Package: emacs;
Reported by: Eli Zaretskii <eliz <at> gnu.org>
Date: Sun, 15 Oct 2017 16:09:01 UTC
Severity: normal
Found in versions 27.0.50, 26.0.90
Done: Alan Mackenzie <acm <at> muc.de>
Bug is archived. No further changes may be made.
Message #70 received at 28850 <at> debbugs.gnu.org (full text, mbox):
From: Eli Zaretskii <eliz <at> gnu.org> To: acm <at> muc.de Cc: contovob <at> tcd.ie, 28850 <at> debbugs.gnu.org Subject: Re: bug#28850: 26.0.90; Error running timer 'jit-lock-stealth-fontify': (error "Invalid search bound (wrong side of point)") Date: Wed, 01 May 2019 21:49:07 +0300
> Date: Tue, 30 Apr 2019 18:26:26 +0300
> From: Eli Zaretskii <eliz <at> gnu.org>
> Cc: acm <at> muc.de, 28850 <at> debbugs.gnu.org
>
> FWIW, I think I see something similar in Emacs 26.2, I will try to
> catch it one of these days.
Done. The error messages are slightly different: wrong-type-argument
number-or-marker-p nil.
It was very hard to debug, but eventually I succeeded to catch a
backtrace:
Thread 1 hit Breakpoint 5, wrong_type_argument (predicate=XIL(0x9f90),
value=XIL(0)) at data.c:146
146 {
#0 wrong_type_argument (predicate=XIL(0x9f90), value=XIL(0)) at data.c:146
#1 0x01127519 in CHECK_TYPE (x=XIL(0), predicate=<optimized out>, ok=0)
at lisp.h:625
#2 Fadd1 (number=XIL(0)) at data.c:3125
#3 0x011429ba in eval_sub (form=XIL(0xc000000018bb6b60)) at eval.c:2241
#4 0x01142768 in eval_sub (form=XIL(0xc000000018bb6b40)) at eval.c:2229
#5 0x01142ee0 in Fprogn (body=<optimized out>) at eval.c:459
#6 0x0113af02 in Fsave_excursion (args=XIL(0xc000000018bb6af0))
at editfns.c:1050
#7 0x01142a9a in eval_sub (form=XIL(0xc000000018bb6b20)) at eval.c:2193
#8 0x0114300b in Fprogn (body=<optimized out>) at eval.c:459
#9 Fcond (args=<optimized out>) at eval.c:439
#10 0x01142a9a in eval_sub (form=XIL(0xc000000018bb6950)) at eval.c:2193
#11 0x01146b24 in Fsetq (args=XIL(0xc000000018bb6930)) at eval.c:517
#12 0x01142a9a in eval_sub (form=XIL(0xc000000018bb6940)) at eval.c:2193
#13 0x01147612 in Fprogn (body=<optimized out>) at eval.c:459
#14 Flet (args=<optimized out>) at eval.c:973
#15 0x01142a9a in eval_sub (form=XIL(0xc000000018bb66d0)) at eval.c:2193
#16 0x01142f53 in Fprogn (body=<optimized out>) at eval.c:459
#17 Fif (args=XIL(0xc000000018b9ff50)) at eval.c:415
#18 0x01142a9a in eval_sub (form=XIL(0xc000000018b9ffa0)) at eval.c:2193
#19 0x01142ee0 in Fprogn (body=<optimized out>) at eval.c:459
#20 0x01141574 in internal_catch (tag=XIL(0x809f040),
func=func <at> entry=0x1142eb2 <Fprogn>, arg=XIL(0xc000000018ba0490))
at eval.c:1101
#21 0x0114782a in Fcatch (args=XIL(0xc000000018ba04e0)) at eval.c:1078
#22 0x01142a9a in eval_sub (form=XIL(0xc000000018ba04f0)) at eval.c:2193
#23 0x011477e1 in Fwhile (args=XIL(0xc000000018b1c810)) at eval.c:989
#24 0x01142a9a in eval_sub (form=XIL(0xc000000018b1c840)) at eval.c:2193
#25 0x01142f53 in Fprogn (body=<optimized out>) at eval.c:459
#26 Fif (args=XIL(0xc000000018b7a4b0)) at eval.c:415
#27 0x01142a9a in eval_sub (form=XIL(0xc000000018b7a4c0)) at eval.c:2193
#28 0x01142ee0 in Fprogn (body=<optimized out>) at eval.c:459
#29 0x0113dc1a in Fsave_restriction (body=XIL(0xc000000018bb5160))
at editfns.c:3990
#30 0x01142a9a in eval_sub (form=XIL(0xc000000018bb5170)) at eval.c:2193
#31 0x01147612 in Fprogn (body=<optimized out>) at eval.c:459
#32 Flet (args=<optimized out>) at eval.c:973
#33 0x01142a9a in eval_sub (form=XIL(0xc000000018625d50)) at eval.c:2193
#34 0x0114345d in Fprogn (body=<optimized out>) at eval.c:459
#35 funcall_lambda (fun=XIL(0xc000000018625d40), nargs=nargs <at> entry=3,
arg_vector=arg_vector <at> entry=0x88bbf0) at eval.c:3052
#36 0x0114215a in apply_lambda (fun=<optimized out>, args=<optimized out>,
count=<optimized out>, count <at> entry=84) at eval.c:2913
#37 0x0114263a in eval_sub (form=XIL(0xc00000001c7bd2b0)) at eval.c:2316
#38 0x01146b24 in Fsetq (args=XIL(0xc00000001c7bd2c0)) at eval.c:517
#39 0x01142a9a in eval_sub (form=XIL(0xc00000001c7bd2d0)) at eval.c:2193
#40 0x01142768 in eval_sub (form=XIL(0xc00000001c7bd2e0)) at eval.c:2229
#41 0x01142768 in eval_sub (form=XIL(0xc00000001c7bd2f0)) at eval.c:2229
#42 0x01142e9e in Fand (args=<optimized out>) at eval.c:393
#43 0x01142a9a in eval_sub (form=XIL(0xc00000001c7c5550)) at eval.c:2193
#44 0x011477e1 in Fwhile (args=XIL(0xc00000001c7c5380)) at eval.c:989
#45 0x01142a9a in eval_sub (form=XIL(0xc00000001c7c5390)) at eval.c:2193
#46 0x01147612 in Fprogn (body=<optimized out>) at eval.c:459
#47 Flet (args=<optimized out>) at eval.c:973
#48 0x01142a9a in eval_sub (form=XIL(0xc00000001c7c52c0)) at eval.c:2193
#49 0x01147233 in Fprogn (body=<optimized out>) at eval.c:459
#50 FletX (args=XIL(0xc00000001c7c3ed0)) at eval.c:904
#51 0x01142a9a in eval_sub (form=XIL(0xc00000001c7c3ec0)) at eval.c:2193
#52 0x01142ee0 in Fprogn (body=<optimized out>) at eval.c:459
#53 0x01141574 in internal_catch (tag=XIL(0xfeb19468),
func=func <at> entry=0x1142eb2 <Fprogn>, arg=XIL(0xc00000001c7c3e90))
at eval.c:1101
#54 0x0114782a in Fcatch (args=XIL(0xc00000001c7c3ea0)) at eval.c:1078
#55 0x01142a9a in eval_sub (form=XIL(0xc00000001c7c3eb0)) at eval.c:2193
#56 0x0114345d in Fprogn (body=<optimized out>) at eval.c:459
#57 funcall_lambda (fun=XIL(0xc00000001c7c3e80), nargs=nargs <at> entry=1,
arg_vector=arg_vector <at> entry=0x88c810) at eval.c:3052
#58 0x011437c9 in Ffuncall (nargs=2, args=args <at> entry=0x88c808) at eval.c:2790
#59 0x01189680 in exec_byte_code (bytestr=<optimized out>,
vector=<optimized out>, maxdepth=<optimized out>,
args_template=<optimized out>, nargs=<optimized out>, nargs <at> entry=0,
args=<optimized out>, args <at> entry=0x0) at bytecode.c:630
#60 0x01143291 in funcall_lambda (fun=XIL(0xa00000000adfab48),
nargs=nargs <at> entry=1, arg_vector=arg_vector <at> entry=0x88cb00) at eval.c:3059
#61 0x011437c9 in Ffuncall (nargs=2, args=args <at> entry=0x88caf8) at eval.c:2790
#62 0x01189680 in exec_byte_code (bytestr=<optimized out>,
vector=<optimized out>, maxdepth=<optimized out>,
args_template=<optimized out>, nargs=<optimized out>, nargs <at> entry=0,
args=<optimized out>, args <at> entry=0x0) at bytecode.c:630
#63 0x01143291 in funcall_lambda (fun=XIL(0xa000000001324700),
nargs=nargs <at> entry=3, arg_vector=arg_vector <at> entry=0x88d0c0) at eval.c:3059
#64 0x011437c9 in Ffuncall (nargs=4, args=args <at> entry=0x88d0b8) at eval.c:2790
#65 0x01189680 in exec_byte_code (bytestr=<optimized out>,
vector=<optimized out>, maxdepth=<optimized out>,
args_template=<optimized out>, nargs=<optimized out>, nargs <at> entry=0,
args=<optimized out>, args <at> entry=0x0) at bytecode.c:630
#66 0x01143291 in funcall_lambda (fun=XIL(0xa000000001323638),
nargs=nargs <at> entry=3, arg_vector=arg_vector <at> entry=0x88d410) at eval.c:3059
#67 0x011437c9 in Ffuncall (nargs=4, args=args <at> entry=0x88d408) at eval.c:2790
#68 0x01189680 in exec_byte_code (bytestr=<optimized out>,
vector=<optimized out>, maxdepth=<optimized out>,
args_template=<optimized out>, nargs=<optimized out>, nargs <at> entry=0,
args=<optimized out>, args <at> entry=0x0) at bytecode.c:630
#69 0x01143291 in funcall_lambda (fun=XIL(0xa00000000ae74d20),
nargs=nargs <at> entry=3, arg_vector=arg_vector <at> entry=0x88d740) at eval.c:3059
#70 0x011437c9 in Ffuncall (nargs=4, args=args <at> entry=0x88d738) at eval.c:2790
#71 0x01189680 in exec_byte_code (bytestr=<optimized out>,
vector=<optimized out>, maxdepth=<optimized out>,
args_template=<optimized out>, nargs=<optimized out>, nargs <at> entry=0,
args=<optimized out>, args <at> entry=0x0) at bytecode.c:630
#72 0x01143291 in funcall_lambda (fun=XIL(0xa000000001323038),
nargs=nargs <at> entry=2, arg_vector=arg_vector <at> entry=0x88d9e8) at eval.c:3059
#73 0x011437c9 in Ffuncall (nargs=3, args=args <at> entry=0x88d9e0) at eval.c:2790
#74 0x01189680 in exec_byte_code (bytestr=<optimized out>,
vector=<optimized out>, maxdepth=<optimized out>,
args_template=<optimized out>, nargs=<optimized out>, nargs <at> entry=1,
args=<optimized out>, args <at> entry=0x88de08) at bytecode.c:630
#75 0x011433ec in funcall_lambda (fun=<optimized out>, nargs=nargs <at> entry=1,
arg_vector=arg_vector <at> entry=0x88de08) at eval.c:2977
#76 0x011437c9 in Ffuncall (nargs=nargs <at> entry=2, args=args <at> entry=0x88de00)
at eval.c:2790
#77 0x0114393e in run_hook_wrapped_funcall (nargs=nargs <at> entry=2,
args=args <at> entry=0x88de00) at eval.c:2503
#78 0x01141a36 in run_hook_with_args (nargs=2, args=0x88de00,
funcall=0x114390e <run_hook_wrapped_funcall>) at eval.c:2584
#79 0x0114389b in Ffuncall (nargs=3, args=args <at> entry=0x88ddf8) at eval.c:2776
#80 0x01189680 in exec_byte_code (bytestr=<optimized out>,
vector=<optimized out>, maxdepth=<optimized out>,
args_template=<optimized out>, nargs=<optimized out>, nargs <at> entry=2,
args=<optimized out>, args <at> entry=0x88e150) at bytecode.c:630
#81 0x011433ec in funcall_lambda (fun=<optimized out>, nargs=nargs <at> entry=2,
arg_vector=arg_vector <at> entry=0x88e150) at eval.c:2977
#82 0x011437c9 in Ffuncall (nargs=3, args=args <at> entry=0x88e148) at eval.c:2790
#83 0x01189680 in exec_byte_code (bytestr=<optimized out>,
vector=<optimized out>, maxdepth=<optimized out>,
args_template=<optimized out>, nargs=<optimized out>, nargs <at> entry=2,
args=<optimized out>, args <at> entry=0x88e5b0) at bytecode.c:630
#84 0x011433ec in funcall_lambda (fun=<optimized out>, nargs=nargs <at> entry=2,
arg_vector=arg_vector <at> entry=0x88e5b0) at eval.c:2977
#85 0x011437c9 in Ffuncall (nargs=3, args=args <at> entry=0x88e5a8) at eval.c:2790
#86 0x01189680 in exec_byte_code (bytestr=<optimized out>,
vector=<optimized out>, maxdepth=<optimized out>,
args_template=<optimized out>, nargs=<optimized out>, nargs <at> entry=1,
args=<optimized out>, args <at> entry=0x88ea60) at bytecode.c:630
#87 0x011433ec in funcall_lambda (fun=<optimized out>, nargs=nargs <at> entry=1,
arg_vector=arg_vector <at> entry=0x88ea60) at eval.c:2977
#88 0x011437c9 in Ffuncall (nargs=nargs <at> entry=2, args=args <at> entry=0x88ea58)
at eval.c:2790
#89 0x01145d67 in Fapply (nargs=2, args=0x88ea58) at eval.c:2353
#90 0x0114389b in Ffuncall (nargs=3, args=args <at> entry=0x88ea50) at eval.c:2776
#91 0x01189680 in exec_byte_code (bytestr=<optimized out>,
vector=<optimized out>, maxdepth=<optimized out>,
args_template=<optimized out>, nargs=<optimized out>, nargs <at> entry=1,
args=<optimized out>, args <at> entry=0x88eda8) at bytecode.c:630
#92 0x011433ec in funcall_lambda (fun=<optimized out>, nargs=nargs <at> entry=1,
arg_vector=arg_vector <at> entry=0x88eda8) at eval.c:2977
#93 0x011437c9 in Ffuncall (nargs=nargs <at> entry=2, args=args <at> entry=0x88eda0)
at eval.c:2790
#94 0x011439c7 in call1 (fn=XIL(0xcfc0), arg1=XIL(0xa00000000ae3af70))
at eval.c:2627
#95 0x010bfe7c in timer_check_2 (idle_timers=<optimized out>,
timers=<optimized out>) at keyboard.c:4472
#96 timer_check () at keyboard.c:4534
#97 0x010c04a1 in readable_events (flags=flags <at> entry=1) at keyboard.c:3349
#98 0x010c0e98 in get_input_pending (flags=flags <at> entry=1) at keyboard.c:6841
#99 0x010c3a53 in detect_input_pending_run_timers (
do_display=do_display <at> entry=true) at keyboard.c:9961
#100 0x01195175 in wait_reading_process_output (time_limit=<optimized out>,
nsecs=nsecs <at> entry=0, read_kbd=-1, do_display=do_display <at> entry=true,
wait_for_cell=XIL(0), wait_proc=wait_proc <at> entry=0x0,
just_wait_proc=just_wait_proc <at> entry=0) at process.c:5531
#101 0x0100a69e in sit_for (timeout=make_number(22),
reading=reading <at> entry=true, display_option=display_option <at> entry=1)
at dispnew.c:5805
#102 0x010c6c8c in read_char (commandflag=<optimized out>,
commandflag <at> entry=1, map=<optimized out>, prev_event=<optimized out>,
used_mouse_menu=<optimized out>, used_mouse_menu <at> entry=0x88f743,
end_time=<optimized out>, end_time <at> entry=0x0) at keyboard.c:2723
#103 0x010c8303 in read_key_sequence (keybuf=keybuf <at> entry=0x88f850,
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:9157
#104 0x010ca3e4 in command_loop_1 () at keyboard.c:1368
#105 0x011415d2 in internal_condition_case (
bfun=bfun <at> entry=0x10ca155 <command_loop_1>, handlers=XIL(0x4e90),
hfun=hfun <at> entry=0x10bf040 <cmd_error>) at eval.c:1336
#106 0x010b82a3 in command_loop_2 (ignore=XIL(0)) at keyboard.c:1110
#107 0x01141574 in internal_catch (tag=XIL(0xd290),
func=func <at> entry=0x10b827c <command_loop_2>, arg=XIL(0)) at eval.c:1101
#108 0x010b824b in command_loop () at keyboard.c:1089
#109 0x010bec14 in recursive_edit_1 () at keyboard.c:695
#110 0x010bef02 in Frecursive_edit () at keyboard.c:766
#111 0x01233073 in main (argc=<optimized out>, argv=<optimized out>)
at emacs.c:1722
Lisp Backtrace:
"1+" (0x88acd0)
"goto-char" (0x88adb8)
"save-excursion" (0x88aee8)
"cond" (0x88aff8)
"setq" (0x88b138)
"let" (0x88b2b8)
"if" (0x88b3d8)
"catch" (0x88b548)
"while" (0x88b668)
"if" (0x88b788)
"save-restriction" (0x88b8b8)
"let" (0x88baf8)
"c-beginning-of-statement-1" (0x88bbf0)
"setq" (0x88be48)
"eq" (0x88bf38)
"not" (0x88c028)
"and" (0x88c138)
"while" (0x88c258)
"let" (0x88c3d8)
"let*" (0x88c528)
"catch" (0x88c698)
"c-beginning-of-decl-1" (0x88c810)
0xadfab48 PVEC_COMPILED
"font-lock-fontify-keywords-region" (0x88d0c0)
"font-lock-default-fontify-region" (0x88d410)
"c-font-lock-fontify-region" (0x88d740)
"font-lock-fontify-region" (0x88d9e8)
0x18b47060 PVEC_COMPILED
"run-hook-wrapped" (0x88de00)
"jit-lock--run-functions" (0x88e150)
"jit-lock-fontify-now" (0x88e5b0)
"jit-lock-stealth-fontify" (0x88ea60)
"apply" (0x88ea58)
"timer-event-handler" (0x88eda8)
This comes from the following code fragment:
(defun c-beginning-of-statement-1 (&optional lim ignore-labels
noerror comma-delim)
[...]
;; Just gone back over some paren block?
((looking-at "\\s(")
(save-excursion
(goto-char (1+ (c-down-list-backward
before-sws-pos)))
(c-crosses-statement-barrier-p
(point) maybe-after-boundary-pos)))
c-down-list-backward is documented to be able to return nil, so
passing the result to 1+ is unsafe.
I cannot claim a good understanding of the code, but the following
ad-hoc patch fixes the problem for me:
--- lisp/progmodes/cc-engine.el~0 2019-01-07 16:26:06.000000000 +0200
+++ lisp/progmodes/cc-engine.el 2019-05-01 14:43:35.823456200 +0300
@@ -1130,10 +1130,12 @@
;; Just gone back over some paren block?
((looking-at "\\s(")
(save-excursion
- (goto-char (1+ (c-down-list-backward
- before-sws-pos)))
- (c-crosses-statement-barrier-p
- (point) maybe-after-boundary-pos)))
+ (let ((pos1 (c-down-list-backward
+ before-sws-pos)))
+ (when (number-or-marker-p pos1)
+ (goto-char (1+ pos1))
+ (c-crosses-statement-barrier-p
+ (point) maybe-after-boundary-pos)))))
;; Just gone back over an ordinary symbol of some sort?
(t (c-crosses-statement-barrier-p
(point) maybe-after-boundary-pos))))
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Copyright (C) 1999 Darren O. Benham,
1997,2003 nCipher Corporation Ltd,
1994-97 Ian Jackson.