Re: crash: divide by 0

[Kenichi Handa <handa@m17n.org>]

In article <41D97B49.2000702@freemail.hu>, "B. Anyos" <banyos@freemail.hu> writes:

> It seems that
> 	FRAME_SPACE_WIDTH (it->f)

> is zero (i.e. it->f->space_width is zero)
> While debugging and changing this to anything but zero
> the crash goes away.

> This space_width - according to the Changelog - is a
> relatively new code (added by Kenichi Handa on 2004-12-30)

> Could it be the problem that it is not initialized ?

I wrote:

>> Similar change will be necessary for the other platforms.

So, I think you are using Emacs on Mac or Windows.  And, as
I found these changelogs in today's emacs:

2005-01-03  Jason Rumney  <jasonr@gnu.org>

	* w32bdf.c (w32_load_bdf_font): Set fontp->average_width and
	fontp->space_width to FONT_WIDTH so they are valid.

	* w32fns.c (w32_load_system_font): Set FONT_WIDTH to maximum, not
	average width. Set fontp->average_width and fontp->space_width to
	their appropriate values.

	* w32term.c (x_new_font): Set FRAME_COLUMN_WIDTH to
	fontp->average_width, not FONT_WIDTH.  Set FRAME_SPACE_WIDTH to
	fontp->space_width.

2005-01-03  YAMAMOTO Mitsuharu  <mituharu@math.s.chiba-u.ac.jp>

	* macterm.c (x_new_font): Set FRAME_SPACE_WIDTH.
	(x_font_min_bounds, XLoadQueryFont): Use the correct font width
	metrics for max and min bounds.
	(x_load_font): Correctly calculate average font width metrics.

perhaps the problem is already fixed.

---
Ken'ichi HANDA
handa@m17n.org