PERL_CALLCONV void Perl_utilize(pTHX_ int aver, I32 floor, OP* version, OP* id, OP* arg);
PERL_CALLCONV U8* Perl_utf16_to_utf8(pTHX_ U8* p, U8 *d, I32 bytelen, I32 *newlen);
PERL_CALLCONV U8* Perl_utf16_to_utf8_reversed(pTHX_ U8* p, U8 *d, I32 bytelen, I32 *newlen);
PERL_CALLCONV void Perl_utilize(pTHX_ int aver, I32 floor, OP* version, OP* id, OP* arg);
PERL_CALLCONV U8* Perl_utf16_to_utf8(pTHX_ U8* p, U8 *d, I32 bytelen, I32 *newlen);
PERL_CALLCONV U8* Perl_utf16_to_utf8_reversed(pTHX_ U8* p, U8 *d, I32 bytelen, I32 *newlen);