MirBSD mbtowc bug? failure on test-wcrtomb

[Eric Blake]

Bruno, this one probably needs your help for a gnulib workaround.  On 
MirBSD 10 (20100815), wcrtomb is found but not replaced; leading to 
failure in the unit test:

ac_cv_func_wcrtomb=yes
ac_cv_have_decl_wcrtomb=yes
gl_cv_func_wcrtomb_retval=yes
gl_cv_have_raw_decl_wcrtomb=yes
GNULIB_WCRTOMB='1'
HAVE_WCRTOMB='1'
REPLACE_WCRTOMB='0'

../../gltests/test-wcrtomb.c:43: assertion failed
Abort trap (core dumped)
FAIL: test-wcrtomb.sh

Failing on 'LC_ALL=ja_JP ./test-wcrtomb 3' at this line:

  wc = (wchar_t) 0xBADFACE;
  iret = mbtowc (&wc, s, n);
  ASSERT (iret == n);

with n==2, iret==1, s=="\303\274\303\237er".  Hmm - that means the 
failure doesn't appear to be in wcrtomb, but in mbtowc.  But the only 
mention of mbtowc in config.log are lines such as:

configure:5636: checking whether mbrtowc works as well as mbtowc

--
Eric Blake   address@hidden    +1-801-349-2682
Libvirt virtualization library http://libvirt.org