libperlio-utf8-strict-perl 0.006-1build2 (amd64 binary) in ubuntu artful

 PerlIO::utf8_strict provides a fast and correct UTF-8 PerlIO layer.
 Unlike perl's default :utf8 layer it checks the input for correctness
 and will croak if it finds an ill-formed UTF-8 octet sequence or
 noncharacter code points not meant for interchange.