GNU bug report logs - #2147
Crash when adding (font . nil) to `default-frame-alist'

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From: help-debbugs <at> gnu.org (Emacs bug Tracking System)
To: Chong Yidong <cyd <at> stupidchicken.com>
Subject: bug#2147: marked as done (Crash when adding (font . nil) to 
 `default-frame-alist')
Date: Fri, 06 Feb 2009 16:55:04 +0000

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Your message dated Fri, 06 Feb 2009 11:50:04 -0500
with message-id <87r62b33yb.fsf <at> cyd.mit.edu>
and subject line Re: Default font in Emacs
has caused the Emacs bug report #2147,
regarding Crash when adding (font . nil) to `default-frame-alist'
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
bug report if necessary, and/or fix the problem forthwith.

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immediately.)


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2147: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=2147
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Contact help-debbugs <at> gnu.org with problems

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From: Herbert Euler <herberteuler <at> hotmail.com>
To: <bug-gnu-emacs <at> gnu.org>
Subject: Default font in Emacs
Date: Mon, 2 Feb 2009 11:06:35 +0800

Package: Emacs
Version: 23.0.90.1
 
Because I prefer the FreeMono font to the default font provided, I
tweak it in my ~/.emacs like this:
 
  (let ((font (cond ((eq window-system 'w32)
                      "-outline-courier new-normal-r-normal-normal-16-120-96-96-c-*-fontset-auto2"
                     )
                     ((eq window-system 'x)
                      "FreeMono-13"
                     ))))
    (set-default-font font)
    (add-to-list 'default-frame-alist `(font . ,font)))
 
When I start emacs as a daemon:
 
  $ emacs --daemon
 
The cons cell added to `default-frame-alist' seems to be '(font
. nil). This causes a segfault when running `emacsclient -c':
 
  Program received signal SIGSEGV, Segmentation fault.
  [Switching to Thread 0xb700f700 (LWP 28215)]
  0x0806f438 in estimate_mode_line_height (f=0xa832b38, face_id=MODE_LINE_INACTIVE_FACE_ID) at xdisp.c:1646
  1646 int height = FONT_HEIGHT (FRAME_FONT (f));
  (gdb) p FRAME_FONT (f)
  $1 = (struct font *) 0x0
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From: Chong Yidong <cyd <at> stupidchicken.com>
To: Herbert Euler <herberteuler <at> hotmail.com>
Cc: 2147-done <at> debbugs.gnu.org
Subject: Re: Default font in Emacs
Date: Fri, 06 Feb 2009 11:50:04 -0500

I've checked in a fix.  Thanks for the bug report.

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