bug#12904: 24.2.50; Emacs 24.2.50 crashes

[Eli Zaretskii]

> From: "Fabrice Niessen" <fni@missioncriticalit.com>
> Cc: 12904@debbugs.gnu.org
> Date: Fri, 16 Nov 2012 14:38:17 +0100
> 
> >> #1  0x011546ce in emacs_abort () at w32fns.c:7706
> >> #2  0x0100145d in terminate_due_to_signal (sig=22, 
> >> backtrace_limit=2147483647) at emacs.c:344
> >> #3 0x010219af in die (msg=0x15cb402 "assertion failed: s->img",
> >> file=0x15bf3b0 "xdisp.c", line=22866) at alloc.c:6440
> >> #4  0x01226d67 in fill_image_glyph_string (s=0x82eba0) at xdisp.c:22866
> >> #5 0x01228070 in draw_glyphs (w=0x6d53da0, x=92, row=0x799f350,
> >> area=TEXT_AREA, start=0, end=119, hl=DRAW_NORMAL_TEXT, overlaps=0)
> >>     at xdisp.c:23444
> >> #6  0x01230ef3 in x_write_glyphs (start=0x7a28000, len=119) at 
> >> xdisp.c:25340
> >> #7  0x010f54b3 in update_text_area (w=0x6d53da0, vpos=124) at 
> >> dispnew.c:3718
> >> #8  0x010f5ed6 in update_window_line (w=0x6d53da0, vpos=124, 
> >> mouse_face_overwritten_p=0x82f107) at dispnew.c:3964
> >> #9  0x010f4f45 in update_window (w=0x6d53da0, force_p=true) at 
> >> dispnew.c:3520
> >
> > Do you still have this session in the debugger?
> 
> No, sorry.
> 
> > I'd like to ask you to report some values.
> 
> Still, tell me which ones... Enlighten me for next time...

In frame #5, the one inside draw_glyphs, type this:

  (gdb) pgrow

and show everything it displays.

Also, in frame #4 (inside fill_image_glyph_string), print these
values:

  (gdb) p s->first_glyph->u.img_id
  (gdb) p s->f->terminal->image_cache->used
  (gdb) p ->terminal->image_cache->images[0]@s->first_glyph->u.img_id
  (gdb) p *s