Re: Emacs crash CVS 2003-10-17

[Werner LEMBERG <wl@gnu.org>]

> > Program received signal SIGSEGV, Segmentation fault.
> > 0x08077c43 in fill_glyph_string (s=0xbfffe424, face_id=26,
> >     start=6, end=79, overlaps_p=0) at xdisp.c:16730
> > 16730               = FONT_INFO_FROM_ID (f, face->font_info_id);
> 
> I'd like to know the result of these:
> (gdb) p *face
> (gdb) p *glyph

  (gdb) p *face
  Cannot access memory at address 0x0
  (gdb) p *glyph
  $5 = {
    charpos = 7, 
    object = -2006738280, 
    pixel_width = 24, 
    voffset = 0, 
    type = 0, 
    multibyte_p = 1, 
    left_box_line_p = 0, 
    right_box_line_p = 0, 
    overlaps_vertically_p = 0, 
    padding_p = 0, 
    glyph_not_available_p = 0, 
    face_id = 26, 
    font_type = 0, 
    u = {
      ch = 157926, 
      cmp_id = 157926, 
      img_id = 157926, 
      stretch = {
        height = 26854, 
        ascent = 2
      }, 
      val = 157926
    }
  }

> But, as it crashes in the inline function
> get_glyph_face_and_encoding, those values won't be available in the
> current gdb session.
> 
> Can you reproduce it constantly?

No.

> If not, could you
> re-compile xdisp.c with CFLAGS='-g -fno-inline', rebuild
> emacs, and use it for a while?   The actual procedure will
> be:
> % cd .../emacs/src
> % rm xdisp.o
> % make CFLAGS='-g -fno-inline'

OK, I'll rebuild emacs from a recent CVS snapshot with `-O0'.


    Werner