GNU bug report logs - #35429
27.0.50; Arbitrary xdisp.c related crashes when working with overlay-using packages

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Package: emacs;

Reported by: Kaushal Modi <kaushal.modi <at> gmail.com>

Date: Thu, 25 Apr 2019 15:38:02 UTC

Severity: normal

Found in version 27.0.50

Done: Kaushal Modi <kaushal.modi <at> gmail.com>

Bug is archived. No further changes may be made.

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From: Kaushal Modi <kaushal.modi <at> gmail.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 35429 <at> debbugs.gnu.org
Subject: bug#35429: 27.0.50; Arbitrary xdisp.c related crashes when working with overlay-using packages
Date: Fri, 26 Apr 2019 14:34:38 -0400

[Message part 1 (text/plain, inline)]
On Fri, Apr 26, 2019 at 2:32 PM Eli Zaretskii <eliz <at> gnu.org> wrote:

> So now what do the following commands tell?
>
>   (gdb) fr 2
>   (gdb) p w->start
>   (gdb) xmarker
>   (gdb) p *$
>

(gdb) fr 2
#2  0x0000000000456b44 in init_iterator (it=it <at> entry=0x7fffffff3040,
w=w <at> entry=0x89da880, charpos=2874,
    bytepos=<optimized out>, row=<optimized out>,
base_face_id=base_face_id <at> entry=DEFAULT_FACE_ID)
    at xdisp.c:3047
3047          eassert (charpos == BYTE_TO_CHAR (bytepos));
(gdb) p w->start
$13 = XIL(0x89daa95)
(gdb) xmarker
$14 = (struct Lisp_Marker *) 0x89daa90
(gdb) p *$
$15 = {
  header = {
    size = 4611686018477740032
  },
  buffer = 0x8d95c10,
  need_adjustment = false,
  insertion_type = false,
  next = 0x89daaf0,
  charpos = 2874,
  bytepos = 2874
}
(gdb)

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This bug report was last modified 6 years and 18 days ago.

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