bug#21031: 25.0.50; emacs_backtrace.txt

bug#21031: 25.0.50; emacs_backtrace.txt

[Drew Adams]

Crash from emacs -Q.  This is the contents of emacs_backtrace.txt:


Exception 0xc0000005 at this address:
01174719

Backtrace:
011ae147


In GNU Emacs 25.0.50.1 (i686-pc-mingw32)
 of 2015-07-03 on LEG570
Repository revision: 2b848fadd51e805b2f46da64c5958ea7f009048a
Windowing system distributor `Microsoft Corp.', version 6.1.7601
Configured using:
 `configure --host=i686-pc-mingw32 --enable-checking=yes,glyphs'

Configured features:
XPM JPEG TIFF GIF PNG RSVG SOUND NOTIFY ACL GNUTLS LIBXML2 ZLIB
TOOLKIT_SCROLL_BARS

Important settings:
  value of $LANG: ENU
  locale-coding-system: cp1252

Major mode: Text

Minor modes in effect:
  tooltip-mode: t
  global-eldoc-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
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.

Load-path shadows:
None found.

Features:
(shadow sort gnus-util mail-extr emacsbug message format-spec rfc822 mml
easymenu mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231
mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums
mm-util help-fns mail-prsvr mail-utils dired time-date mule-util tooltip
eldoc electric uniquify ediff-hook vc-hooks lisp-float-type mwheel
dos-w32 ls-lisp disp-table w32-win w32-vars term/common-win tool-bar dnd
fontset image regexp-opt fringe tabulated-list newcomment elisp-mode
lisp-mode prog-mode register page menu-bar rfn-eshadow timer select
scroll-bar mouse jit-lock font-lock syntax facemenu font-core frame
cl-generic 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 charscript
case-table epa-hook jka-cmpr-hook help simple abbrev minibuffer
cl-preloaded nadvice loaddefs button faces cus-face macroexp files
text-properties overlay sha1 md5 base64 format env code-pages mule
custom widget hashtable-print-readable backquote w32notify w32 multi-tty
make-network-process emacs)

Memory information:
((conses 8 155129 8718)
 (symbols 32 18567 0)
 (miscs 32 49 139)
 (strings 16 13157 4420)
 (string-bytes 1 338834)
 (vectors 8 10033)
 (vector-slots 4 402568 4416)
 (floats 8 119 240)
 (intervals 28 28805 5714)
 (buffers 516 13))

bug#21031: 25.0.50; emacs_backtrace.txt

[Eli Zaretskii]

> Date: Fri, 10 Jul 2015 12:14:03 -0700 (PDT)
> From: Drew Adams <drew.adams@oracle.com>
> 
> Crash from emacs -Q.  This is the contents of emacs_backtrace.txt:
> 
> 
> Exception 0xc0000005 at this address:
> 01174719
> 
> Backtrace:
> 011ae147
> 
> 
> In GNU Emacs 25.0.50.1 (i686-pc-mingw32)
>  of 2015-07-03 on LEG570
> Repository revision: 2b848fadd51e805b2f46da64c5958ea7f009048a

Thanks, but I cannot do anything with this data, because the binary
you downloaded was stripped of all symbols (something I won't expect
to see in snapshots).

Perhaps Dani can provide the output of addr2line for this backtrace.
Failing that, this data is useless.

bug#21031: 25.0.50; emacs_backtrace.txt

[Dani Moncayo]

On Fri, Jul 10, 2015 at 10:00 PM, Eli Zaretskii <eliz@gnu.org> wrote:
>> Date: Fri, 10 Jul 2015 12:14:03 -0700 (PDT)
>> From: Drew Adams <drew.adams@oracle.com>
>>
>> Crash from emacs -Q.  This is the contents of emacs_backtrace.txt:
>>
>>
>> Exception 0xc0000005 at this address:
>> 01174719
>>
>> Backtrace:
>> 011ae147
>>
>>
>> In GNU Emacs 25.0.50.1 (i686-pc-mingw32)
>>  of 2015-07-03 on LEG570
>> Repository revision: 2b848fadd51e805b2f46da64c5958ea7f009048a
>
> Thanks, but I cannot do anything with this data, because the binary
> you downloaded was stripped of all symbols (something I won't expect
> to see in snapshots).
>
> Perhaps Dani can provide the output of addr2line for this backtrace.
> Failing that, this data is useless.

??
??:0
Fbackward_prefix_chars at syntax.c:3047
??
??:0
??
??:0
w32_backtrace at w32fns.c:8768



-- 
Dani Moncayo

bug#21031: 25.0.50; emacs_backtrace.txt

[Eli Zaretskii]

> Date: Sat, 11 Jul 2015 00:47:48 +0200
> From: Dani Moncayo <dmoncayo@gmail.com>
> Cc: Drew Adams <drew.adams@oracle.com>, 21031@debbugs.gnu.org
> 
> On Fri, Jul 10, 2015 at 10:00 PM, Eli Zaretskii <eliz@gnu.org> wrote:
> >> Date: Fri, 10 Jul 2015 12:14:03 -0700 (PDT)
> >> From: Drew Adams <drew.adams@oracle.com>
> >>
> >> Crash from emacs -Q.  This is the contents of emacs_backtrace.txt:
> >>
> >>
> >> Exception 0xc0000005 at this address:
> >> 01174719
> >>
> >> Backtrace:
> >> 011ae147
> >>
> >>
> >> In GNU Emacs 25.0.50.1 (i686-pc-mingw32)
> >>  of 2015-07-03 on LEG570
> >> Repository revision: 2b848fadd51e805b2f46da64c5958ea7f009048a
> >
> > Thanks, but I cannot do anything with this data, because the binary
> > you downloaded was stripped of all symbols (something I won't expect
> > to see in snapshots).
> >
> > Perhaps Dani can provide the output of addr2line for this backtrace.
> > Failing that, this data is useless.
> 
> ??
> ??:0
> Fbackward_prefix_chars at syntax.c:3047

Thanks.  This is here:

  while (!char_quoted (pos, pos_byte)
	 /* Previous statement updates syntax table.  */
	 && ((c = FETCH_CHAR_AS_MULTIBYTE (pos_byte), SYNTAX (c) == Squote)
	     || syntax_prefix_flag_p (c)))
    {
      opoint = pos;
      opoint_byte = pos_byte;

      if (pos + 1 > beg)
	DEC_BOTH (pos, pos_byte);  <<<<<<<<<<<<<<<<<<<<<
    }

I don't see how could that crash.  Anyone?

bug#21031: 25.0.50; emacs_backtrace.txt

[Glenn Morris]

Eli Zaretskii wrote:

> Thanks, but I cannot do anything with this data, because the binary
> you downloaded was stripped of all symbols (something I won't expect
> to see in snapshots).

We've got 40 of these reports now. Personally I don't expect any of them
to ever go anywhere (even the ones that weren't stripped).

bug#21031:

[Glenn Morris]

Nothing can be done with this information.