Hm? openSUSE:Factory (and openSUSE:13.2) are shipping the latest libdbi version, libdbi-0.9.0-32-g06e738a, and this includes the libdbi-0.9.0-21-gac482c2 commit you mention. However, _dbi_make_datetime is static and private, and did generate a compiler warning. What rpmlint failed to do however is to report this compiler warning as an rpmlint error (as it does when str*() are implicitly declared for example).