Re: unicode-2 branch segfaulting on MacOS X?

[Geoffrey Alan Washburn <geoffw@cis.upenn.edu>]

Kenichi Handa wrote:
> In article <453CBBD5.9010900@cis.upenn.edu>, Geoffrey Alan Washburn <geoffw@cis.upenn.edu> 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)