Package: emacs;
Reported by: aidalgol <at> amuri.net
Date: Thu, 15 May 2014 03:43:01 UTC
Severity: normal
Tags: moreinfo
Done: Lars Ingebrigtsen <larsi <at> gnus.org>
Bug is archived. No further changes may be made.
View this message in rfc822 format
From: aidalgol <at> amuri.net To: 17496 <at> debbugs.gnu.org Subject: bug#17496: frequent crashing on cygwin Date: Thu, 15 May 2014 15:29:30 +1200
With 24.3.1 on Cygwin x64 built with NT widgets, I am getting frequent
crashes, at least once a day. I get the "Emacs Abort Dialog" asking me
whether I want to attach GDB. I rebuilt Emacs from trunk, and the
problem persisted. Here is the stack trace after upon attaching (built
from git commit 5289c43e35275b153cd8003f037e67f24bf22d38):
(gdb) where
#0 0x000007fefe193ca3 in KERNELBASE!DebugBreak () from
/cygdrive/c/Windows/system32/KERNELBASE.dll
#1 0x000000010056ec14 in emacs_abort () at w32fns.c:8504
#2 0x0000000100502549 in do_symval_forwarding (valcontents=<optimized
out>) at data.c:970
#3 0x0000000100502611 in swap_in_symval_forwarding (symbol=0x1009c3240
<bss_sbrk_buffer+502944>, blv=blv <at> entry=0x600105540) at data.c:1102
#4 0x0000000100502c76 in find_symbol_value (symbol=<optimized out>) at
data.c:1150
#5 0x0000000100502cbd in Fsymbol_value (symbol=4305203778) at
data.c:1168
#6 0x00000001004c65b8 in set_buffer_internal_1 (b=b <at> entry=0x60075a800)
at buffer.c:2153
#7 0x00000001004c6638 in set_buffer_internal (b=0x60075a800) at
buffer.h:1102
#8 Fset_buffer (buffer_or_name=25777514501) at buffer.c:2199
#9 0x000000010054b1b0 in exec_byte_code (bytestr=6, vector=0,
maxdepth=0, args_template=1028, nargs=33, args=0x71) at bytecode.c:1644
#10 0x0000000100514e38 in funcall_lambda (fun=25893691285,
nargs=nargs <at> entry=1, arg_vector=arg_vector <at> entry=0x227348) at
eval.c:2983
#11 0x000000010051513b in Ffuncall (nargs=nargs <at> entry=2,
args=args <at> entry=0x227340) at eval.c:2876
#12 0x000000010051548d in call1 (fn=fn <at> entry=25893691285,
arg1=<optimized out>) at eval.c:2614
#13 0x000000010051c26d in mapcar1 (leni=leni <at> entry=48,
vals=vals <at> entry=0x2273f0, fn=fn <at> entry=25893691285,
seq=seq <at> entry=25792947446) at fns.c:2333
#14 0x000000010051c74a in Fmapcar (function=25893691285,
sequence=25792947446) at fns.c:2403
#15 0x000000010051532a in Ffuncall (nargs=<optimized out>,
args=<optimized out>) at eval.c:2818
#16 0x000000010054936b in exec_byte_code (bytestr=6, vector=0,
maxdepth=0, args_template=2052, nargs=2258560, args=0x3) at
bytecode.c:916
#17 0x0000000100514e38 in funcall_lambda (fun=25786027141,
nargs=nargs <at> entry=2, arg_vector=arg_vector <at> entry=0x227910) at
eval.c:2983
#18 0x000000010051513b in Ffuncall (nargs=3, args=0x227908) at
eval.c:2876
#19 0x000000010054936b in exec_byte_code (bytestr=6, vector=0,
maxdepth=0, args_template=2048, nargs=2259200, args=0x3) at
bytecode.c:916
#20 0x0000000100514e38 in funcall_lambda (fun=25786027261,
nargs=nargs <at> entry=1, arg_vector=arg_vector <at> entry=0x227b40) at
eval.c:2983
#21 0x000000010051513b in Ffuncall (nargs=2, args=0x227b38) at
eval.c:2876
#22 0x000000010054936b in exec_byte_code (bytestr=6, vector=0,
maxdepth=0, args_template=4304949298, nargs=4304699432, args=0x2) at
bytecode.c:916
#23 0x0000000100514da3 in funcall_lambda (fun=25786149861,
nargs=nargs <at> entry=0, arg_vector=arg_vector <at> entry=0x227d70) at
eval.c:3049
#24 0x000000010051513b in Ffuncall (nargs=1, args=0x227d68) at
eval.c:2876
#25 0x000000010054936b in exec_byte_code (bytestr=6, vector=0,
maxdepth=0, args_template=4304949298, nargs=45, args=0x1) at
bytecode.c:916
#26 0x0000000100514da3 in funcall_lambda (fun=25786150045,
nargs=nargs <at> entry=1, arg_vector=arg_vector <at> entry=0x228118) at
eval.c:3049
#27 0x000000010051513b in Ffuncall (nargs=2, args=0x228110) at
eval.c:2876
#28 0x00000001005153d9 in funcall_nil (nargs=<optimized out>,
args=<optimized out>) at eval.c:2366
#29 0x0000000100513c2b in run_hook_with_args (nargs=2, args=0x228110,
funcall=0x1005153d0 <funcall_nil>) at eval.c:2551
#30 0x0000000100515215 in Ffuncall (nargs=<optimized out>,
args=<optimized out>) at eval.c:2796
#31 0x000000010054936b in exec_byte_code (bytestr=6, vector=0,
maxdepth=0, args_template=4304949298, nargs=49, args=0x3) at
bytecode.c:916
#32 0x0000000100514da3 in funcall_lambda (fun=25785697053,
nargs=nargs <at> entry=2, arg_vector=arg_vector <at> entry=0x228350) at
eval.c:3049
#33 0x000000010051513b in Ffuncall (nargs=3, args=0x228348) at
eval.c:2876
#34 0x000000010054936b in exec_byte_code (bytestr=6, vector=0,
maxdepth=0, args_template=4304949298, nargs=2261824, args=0x3) at
bytecode.c:916
#35 0x0000000100514da3 in funcall_lambda (fun=25785705525,
nargs=nargs <at> entry=2, arg_vector=arg_vector <at> entry=0x228590) at
eval.c:3049
#36 0x000000010051513b in Ffuncall (nargs=3, args=0x228588) at
eval.c:2876
#37 0x000000010054936b in exec_byte_code (bytestr=6, vector=0,
maxdepth=0, args_template=4304949298, nargs=2262408, args=0x3) at
bytecode.c:916
#38 0x0000000100514da3 in funcall_lambda (fun=25785763853,
nargs=nargs <at> entry=2, arg_vector=arg_vector <at> entry=0x2287f0) at
eval.c:3049
#39 0x000000010051513b in Ffuncall (nargs=3, args=0x2287e8) at
eval.c:2876
#40 0x000000010054936b in exec_byte_code (bytestr=6, vector=0,
maxdepth=0, args_template=4304949298, nargs=74, args=0x3) at
bytecode.c:916
#41 0x0000000100514da3 in funcall_lambda (fun=25786079517,
nargs=nargs <at> entry=2, arg_vector=arg_vector <at> entry=0x228a18) at
eval.c:3049
#42 0x000000010051513b in Ffuncall (nargs=nargs <at> entry=3,
args=args <at> entry=0x228a10) at eval.c:2876
#43 0x00000001005165e0 in Fapply (nargs=nargs <at> entry=2,
args=args <at> entry=0x228ad0) at eval.c:2354
#44 0x00000001005167e3 in apply1 (fn=25786223762, arg=<optimized out>)
at eval.c:2588
#45 0x00000001005138a7 in internal_condition_case_1
(bfun=bfun <at> entry=0x10054d150 <read_process_output_call>,
arg=25793585046, handlers=handlers <at> entry=4305007218,
hfun=hfun <at> entry=0x10054d0b0 <read_process_output_error_handler>)
at eval.c:1378
#46 0x000000010054cc81 in read_and_dispose_of_process_output
(coding=<optimized out>, nbytes=61, chars=<optimized out>,
p=0xfffffffffffffffe) at process.c:5178
#47 read_process_output (proc=proc <at> entry=25785763581,
channel=channel <at> entry=9) at process.c:5087
#48 0x000000010055309c in wait_reading_process_output
(time_limit=time_limit <at> entry=0, nsecs=nsecs <at> entry=0,
read_kbd=read_kbd <at> entry=-1, do_display=true,
wait_for_cell=wait_for_cell <at> entry=4304949298,
wait_proc=wait_proc <at> entry=0x0,
just_wait_proc=just_wait_proc <at> entry=0) at process.c:4809
#49 0x00000001004ac00a in kbd_buffer_get_event (end_time=0x0,
used_mouse_menu=<optimized out>, kbp=<synthetic pointer>) at
keyboard.c:3907
#50 read_event_from_main_queue (used_mouse_menu=<optimized out>,
local_getcjmp=<optimized out>, end_time=0x0) at keyboard.c:2246
#51 read_decoded_event_from_main_queue (end_time=end_time <at> entry=0x0,
local_getcjmp=local_getcjmp <at> entry=0x22a290,
prev_event=prev_event <at> entry=4304949298,
used_mouse_menu=used_mouse_menu <at> entry=0x22a5cb) at keyboard.c:2311
#52 0x00000001004b031f in read_char (commandflag=1,
map=map <at> entry=25788761718, prev_event=4304949298,
used_mouse_menu=used_mouse_menu <at> entry=0x22a5cb,
end_time=end_time <at> entry=0x0) at keyboard.c:2897
#53 0x00000001004b126a in read_key_sequence
(keybuf=keybuf <at> entry=0x22a710, prompt=<optimized out>,
dont_downcase_last=dont_downcase_last <at> entry=false,
can_return_switch_frame=can_return_switch_frame <at> entry=true,
fix_current_buffer=fix_current_buffer <at> entry=true,
prevent_redisplay=prevent_redisplay <at> entry=false, bufsize=30) at
keyboard.c:9084
#54 0x00000001004b2ff4 in command_loop_1 () at keyboard.c:1452
#55 0x000000010051376d in internal_condition_case
(bfun=bfun <at> entry=0x1004b2dd0 <command_loop_1>, handlers=<optimized out>,
hfun=hfun <at> entry=0x1004a98e0 <cmd_error>) at eval.c:1354
#56 0x00000001004a4d6a in command_loop_2
(ignore=ignore <at> entry=4304949298) at keyboard.c:1177
#57 0x000000010051366c in internal_catch (tag=4305003410,
func=func <at> entry=0x1004a4d40 <command_loop_2>, arg=4304949298) at
eval.c:1118
#58 0x00000001004a94d4 in command_loop () at keyboard.c:1156
#59 recursive_edit_1 () at keyboard.c:777
#60 0x00000001004a97f6 in Frecursive_edit () at keyboard.c:848
#61 0x00000001005a819e in main (argc=<optimized out>, argv=<optimized
out>) at emacs.c:1654
Lisp Backtrace:
0x7625f90 PVEC_COMPILED
"mapcar" (0x2276a0)
"erc-buffer-filter" (0x227910)
"erc-buffer-list" (0x227b40)
"erc-autoaway-some-open-server-buffer" (0x227d70)
"erc-autoaway-possibly-set-away" (0x228118)
"run-hook-with-args" (0x228110)
"erc-call-hooks" (0x228350)
"erc-handle-parsed-server-response" (0x228590)
"erc-parse-server-response" (0x2287f0)
"erc-server-filter-function" (0x228a18)
And the symbol in frame 5:
(gdb) print 4305203778
$4 = 4305203778
(gdb) xsymbol
$5 = (struct Lisp_Symbol *) 0x1009c3240 <bss_sbrk_buffer+502944>
"change-major-mode-hook"
(gdb) print *$5
$6 = {
gcmarkbit = false,
redirect = SYMBOL_LOCALIZED,
constant = 0,
interned = 2,
declared_special = true,
pinned = true,
name = 4300989913,
val = {
value = 25770874176,
alias = 0x600105540,
blv = 0x600105540,
fwd = 0x600105540
},
function = 4304949298,
plist = 4312576086,
next = 0x100999550 <bss_sbrk_buffer+331696>
}
And 0x600105540 in frame 2:
(gdb) print (struct Lisp_Buffer_Local_Value*) 0x600105540
$11 = (struct Lisp_Buffer_Local_Value *) 0x600105540
(gdb) print *$11
$12 = {
local_if_set = false,
frame_local = false,
found = true,
fwd = 0x10092b8d0 <o_fwd.75565>,
where = 25785328645,
defcell = 4312854374,
valcell = 25787765030
}
(gdb) print $12->fwd
$14 = (union Lisp_Fwd *) 0x10092b8d0 <o_fwd.75565>
(gdb) print *$14
$15 = {
u_intfwd = {
type = Lisp_Fwd_Obj,
intvar = 0x1009471d8 <globals+184>
},
u_boolfwd = {
type = Lisp_Fwd_Obj,
boolvar = 0x1009471d8 <globals+184>
},
u_objfwd = {
type = Lisp_Fwd_Obj,
objvar = 0x1009471d8 <globals+184>
},
u_buffer_objfwd = {
type = Lisp_Fwd_Obj,
offset = 0,
predicate = 4304695768
},
u_kboard_objfwd = {
type = Lisp_Fwd_Obj,
offset = 0
}
}
At Daniel Colascione's suggestion, I will rebuild with optimisations
turned off and try to get more information out of the next crash.
GNU bug tracking system
Copyright (C) 1999 Darren O. Benham,
1997,2003 nCipher Corporation Ltd,
1994-97 Ian Jackson.