On Mar 1, Maarten Boekhold wrote > /usr/include/ctype.h: > > #include_next <ctype.h> > > #undef isalnum > #define isalnum(c) (isalpha(c) || isdigit(c)) That's the ctype.h from checker. Perhaps an old, incorrect version of checker put it in /usr/include when it shouldn't have. Try reinstalling libc5-dev. David -- David Engel ODS Networks david@sw.ods.com 1001 E. Arapaho Road (972) 234-6400 Richardson, TX 75081