Package: libc6 Version: 2.1.3-10 gcc's libstdc++-v3 in the cvs main branch is compiled with -Werror and fails due to errors in wctype.h. There is an update in the glibc cvs repository: http://sourceware.cygnus.com/cgi-bin/cvsweb.cgi/libc/wctype/wctype.h.diff?r1=1.23&r2=1.24&cvsroot=glibc