Re: "Invalid or undefined bitmap" when launched with -Q

[Peter Dyballa]

Am 12.08.2006 um 16:27 schrieb Richard Stallman:

>     These are the only three lines in *Messages*:
>
>             (/usr/local/bin/emacs-22.0.50 -Q)
> 	    For information about the GNU Project and its goals, type C-h  
> C-p.
>             Invalid or undefined bitmap
>
> Please find out which bitmap gets the error.
> Or at least find out what code generates the error.
> (We should probably put more info in the error message.)

The string "Invalid or undefined bitmap" is output by line #1193 in  
xfaces.c in function load_pixmap():

              add_to_log ("Invalid or undefined bitmap %s", name, Qnil);

Setting a breakpoint at load_pixmap and add_to_log, Emacs goes the  
first time through this block (lines #1190-1199):

  if (bitmap_id < 0)
    {
      add_to_log ("Invalid or undefined bitmap %s", name, Qnil);
      bitmap_id = 0;

      if (w_ptr)
        *w_ptr = 0;
      if (h_ptr)
        *h_ptr = 0;
    }

Gdb prints:

        Breakpoint 1 at 0xc9420: file xfaces.c, line 1163.
        Breakpoint 2 at 0x3408c: file xdisp.c, line 7169.
        Breakpoint 3 at 0x1542c0: file sysdep.c, line 1393.

run
cont

   the first frame appears, no tool-bar yet, the wrong colour for  
menu names

	Breakpoint 1, load_pixmap (f=0x9a8420, name=60552283,  
w_ptr=0x9f5324, h_ptr=0x9f5328) at xfaces.c:1163
        
   'next' makes the tool-bar appear and corrects the colour
   then I can change in this frame to the *Messages* buffer
   it already has the 'Invalid...' message

	Breakpoint 2, add_to_log (format=0x28dc10 "Invalid or undefined  
bitmap %s", arg1=60552283, arg2=58721289) at xdisp.c:7169
        
   Checking the value from 'bitmap_id = x_create_bitmap_from_file  
(f, name);' I get -1, so the if takes the add_to_log route.


Adding x_create_bitmap_from_file to the breakpoints, line #499 in  
image.c (fd = openp (Vx_bitmap_file_path, file, Qnil, &found, Qnil);)  
I can see that fd is -1. The struct dpyinfo contains 1 as  
bitmaps_last, so the for loop is executed once. While id is 0,  
dpyinfo->bitmaps[id].refcount is 2, and dpyinfo->bitmaps[id].file is  
0x0.

Stepping into openp and landing in lread.c I can print the value of  
fn in line #1207:

	$9 = 0xbfffc2c8 "/usr/X11R6/include/X11/bitmaps\270\221\277\377\302 
\360"

which doesn't look right (I have the directory /usr/X11R6/include/X11/ 
bitmaps), and so we end in Breakpoint 2.

So there seems to be some error in C?

Is there something more to debug by me?


I have this x resource:

        Emacs*bitmapIcon:       on


--
Greetings

  Pete

"Only two things are infinite, the universe and human stupidity, and  
I'm not sure about the former."
                                    -- Albert Einstein