Crash printing character info TAB character

Crash printing character info TAB character

[Chong Yidong]

On latest trunk, GNU Emacs 24.0.90.17 (x86_64-unknown-linux-gnu, GTK+
Version 2.24.6):

emacs -Q
C-q TAB
C-b
C-u C-x =

Program received signal SIGSEGV, Segmentation fault.
0x00000000004f6345 in x_set_glyph_string_gc (s=0x7fffffffaf00) at xterm.c:1061
1061	  PREPARE_FACE_FOR_DISPLAY (s->f, s->face);
(gdb) bt
#0  0x00000000004f6345 in x_set_glyph_string_gc (s=0x7fffffffaf00)
    at xterm.c:1061
#1  0x00000000004fa90e in x_draw_glyph_string (s=0x7fffffffaf00)
    at xterm.c:2685
#2  0x000000000046bd3a in draw_glyphs (w=0x1015ed0, x=225, row=0x152b880,
    area=TEXT_AREA, start=0, end=27, hl=DRAW_NORMAL_TEXT, overlaps=0)
    at xdisp.c:23002
#3  0x0000000000471e9c in x_write_glyphs (start=0x160bbd0, len=27)
    at xdisp.c:24636
#4  0x0000000000417c01 in update_text_area (w=0x1015ed0, vpos=12)
    at dispnew.c:3765
#5  0x0000000000418538 in update_window_line (w=0x1015ed0, vpos=12,
    mouse_face_overwritten_p=0x7fffffffb5a4) at dispnew.c:4006
#6  0x00000000004177ef in update_window (w=0x1015ed0, force_p=1)
    at dispnew.c:3625
#7  0x0000000000416e81 in update_window_tree (w=0x1015ed0, force_p=1)
    at dispnew.c:3326
#8  0x0000000000416e59 in update_window_tree (w=0x1030db0, force_p=1)
    at dispnew.c:3324
#9  0x0000000000416c27 in update_frame (f=0x100dbe0, force_p=1,
    inhibit_hairy_id_p=0) at dispnew.c:3253
...
(gdb) p s->face
$1 = (struct face *) 0x0

Re: Crash printing character info TAB character

[Chong Yidong]

Sorry, meant to send this to the bug list instead.  Please disregard the
copy sent here.

Re: Crash printing character info TAB character

[Eli Zaretskii]

> From: Chong Yidong <cyd@gnu.org>
> Date: Mon, 17 Oct 2011 11:15:25 -0400
> 
> On latest trunk, GNU Emacs 24.0.90.17 (x86_64-unknown-linux-gnu, GTK+
> Version 2.24.6):
> 
> emacs -Q
> C-q TAB
> C-b
> C-u C-x =
> 
> Program received signal SIGSEGV, Segmentation fault.
> 0x00000000004f6345 in x_set_glyph_string_gc (s=0x7fffffffaf00) at xterm.c:1061
> 1061	  PREPARE_FACE_FOR_DISPLAY (s->f, s->face);

This is bug #9496.  I was hoping that Handa-san would get to this.

Re: Crash printing character info TAB character

[Kenichi Handa]

In article <83ehybwpyg.fsf@gnu.org>, Eli Zaretskii <eliz@gnu.org> writes:

> > From: Chong Yidong <cyd@gnu.org>
> > Date: Mon, 17 Oct 2011 11:15:25 -0400
> > 
> > On latest trunk, GNU Emacs 24.0.90.17 (x86_64-unknown-linux-gnu, GTK+
> > Version 2.24.6):
> > 
> > emacs -Q
> > C-q TAB
> > C-b
> > C-u C-x =
> > 
> > Program received signal SIGSEGV, Segmentation fault.
> > 0x00000000004f6345 in x_set_glyph_string_gc (s=0x7fffffffaf00) at xterm.c:1061
> > 1061	  PREPARE_FACE_FOR_DISPLAY (s->f, s->face);

> This is bug #9496.  I was hoping that Handa-san would get to this.

I've just installed Johan's patch at least to avoid a crash.

---
Kenichi Handa
handa@m17n.org