PERL_CALLCONV char* Perl_sv_pvn_force(pTHX_ SV* sv, STRLEN* lp);
PERL_CALLCONV char* Perl_sv_pvutf8n_force(pTHX_ SV* sv, STRLEN* lp);
PERL_CALLCONV char* Perl_sv_pvbyten_force(pTHX_ SV* sv, STRLEN* lp);
-PERL_CALLCONV int Perl_sv_realpath(pTHX_ SV* sv, char *path, STRLEN maxlen);
PERL_CALLCONV char* Perl_sv_reftype(pTHX_ SV* sv, int ob);
PERL_CALLCONV void Perl_sv_replace(pTHX_ SV* sv, SV* nsv);
PERL_CALLCONV void Perl_sv_report_used(pTHX);