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bug#3158: marked as done (23.0.92; assertion failure in fontset_find_fo


From: Emacs bug Tracking System
Subject: bug#3158: marked as done (23.0.92; assertion failure in fontset_find_font)
Date: Thu, 30 Apr 2009 05:00:06 +0000

Your message dated Thu, 30 Apr 2009 13:52:19 +0900
with message-id <address@hidden>
and subject line Re: 23.0.92; assertion failure in fontset_find_font
has caused the Emacs bug report #3158,
regarding 23.0.92; assertion failure in fontset_find_font
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.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact address@hidden
immediately.)


-- 
3158: http://emacsbugs.donarmstrong.com/cgi-bin/bugreport.cgi?bug=3158
Emacs Bug Tracking System
Contact address@hidden with problems
--- Begin Message --- Subject: 23.0.92; assertion failure in fontset_find_font Date: Wed, 29 Apr 2009 10:58:04 +0900 User-agent: Wanderlust/2.14.0 (Africa) SEMI/1.14.6 (Maruoka) FLIM/1.14.8 (Shij┼Ź) APEL/10.6 Emacs/22.3 (sparc-sun-solaris2.8) MULE/5.0 (SAKAKI)
Steps to reproduce:

  1. Compile Emacs with "make CFLAGS='-g -DENABLE_CHECKING'"
  2. emacs -Q
  3. M-x list-charset-chars RET mac-roman RET

Result:

  .../src/fontset.c:551: Emacs fatal error: assertion failed: 
VECTORLIKEP((rfont_def))

The value of rfont_def is nil when this failure happens.

#3  0x00241da4 in fontset_find_font (fontset=17297828, c=57374, face=0x1054820, 
id=147, fallback=0) at .../src/fontset.c:551
551                   = FONT_DEF_REPERTORY (RFONT_DEF_FONT_DEF (rfont_def));
(gdb) list
546                first.  */
547             for (i = 0; i < ASIZE (vec); i++)
548               {
549                 Lisp_Object rfont_def = AREF (vec, i);
550                 Lisp_Object repertory
551                   = FONT_DEF_REPERTORY (RFONT_DEF_FONT_DEF (rfont_def));
552     
553                 if (XINT (repertory) == id)
554                   {
555                     charset_matched = i;
(gdb) call debug_print (rfont_def)
nil
(gdb) call debug_print (vec)
[[nil [#<font-spec nil nil nil nil iso10646-1 nil nil nil nil nil nil nil nil> 
142 nil] nil 0] nil]
(gdb) p i
$1 = 1

                                     YAMAMOTO Mitsuharu
                                address@hidden

In GNU Emacs 23.0.92.1 (powerpc-apple-darwin9.6.0, X toolkit)
 of 2009-04-29 on yamamoto-mitsuharu-no-power-mac-g5.local
Windowing system distributor `The X.Org Foundation', version 11.0.10300000
configured using `configure  '--without-jpeg' '--without-gif' '--without-tiff''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: ja_JP.UTF-8
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default-enable-multibyte-characters: t

Major mode: Lisp Interaction

Minor modes in effect:
  tooltip-mode: t
  tool-bar-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  global-auto-composition-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t



--- End Message ---
--- Begin Message --- Subject: Re: 23.0.92; assertion failure in fontset_find_font Date: Thu, 30 Apr 2009 13:52:19 +0900
In article <address@hidden>, Chong Yidong <address@hidden> writes:

> >   1. Compile Emacs with "make CFLAGS='-g -DENABLE_CHECKING'"
> >   2. emacs -Q
> >   3. M-x list-charset-chars RET mac-roman RET
> >
> >   .../src/fontset.c:551: Emacs fatal error: assertion failed:
> >   VECTORLIKEP((rfont_def))
> >
> > The value of rfont_def is nil when this failure happens.

> I think the relevant code in fontset_find_font needs to check when
> rfont_def is nil, and ignore those values.  Handa-san, could you verify?

I fixed it by breaking the loop instead of ignoring that
element because rfont_def nil means "don't try the remaining
fonts and the fallback fonts".

---
Kenichi Handa
address@hidden


--- End Message ---

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