x584cd90 "##\n# Perl object that represents an optofs filesystem\n#\n# $Id$\n##\npackage Permabit::FileSystem::Optofs;\n\nuse strict;\nuse warnings FATAL => qw(all);\nuse English qw(-no_match_vars);\n\nuse Carp qw(confess"...,
gpt = 12223,
z = 12451,
gpt_byte = 12223,
z_byte = 12451,
gap_size = 1245,
modiff = 44191,
chars_modiff = 44187,
save_modiff = 44191,
overlay_modiff = 3961,
compact = 44191,
beg_unchanged = 229,
end_unchanged = 0,
unchanged_modified = 44168,
overlay_unchanged_modified = 2746,
intervals = 0x7dd8ab0,
markers = 0x67d2e58,
inhibit_shrinking = false,
redisplay = false
},
text = 0x3940ab0,
next = 0x391e2f0,
pt = 12222,
pt_byte = 12222,
begv = 1,
begv_byte = 1,
zv = 12451,
zv_byte = 12451,
base_buffer = 0x0,
indirections = 0,
window_count = 0,
local_flags = '\000' <repeats 14 times>, "\001\000\001\000\000\000\001", '\000' <repeats 16 times>, "\001", '\000' <repeats 11 times>,
modtime = {
tv_sec = 1461804890,
tv_nsec = 0
},
modtime_size = 12450,
auto_save_modified = 44190,
display_error_modiff = 0,
auto_save_failure_time = 0,
last_window_start = 12052,
newline_cache = 0x39447b0,
width_run_cache = 0x0,
bidi_paragraph_cache = 0x0,
prevent_redisplay_optimizations_p = true,
clip_changed = true,
overlays_before = 0x7b71510,
overlays_after = 0x925da10,
overlay_center = 12282,
undo_list_ = 170189555
}
(gdb) p $2.name_
$3 = 60031812
(gdb) xtype
Lisp_String
(gdb) xstring
$4 = (struct Lisp_String *) 0x3940340
"Optofs.pm"
(gdb) fr 3
#3 0x0000000000562b46 in buf_bytepos_to_charpos (b=0x3940870, bytepos=24673) at ../../src/marker.c:297
warning: Source file is more recent than executable.
297 eassert (BUF_BEG_BYTE (b) <= bytepos && bytepos <= BUF_Z_BYTE (b));
(gdb) list
292 {
293 struct Lisp_Marker *tail;
294 ptrdiff_t best_above, best_above_byte;
295 ptrdiff_t best_below, best_below_byte;
296
297 eassert (BUF_BEG_BYTE (b) <= bytepos && bytepos <= BUF_Z_BYTE (b));
298
299 best_above = BUF_Z (b);
300 best_above_byte = BUF_Z_BYTE (b);
301
(gdb) up
#4 0x000000000056c786 in Finsert_file_contents (filename=59999236, visit=<optimized out>, beg=0, end=0, replace=<optimized out>) at ../../src/fileio.c:3853
warning: Source file is more recent than executable.
3853 same_at_end_charpos = BYTE_TO_CHAR (same_at_end);
(gdb) list
3848 overlap = (same_at_start - BEGV_BYTE
3849 - (same_at_end
3850 + (! NILP (end) ? end_offset : st.st_size) - ZV_BYTE));
3851 if (overlap > 0)
3852 same_at_end += overlap;
3853 same_at_end_charpos = BYTE_TO_CHAR (same_at_end);
3854
3855 /* Arrange to read only the nonmatching middle part of the file. */
3856 beg_offset += same_at_start - BEGV_BYTE;
3857 end_offset -= ZV_BYTE - same_at_end;
(gdb) up
#5 0x00000000005bbd7c in Ffuncall (nargs=6, args=0x7ffcfc374398) at ../../src/eval.c:2709
2709 val = (XSUBR (fun)->function.a5
(gdb) list
2704 val = (XSUBR (fun)->function.a4
2705 (internal_args[0], internal_args[1], internal_args[2],
2706 internal_args[3]));
2707 break;
2708 case 5:
2709 val = (XSUBR (fun)->function.a5
2710 (internal_args[0], internal_args[1], internal_args[2],
2711 internal_args[3], internal_args[4]));
2712 break;
2713 case 6:
(gdb) p internal_args[0]
$5 = 59999236
(gdb) xtype
Lisp_String
(gdb) xstring
$6 = (struct Lisp_String *) 0x3938400
"/u1/ken/rh/src/perl/lib/Permabit/FileSystem/Optofs.pm"
(gdb) p internal_args[1]
$7 = 44448
(gdb) xtype
Lisp_Symbol
(gdb) xsymbol
$8 = (struct Lisp_Symbol *) 0xcdb930
"t"
(gdb) p internal_args[2]
$9 = 0
(gdb) xtype
Lisp_Symbol
(gdb) xsymbol
$10 = (struct Lisp_Symbol *) 0xcd0b90
"nil"
(gdb) p internal_args[3]
$11 = 0
(gdb) p internal_args[4]
$12 = 44448
(gdb)
In GNU Emacs 25.0.92.1 (x86_64-unknown-linux-gnu, X toolkit, Xaw3d scroll bars)
of 2016-04-08 built on just-testing.permabit.com
Repository revision: 5725167b6826e2b3892297367368c50468cea83e
Windowing system distributor 'The X.Org Foundation', version 11.0.11103000
System Description: Ubuntu 12.04.5 LTS
Configured using:
'configure
--prefix=/permabit/user/raeburn/dev/emacs/emacs-25/lx/Inst-5725167
--with-x-toolkit=lucid --enable-checking CPPFLAGS=-DMARKER_DEBUG
--without-sound'
Configured features:
XAW3D XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK DBUS GSETTINGS NOTIFY ACL
LIBSELINUX GNUTLS LIBXML2 FREETYPE XFT ZLIB TOOLKIT_SCROLL_BARS LUCID
X11
Important settings:
locale-coding-system: nil
Major mode: Lisp Interaction
Minor modes in effect:
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rcirc-track-minor-mode: t
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line-number-mode: t
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Recent messages:
Mark saved where search started
Mark set
Mark saved where search started
Mark set
jwiele <at> chat.permabit.com is now Away
Mark saved where search started
Quit
Mark saved where search started
Mark set
jwiele <at> chat.permabit.com is now Online
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bug-gnu-emacs <at> gnu.org:bug#23397; Package emacs.
(Mon, 02 May 2016 16:49:02 GMT) Full text and rfc822 format available.Message #8 received at 23397 <at> debbugs.gnu.org (full text, mbox):
From: Eli Zaretskii <eliz <at> gnu.org> To: Ken Raeburn <raeburn <at> permabit.com> Cc: 23397 <at> debbugs.gnu.org Subject: Re: bug#23397: 25.0.92; assertion failure auto-reverting a file being overwritten Date: Mon, 02 May 2016 19:47:57 +0300
> From: Ken Raeburn <raeburn <at> permabit.com> > Date: Thu, 28 Apr 2016 18:05:29 -0400 > > I'm running the emacs-25 branch as of revision a1f221b, but with commit > d82f24b reverted (attempting to debug #23013), and built with > MARKER_DEBUG enabled (as Eli pointed out, probably not relevant to > #23013) along with assertions. > > I was using "git" to update a source tree while about twenty files from > it were loaded into Emacs buffers. Auto-revert was triggered; during the > process, Finsert_file_contents was loading a Perl file when it invoked > BYTE_TO_CHAR: > > /* Don't try to reuse the same piece of text twice. */ > overlap = (same_at_start - BEGV_BYTE > - (same_at_end > + (! NILP (end) ? end_offset : st.st_size) - ZV_BYTE)); > if (overlap > 0) > same_at_end += overlap; > same_at_end_charpos = BYTE_TO_CHAR (same_at_end); > > ...with same_at_end well out of range (Z_BYTE=12451, same_at_end=24673). > The reverting appears to have happened while the file was in the process > of being updated, as st.st_size is zero. So you are saying that the file's contents was updated between the time we called 'fstat' at the beginning of the function and the time we used st.st_size in the above snippet? If so, perhaps we should call 'fstat' again each time we want to use st.st_size, and retry from the beginning if we find a mismatch? > I haven't managed to reproduce this so far. You could artificially modify the value of st.st_size in the debugger, and then see what happens. Thanks.
bug-gnu-emacs <at> gnu.org:bug#23397; Package emacs.
(Mon, 02 May 2016 20:44:01 GMT) Full text and rfc822 format available.Message #11 received at 23397 <at> debbugs.gnu.org (full text, mbox):
From: Ken Raeburn <raeburn <at> permabit.com> To: Eli Zaretskii <eliz <at> gnu.org> Cc: 23397 <at> debbugs.gnu.org Subject: Re: bug#23397: 25.0.92; assertion failure auto-reverting a file being overwritten Date: Mon, 02 May 2016 16:43:12 -0400
Eli Zaretskii <eliz <at> gnu.org> writes: > So you are saying that the file's contents was updated between the > time we called 'fstat' at the beginning of the function and the time > we used st.st_size in the above snippet? That's my guess. Or, more specifically, between the fstat and attempting to go ahead and read data anyway. But I did a few experiments with truncating the file and using a breakpoint after the fstat to stall Emacs while I restored the file (so the size appeared to be zero but all the data was readable), and nothing interesting happened. That part of the function seems to be trying to figure out if some of the beginning and end of the file are unchanged from before, so I think maybe it also requires having some part in the middle changed, or one version of the file being shorter than the other. I'll run a few more experiments today to see. > If so, perhaps we should call 'fstat' again each time we want to use > st.st_size, and retry from the beginning if we find a mismatch? If the file is large, and being frequently updated in small increments, that could delay us considerably, as we restart the process multiple times. (Some of the files I use auto-revert mode on are log files in the tens of megabytes. Last I tried, auto-revert-tail-mode didn't cope nicely with the case where the file got truncated and rewritten, so reverting the whole file seems to be the way to go for now.) And if we put a limit on the number of iterations, the last time around we'll still need to get it right. There's code there doing lseek and read calls; we should be able to keep track of the last file position we read from, if that's not already derivable from existing variables visible at that point.
bug-gnu-emacs <at> gnu.org:bug#23397; Package emacs.
(Tue, 03 May 2016 15:16:01 GMT) Full text and rfc822 format available.Message #14 received at 23397 <at> debbugs.gnu.org (full text, mbox):
From: Eli Zaretskii <eliz <at> gnu.org> To: Ken Raeburn <raeburn <at> permabit.com> Cc: 23397 <at> debbugs.gnu.org Subject: Re: bug#23397: 25.0.92; assertion failure auto-reverting a file being overwritten Date: Tue, 03 May 2016 18:15:37 +0300
> From: Ken Raeburn <raeburn <at> permabit.com> > Cc: 23397 <at> debbugs.gnu.org > Date: Mon, 02 May 2016 16:43:12 -0400 > > > If so, perhaps we should call 'fstat' again each time we want to use > > st.st_size, and retry from the beginning if we find a mismatch? > > If the file is large, and being frequently updated in small increments, > that could delay us considerably, as we restart the process multiple > times. That is still better than aborting, right?
bug-gnu-emacs <at> gnu.org:bug#23397; Package emacs.
(Tue, 03 May 2016 21:05:01 GMT) Full text and rfc822 format available.Message #17 received at 23397 <at> debbugs.gnu.org (full text, mbox):
From: Ken Raeburn <raeburn <at> permabit.com> To: Eli Zaretskii <eliz <at> gnu.org> Cc: 23397 <at> debbugs.gnu.org Subject: Re: bug#23397: 25.0.92; assertion failure auto-reverting a file being overwritten Date: Tue, 03 May 2016 17:04:24 -0400
Eli Zaretskii <eliz <at> gnu.org> writes:
> That is still better than aborting, right?
Of course. But it seems to me we should have the information we need to
keep the Emacs processing self-consistent whether we iterate or not.
Other code in the function already clearly expects that the number of
bytes we can read may be different from st_size.
(Arguably, in case we're trying to preserve point or markers in a later
part of the file than might have been rewritten so far, it might be
desirable for insert-file-contents to restart or pause briefly and retry
reading more content if it detects a change, but I think that's mostly a
separate question.)
I've finally reproduced the problem. A key issue was that the whole
block containing the failing code would be skipped by the conditional
below if the coding system were "undecided", which seems to be the norm
in my testing with "emacs -Q", but not in my working environment for
whatever reason; maybe one of the minor modes I've loaded is setting a
more specific coding system.
if (!NILP (replace)
&& BEGV < ZV
&& (NILP (coding_system)
|| ! CODING_REQUIRE_DECODING (&coding)))
If the coding system is "undecided-unix", we enter this block, and I can
get it to blow up.
Recipe:
Get two similar files differing in the middle; I started with emacs-25
charset.h:
cp .../src/charset.h file.h
sed -e 400,499s/a/b/g < file.h > file2.h
Set a breakpoint just after the fstat call in Finsert_file_contents,
run emacs -Q, and read in file.h (continuing whenever the breakpoint is
hit). Turn on auto-revert-mode in the buffer.
Set the coding system with "C-x RET f" to "undecided-unix". That marks
the buffer as modified, so clear that by saving the file.
Copy file2.h over file.h, and when the breakpoint is triggered, change
st.st_size to zero, to simulate rereading before the file overwriting
has finished, and continue. My debugging printfs show that an
out-of-range same_at_end is generated as in my original case:
(gdb) c
Continuing.
Finsert_file_contents:3871: same_at_start=13993 same_at_end=17747
st_size=0 ZV=19498
=> overlap=15743
=> new same_at_end=33490
../../src/marker.c:297: Emacs fatal error: assertion failed: BUF_BEG_BYTE (b) <= bytepos && bytepos <= BUF_Z_BYTE (b)
bug-gnu-emacs <at> gnu.org:bug#23397; Package emacs.
(Sat, 16 Jun 2018 21:46:02 GMT) Full text and rfc822 format available.Message #20 received at 23397 <at> debbugs.gnu.org (full text, mbox):
From: Noam Postavsky <npostavs <at> gmail.com> To: Ken Raeburn <raeburn <at> permabit.com> Cc: Eli Zaretskii <eliz <at> gnu.org>, 23397 <at> debbugs.gnu.org Subject: Re: bug#23397: 25.0.92; assertion failure auto-reverting a file being overwritten Date: Sat, 16 Jun 2018 17:45:36 -0400
found 23397 26.1
tags 23397 + confirmed
quit
Ken Raeburn <raeburn <at> permabit.com> writes:
> There's code there doing lseek and read calls; we should be able to keep
> track of the last file position we read from, if that's not already
> derivable from existing variables visible at that point.
This seems to fix the scenario you gave in #17. I don't quite
understand what the overlap expression is trying to compute though.
--- i/src/fileio.c
+++ w/src/fileio.c
@@ -3849,6 +3849,8 @@ because (1) it preserves some marker positions and (2) it puts less data
goto handled;
}
+ off_t file_end_pos = st.st_size;
+
/* Count how many chars at the end of the file
match the text at the end of the buffer. But, if we have
already found that decoding is necessary, don't waste time. */
@@ -3879,6 +3881,8 @@ because (1) it preserves some marker positions and (2) it puts less data
total_read += nread;
}
+ file_end_pos = max (curpos - trial + total_read, file_end_pos);
+
/* Scan this bufferful from the end, comparing with
the Emacs buffer. */
bufpos = total_read;
@@ -3931,7 +3935,7 @@ because (1) it preserves some marker positions and (2) it puts less data
/* Don't try to reuse the same piece of text twice. */
overlap = (same_at_start - BEGV_BYTE
- (same_at_end
- + (! NILP (end) ? end_offset : st.st_size) - ZV_BYTE));
+ + (! NILP (end) ? end_offset : file_end_pos) - ZV_BYTE));
if (overlap > 0)
same_at_end += overlap;
same_at_end_charpos = BYTE_TO_CHAR (same_at_end);
Noam Postavsky <npostavs <at> gmail.com>
to control <at> debbugs.gnu.org.
(Sat, 16 Jun 2018 21:46:02 GMT) Full text and rfc822 format available.Noam Postavsky <npostavs <at> gmail.com>
to control <at> debbugs.gnu.org.
(Sat, 16 Jun 2018 21:46:02 GMT) Full text and rfc822 format available.bug-gnu-emacs <at> gnu.org:bug#23397; Package emacs.
(Sun, 17 Jun 2018 05:37:01 GMT) Full text and rfc822 format available.Message #27 received at 23397 <at> debbugs.gnu.org (full text, mbox):
From: Eli Zaretskii <eliz <at> gnu.org> To: Noam Postavsky <npostavs <at> gmail.com> Cc: raeburn <at> permabit.com, 23397 <at> debbugs.gnu.org Subject: Re: bug#23397: 25.0.92; assertion failure auto-reverting a file being overwritten Date: Sun, 17 Jun 2018 08:36:35 +0300
> From: Noam Postavsky <npostavs <at> gmail.com> > Cc: Eli Zaretskii <eliz <at> gnu.org>, 23397 <at> debbugs.gnu.org > Date: Sat, 16 Jun 2018 17:45:36 -0400 > > I don't quite understand what the overlap expression is trying to > compute though. It prevents us from re-using the same portion of buffer text for matching both at start and at end of the file. This could happen, e.g., with buffers whose contents is the same character, and a file whose contents is mostly the same, but larger, and with a few different characters in the middle. Then the "same_at_end" loop could inadvertently match a part of the buffer that was already matched by the "same_at_start" loop. The overlap expression computes the portion of the buffer that was matched by both "same_at_start" and "same_at_end" loops.
bug-gnu-emacs <at> gnu.org:bug#23397; Package emacs.
(Sat, 05 Sep 2020 14:05:02 GMT) Full text and rfc822 format available.Message #30 received at 23397 <at> debbugs.gnu.org (full text, mbox):
From: Lars Ingebrigtsen <larsi <at> gnus.org> To: Noam Postavsky <npostavs <at> gmail.com> Cc: Ken Raeburn <raeburn <at> permabit.com>, Eli Zaretskii <eliz <at> gnu.org>, 23397 <at> debbugs.gnu.org Subject: Re: bug#23397: 25.0.92; assertion failure auto-reverting a file being overwritten Date: Sat, 05 Sep 2020 16:03:54 +0200
Noam Postavsky <npostavs <at> gmail.com> writes: > This seems to fix the scenario you gave in #17. I don't quite > understand what the overlap expression is trying to compute though. [...] > + off_t file_end_pos = st.st_size; [etc] Eli Zaretskii <eliz <at> gnu.org> writes: >> I don't quite understand what the overlap expression is trying to >> compute though. > > It prevents us from re-using the same portion of buffer text for > matching both at start and at end of the file. This could happen, > e.g., with buffers whose contents is the same character, and a file > whose contents is mostly the same, but larger, and with a few > different characters in the middle. Then the "same_at_end" loop could > inadvertently match a part of the buffer that was already matched by > the "same_at_start" loop. > > The overlap expression computes the portion of the buffer that was > matched by both "same_at_start" and "same_at_end" loops. This was two years ago, but the patch doesn't seem to be applied? It was a rather obscure timing-related (but serious) bug. Noam, did Eli's explanation help? -- (domestic pets only, the antidote for overdose, milk.) bloggy blog: http://lars.ingebrigtsen.no
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