[Fontconfig] fontconfig or Xft bug? Segmentation fault with dangling symlink
Wed, 7 May 2003 04:46:45 +0800
While doing some testing with Firefly's fix for mixed AA and non-AA
patch (which I think you fixed already, but not yet in XFree86 4.3.0
etc. and thus not yet propagated to most distributions), I tried to
reproduce the problem on Debian (unstable/sid), and move the Arial and
Verdana TrueType fonts out of the way so I could have only the bitmap
helvetica left. After that, "xfd -fa arial-24" segfaults. It is
likely triggered by a dangling symlink.
Actual font file
Symlink to /usr/share/fonts/truetype/Arial.ttf
(Yes, that's the design of defoma Debian Font Manager.)
Not sure if it matters: I don't have
Steps to reproduce:
1. Just to make sure everything is in a clean state, I removed
2. "xfd -fa arial-24" works fine.
3. Move /usr/share/fonts/truetype/Arial.ttf out of the way.
4. "xfd -fa arial-24" now shows error:
Warning: Cannot convert string "arial-24" to type XftFont
At this point, ~/.fonts.cache-1 was automatically updated with the
"/usr/share/fonts/truetype/Arial.ttf" entry removed, but the entry for
lingers, which is okay, I suppose. :-)
XftFontClose() is called twice though: (I installed your latest
render-0.8, xrender-0.8.2 and xft-2.1.2 in /tmp/dest)
$ LD_LIBRARY_PATH=/tmp/dest/usr/X11R6/lib gdb --args ~/xfd -fa arial-24
#0 0x0804a8c5 in XftFontClose () at xftfreetype.c:995
#1 0x401a57b0 in vendorShellWidgetClass () from /usr/X11R6/lib/libXt.so.6
#2 0x40170301 in XtInitializeWidgetClass () from /usr/X11R6/lib/libXt.so.6
#3 0x401707ef in XtInitializeWidgetClass () from /usr/X11R6/lib/libXt.so.6
#4 0x40170c10 in _XtCreateWidget () from /usr/X11R6/lib/libXt.so.6
#5 0x40170e83 in XtCreateManagedWidget () from /usr/X11R6/lib/libXt.so.6
#6 0x08049822 in XftFontClose () at xftfreetype.c:995
#7 0x402b0a51 in __libc_start_main () from /lib/libc.so.6
The xftfreetype.c here is from xft-2.1.2.
Thanks in advance!
P.S. I know I probably should use bugzilla, but I'm too sleepy now, and
I'll probably forget to report it if I don't do it now, so... :-)
Anthony Fok Tung-Ling
ThizLinux Laboratory <email@example.com> http://www.thizlinux.com/
Debian Chinese Project <firstname.lastname@example.org> http://www.debian.org/intl/zh/
Come visit Our Lady of Victory Camp! http://www.olvc.ab.ca/