Re: More info on sporadic OS/X crash

[John Wiegley <johnw@gnu.org>]

John Wiegley <johnw@gnu.org> writes:

> I've been running Emacs built with -g, waiting for the frequent OS/X
> Carbon crash to appear.  Now I have much more info, though I still
> don't know what it means:
>
> The crash occurs here:
>
>   0x9158ccd0 <SetupOffscreenGDevice+208>: lwz     r4,0(r4)
>
> because $r4 is -1.  This value comes from:
>
>   0x9158ccc4 <SetupOffscreenGDevice+196>: lwz     r4,24(r3)

The crash does not happen if I run in a single frame.  So, my
environment has these features:

 - I have two frames open.

 - These two frames use different fonts.  One uses the default startup
   font, the other has been configured using the Lisp code below.

 - The crash seems to occur at unpredictable times while repainting
   the frame using the default font.

I am setting the font in my other frame using:

(defun big-font ()
  (interactive)
  (create-fontset-from-fontset-spec
   "-apple-courier-medium-r-normal--18-*-*-*-*-*-fontset-courier18,
ascii:-apple-courier-medium-r-normal--18-180-75-75-m-180-mac-roman,
latin-iso8859-1:-apple-courier-medium-r-normal--18-180-75-75-m-180-mac-roman")

  (set-frame-font "fontset-courier18")
  (setq-default line-spacing 1))

Does this ring any bells yet?

John