in vdprintf(), no need to use the file locking mecanism when using
fflush() as the variable is stack based (no possible concurrent access).
call directly __sflush()

ok visa@ deraadt@

Add framework for resolving (pun intended) libc namespace issues, using
wrapper .h files and asm labels to let internal calls resolve directly and
not be overridable or use the PLT. Then, apply that

Add framework for resolving (pun intended) libc namespace issues, using
wrapper .h files and asm labels to let internal calls resolve directly and
not be overridable or use the PLT. Then, apply that framework to most of
the functions in stdio.h, string.h, err.h, and wchar.h. Delete the
should-have-been-hidden-all-along _v?(err|warn)[cx]? symbols while here.

tests clean on i386, amd64, sparc64, powerpc, and mips64

naming feedback from kettenis@ and millert@
ok kettenis@

show more ...

Add support for POSIX.1-2008 functions dprintf(3) and vdprintf(3).

Feedback from millert@ guenther@
OK guenther@ man page bits OK jmc@