Re: unicode-2 branch segfaulting on MacOS X?

[Geoffrey Alan Washburn]

Kenichi Handa wrote:
> In article <address@hidden>, Geoffrey Alan Washburn <address@hidden> writes:
>
> > Kenichi Handa wrote:
> > > Thank you.  I think I found what was wrong.  As I've just
> > > installed a fix, please try the latest code.
>
> > 	Thanks, that seems to have solved the problem in font_unparse_fcname, 
> > but now it seems to be segfaulting in gtk_default_draw_check ()
>
>
> > Starting program: /local/bin/emacs --enable-font-backend --font 
> > "Bitstream Vera Sans Mono-16"
> > Breakpoint 3 at 0x9ca20: file xterm.c, line 8053.
>
> > Program received signal EXC_BAD_ACCESS, Could not access memory.
> > Reason: KERN_PROTECTION_FAILURE at address: 0x00000004
> > 0x0018f358 in gtk_default_draw_check () at font.c:1328
> > 1328          p += sprintf (p, ":%s=%s", style_names[i],
> > (gdb) p styles[i]
> > Cannot access memory at address 0xca87dc74
>
> It seems that the stack (or the symbol table is) is
> completely broken.  Please rebuild emacs with this:
> % make CFLAGS=-g clean all
> and check if Emacs segfaults at the same place or not.


        Thanks.  Same place, but slightly different results.


GNU gdb 6.3.50-20050815 (Apple version gdb-563) (Wed Jul 19 05:17:43 GMT 
2006)
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This GDB was configured as "powerpc-apple-darwin"...Reading symbols for 
shared
libraries ............................. done

DISPLAY = :0.0
TERM = rxvt
Breakpoint 1 at 0x9012dbd0
Breakpoint 2 at 0x17ef34: file sysdep.c, line 1383.
(gdb) run  --enable-font-backend --font "Bitstream Vera Sans Mono-16"
Starting program: /local/bin/emacs --enable-font-backend --font 
"Bitstream Vera Sans
Mono-16"
Reading symbols for shared libraries
...+.....++++....+...............................................+++++..............+..+.++++ 

done
Breakpoint 3 at 0x10838c: file xterm.c, line 8053.

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_PROTECTION_FAILURE at address: 0x00000004
0x002b5a9c in font_unparse_fcname (font=43808468, pixel_size=17, 
name=0x2b20de0
"bitstream vera sans mono:pixelsize=17:weight=medium:slant=r", 
nbytes=96) at
font.c:1328
1328          p += sprintf (p, ":%s=%s", style_names[i],
(gdb) print i
$1 = 2
(gdb) print style_names
$2 = {0x2dd54c "weight", 0x2dd554 "slant", 0x2c8fa8 "width"}
(gdb) print style_names[2]
$3 = 0x2c8fa8 "width"
(gdb) p styles
$4 = {66909105, 66836681, 58898315}
(gdb) p styles[i]
$5 = 58898315
(gdb) xtype
Lisp_String
(gdb) pp styles[i]
""
(gdb) bt full
#0  0x002b5a9c in font_unparse_fcname (font=43808468, pixel_size=17, 
name=0x2b20de0
"bitstream vera sans mono:pixelsize=17:weight=medium:slant=r", 
nbytes=96) at
font.c:1328
        val = 76618018
        point_size = -1
        dpi = -1
        spacing = -1
        scalable = -1
        i = 2
        len = 68
        p = 0x2b20e1b ""
        styles = {66909105, 66836681, 58898315}
        style_names = {0x2dd54c "weight", 0x2dd554 "slant", 0x2c8fa8 "width"}
#1  0x002c5444 in xftfont_open (f=0x29c6490, entity=43808468, 
pixel_size=17) at
xftfont.c:267
        dpyinfo = (Display_Info *) 0x29281d0
        display = (struct _XDisplay *) 0x58fe200
        val = 76618018
        pattern = (struct _FcPattern *) 0x2b1aac0
        pat = (struct _FcPattern *) 0x2b0b4a0
        file = (FcChar8 *) 0x29c7740 "/usr/X11R6/lib/X11/fonts/TTF/VeraMono.ttf"
        xftfont_info = (struct xftfont_info *) 0x2b20bb0
        xfont = (XFontStruct *) 0x2b20d90
        font = (struct font *) 0x2b20bb0
        size = 17
        xftfont = (XftFont *) 0x5955c00
        spacing = 8
        name = 0x2b20de0 "bitstream vera sans
mono:pixelsize=17:weight=medium:slant=r"
        len = 96
#2  0x002b8a14 in font_open_entity (f=0x29c6490, entity=43808468, 
pixel_size=17) at
font.c:2457
        driver_list = (struct font_driver_list *) 0x29c5550
        objlist = 58721289
        size = 0
        val = 58900241
        font = (struct font *) 0x59346e3
#3  0x002b9d8c in font_open_by_name (f=0x29c6490, name=0x4962b90 
"Bitstream Vera
Sans Mono-16") at font.c:2778
        args = {58812241, 93538019}
        spec = 43805732
        prefer = 68185644
        size = 136
        entity = 43808468
        entity_list = 41355997
        frame = 43803796
        i = 8
        pixel_size = 17
#4  0x0001cf38 in x_set_font (f=0x29c6490, arg=77084827, 
oldval=58721289) at
frame.c:3114
        fontset = -1
        font_object = 58864001
        result = 11
        fontset_name = 41356205
        frame = 58721313
        old_fontset = -1
#5  0x0001bb40 in x_set_frame_parameters (f=0x29c6490, alist=58721289) at
frame.c:2767
        param_index = 56
        old_value = 58721289
        count = 7
        prop = 58865185
        val = 77084827
        tail = 58721289
        width = 10
        height = 10
        left = 58721313
        top = 58721313
        icon_left = 58721313
        icon_top = 58721313
        parms = (Lisp_Object *) 0xbfff9f40
        values = (Lisp_Object *) 0xbfff9f20
        i = 1
        p = 0
        left_no_change = 0
        top_no_change = 0
        icon_left_no_change = 0
        icon_top_no_change = 0
        fullscreen_is_being_set = 0
        gcpro1 = {
  next = 0x498389b,
  var = 0xbfffa020,
  nvars = 1
}
        gcpro2 = {
  next = 0xbfff9fd0,
  var = 0x1f010,
  nvars = 1
}
#6  0x0004962b in redisplay_window (window=300580, 
just_this_one_p=1140850689) at
xdisp.c:13533
        w = (struct window *) 0xff000000
        f = (struct frame *) 0xbffffff
        buffer = (struct buffer *) 0x0
        old = (struct buffer *) 0x58f02
        lpoint = {
  charpos = 300587,
  bytepos = -2147483648
}
        opoint = {
  charpos = 570425343,
  bytepos = -16777216
}
        startp = {
  charpos = 300425,
  bytepos = 1811939328
}
        update_mode_line = -16777216
        tem = 251658239
        it = {
  window = 100663295,
  w = 0xff000000,
  f = 0x4962b,
  method = 1946157056,
  stop_charpos = 251658239,
  end_charpos = -16777216,
  s = 0x58f01 "_",
  string_nchars = -335544320,
  region_beg_charpos = 285212671,
  region_end_charpos = -16777216,
  redisplay_end_trigger_charpos = 300587,
  multibyte_p = 0,
  header_line_p = 1,
  string_from_display_prop_p = 0,
  ellipsis_p = 1,
  dp = 0x1ffffff,
  dpvec = 0xff000000,
  dpend = 0x4962b,
  dpvec_char_len = 1409286144,
  dpvec_face_id = 83886079,
  saved_face_id = -16777216,
  ctl_chars = {300587, 1207959552, 100663295, -16777216, 300587, 
1006632960,
167772159, -16777216, 300587, 738197504, 184549375, -16777216, 300587, 
469762048,
251658239, -16777216},
  start = {
    pos = {
      charpos = 300587,
      bytepos = 134217728
    },
    overlay_string_index = 150994943,
    string_pos = {
      charpos = -16777216,
      bytepos = 300586
    },
    dpvec_index = -133916614
  },
  current = {
    pos = {
      charpos = 134217728,
      bytepos = 3
    },
    overlay_string_index = -201326592,
    string_pos = {
      charpos = 0,
      bytepos = 1140850687
    },
    dpvec_index = -16777216
  },
  overlay_strings = {300586, -1342177280, 134217727, -16777216, 300586, 
-1543503872,
134217727, -16777216, 300425, -1811939328, 150994943, -16777216, 300586,
-1811939328, 251658239, -16777216},
  n_overlay_strings = 300586,
  string = -2147483648,
  stack = {{
      string = 268435455,
      string_nchars = -16777216,
      end_charpos = 300586,
      stop_charpos = 1811939328,
      face_id = 184549375,
      u = {
        image = {
          object = -16777216,
          slice = {
            x = 300586,
            y = 1543503872,
            width = 905969663,
            height = -16777216
          },
          image_id = 300586
        },
        comp = {
          object = -16777216,
          c = 300586,
          len = 1543503872,
          cmp_id = 905969663,
          cmp_len = -16777216
        },
        stretch = {
          object = -16777216
        }
      },
      position = {
        charpos = 536870912,
        bytepos = 788529151
      },
      current = {
        pos = {
          charpos = -16777216,
          bytepos = 300585
        },
        overlay_string_index = -335544320,
        string_pos = {
          charpos = 805306367,
          bytepos = -16777216
        },
        dpvec_index = 300585
      },
      area = 3087007744,
      method = 637534207,
      multibyte_p = 1,
      string_from_display_prop_p = 1,
      display_ellipsis_p = 1,
      space_width = 300585,
      font_height = -1946157056,
      voffset = 15871
    }, {
      string = -16777216,
      string_nchars = 300585,
      end_charpos = 1207959552,
      stop_charpos = 83886079,
      face_id = -16777216,
      u = {
        image = {
          object = 300425,
          slice = {
            x = -1610612736,
            y = 922746879,
            width = -16777216,
            height = 300585
          },
          image_id = 201326592
        },
        comp = {
          object = 300425,
          c = -1610612736,
          len = 922746879,
          cmp_id = -16777216,
          cmp_len = 300585
        },
        stretch = {
          object = 300425
        }
      },
      position = {
        charpos = 738197503,
        bytepos = -16777216
      },
      current = {
        pos = {
          charpos = 300433,
          bytepos = 536870912
        },
        overlay_string_index = 301989887,
        string_pos = {
          charpos = -16777216,
          bytepos = 300433
        },
        dpvec_index = 134217728
      },
      area = 905969663,
      method = 4278190080,
      multibyte_p = 0,
      string_from_display_prop_p = 0,
      display_ellipsis_p = 0,
      space_width = -805306368,
      font_height = 721420287,
      voffset = -256
    }, {
      string = 300432,
      string_nchars = -671088640,
      end_charpos = 218103807,
      stop_charpos = -16777216,
      face_id = 300432,
      u = {
        image = {
          object = -1006632960,
          slice = {
            x = 520093695,
            y = -16777216,
            width = 300584,
            height = -1409286144
          },
          image_id = 704643071
        },
        comp = {
          object = -1006632960,
          c = 520093695,
          len = -16777216,
          cmp_id = 300584,
          cmp_len = -1409286144
        },
        stretch = {
          object = -1006632960
        }
      },
      position = {
        charpos = -16777216,
        bytepos = 300432
      },
      current = {
        pos = {
          charpos = -1811939328,
          bytepos = 301989887
        },
        overlay_string_index = -16777216,
        string_pos = {
          charpos = 300432,
          bytepos = 2080374784
        },
        dpvec_index = 671088639
      },
      area = 4278190080,
      method = 300432,
      multibyte_p = 0,
      string_from_display_prop_p = 1,
      display_ellipsis_p = 0,
      space_width = 251658239,
      font_height = -16777216,
      voffset = 4
    }, {
      string = 1006632960,
      string_nchars = 503316479,
      end_charpos = -16777216,
      stop_charpos = 300432,
      face_id = 402653184,
      u = {
        image = {
          object = 218103807,
          slice = {
            x = -16777216,
            y = 364291,
            width = 671088640,
            height = 520093695
          },
          image_id = -16777216
        },
        comp = {
          object = 218103807,
          c = -16777216,
          len = 364291,
          cmp_id = 671088640,
          cmp_len = 520093695
        },
        stretch = {
          object = 218103807
        }
      },
      position = {
        charpos = 300584,
        bytepos = -2013265920
      },
      current = {
        pos = {
          charpos = 100663295,
          bytepos = -16777216
        },
        overlay_string_index = 300432,
        string_pos = {
          charpos = 201326592,
          bytepos = 218103807
        },
        dpvec_index = -16777216
      },
      area = 364291,
      method = 335544320,
      multibyte_p = 0,
      string_from_display_prop_p = 0,
      display_ellipsis_p = 0,
      space_width = 352321536,
      font_height = 300584,
      voffset = 27648
    }},
  sp = 234881023,
  selective_display_ellipsis_p = 1,
  ctl_arrow_p = 1,
  selective = 364291,
  what = IT_CHARACTER,
  face_id = 234881023,
  face_box_p = 1,
  start_of_box_run_p = 1,
  end_of_box_run_p = 1,
  overlay_strings_at_end_processed_p = 1,
  ignore_overlay_strings_at_pos_p = 1,
  glyph_not_available_p = 1,
  starts_in_middle_of_char_p = 1,
  face_before_selective_p = 1,
  constrain_row_ascent_descent_p = 0,
  base_face_id = 364290,
  c = -335544320,
  len = 318767103,
  cmp_id = -16777216,
  cmp_len = 300584,
  char_to_display = 1409286144,
  image_id = 1325400063,
  slice = {
    x = -16777216,
    y = 300584,
    width = 0,
    height = 150994943
  },
  space_width = -16777216,
  voffset = 4,
  font_height = -1409286144,
  object = 234881023,
  position = {
    charpos = -16777216,
    bytepos = 300425
  },
  truncate_lines_p = 1,
  tab_width = 0,
  truncation_pixel_width = 3839,
  continuation_pixel_width = -1,
  first_visible_x = -16777216,
  last_visible_x = 300425,
  last_visible_y = -805306368,
  extra_line_spacing = 117440511,
  max_extra_line_spacing = -16777216,
  override_ascent = 300425,
  override_descent = -469762048,
  override_boff = 150994943,
  glyph_row = 0xff000000,
  area = 300425,
  nglyphs = -268435456,
  pixel_width = 100663295,
  ascent = -16777216,
  descent = 300426,
  max_ascent = 0,
  max_descent = 150994943,
  phys_ascent = -16777216,
  phys_descent = 300426,
  max_phys_ascent = 201326592,
  max_phys_descent = 100663295,
  current_x = -16777216,
  continuation_lines_width = 300426,
  current_y = 469762053,
  first_vpos = 83886079,
  vpos = -16777216,
  hpos = 360528,
  left_user_fringe_bitmap = 3072,
  right_user_fringe_bitmap = 1,
  left_user_fringe_face_id = 1630207,
  right_user_fringe_face_id = 2088960
}
        current_matrix_up_to_date_p = 335544320
        used_current_matrix_p = 364290
        buffer_unchanged_p = -16777216
        temp_scroll_step = 300582
        count = 167772159
        rc = 603979776
        centering_position = 364290
        last_line_misfit = -16777216
Cannot access memory at address 0x1bffffff
Previous frame inner to this frame (corrupt stack?)

Lisp Backtrace:
"x-create-frame" (0x2770c85)
"x-create-frame-with-faces" (0x2770c95)
"make-frame" (0x2770c95)
"frame-initialize" (0x48f1d89)
"command-line" (0x4983bdb)
"normal-top-level" (0xbfffb410)
(gdb)