Segfault in libfontconfig

(cc'd to port-dreamcast as well)

I'm getting a repeatable sigsegv in libfontconfig when I launch either
xclock or gtk-demo:

Backtrace from xclock:

(gdb) bt
#0  0x2046f888 in FcValueSave () from /usr/X11R6/lib/libfontconfig.so.1
#1  0x2047060a in FcPatternAddWithBinding ()
   from /usr/X11R6/lib/libfontconfig.so.1
#2  0x20470710 in FcPatternAdd () from /usr/X11R6/lib/libfontconfig.so.1
#3  0x20470880 in FcPatternAddString () from
/usr/X11R6/lib/libfontconfig.so.1
#4  0x204713b4 in FcNameParse () from /usr/X11R6/lib/libfontconfig.so.1
#5  0x20475678 in FcDirSave () from /usr/X11R6/lib/libfontconfig.so.1

gtk-demo backtrace is more lengthy, but FcValueSave() is the culprit in
both cases.

I've found these two pages:

http://www2.starcat.ne.jp/~yaoshi/diary/?200407b&to=200407200
http://www2.starcat.ne.jp/~yaoshi/diary/?0217

Which contain the same backtrace, but with the NetBSD/Dreamcast port. I
can't read anything else on the page, but it suggests to me that
this is perhaps a SuperH issue rather than anything hpcsh-specific.

I can sort of make out that the Dreamcast X11 was cross-compiled. My X11
was cross-compiled too, but I can't establish if that's pertinent to the
problem or not.

Matt
-- 
"The theory of Space and Time is a cultural artefact made possible by
the invention of graph paper."