PERL_CALLCONV OP* Perl_newSVREF(pTHX_ OP* o);
PERL_CALLCONV OP* Perl_newSVOP(pTHX_ I32 type, I32 flags, SV* sv);
PERL_CALLCONV SV* Perl_newSViv(pTHX_ IV i);
+PERL_CALLCONV SV* Perl_newSVuv(pTHX_ UV u);
PERL_CALLCONV SV* Perl_newSVnv(pTHX_ NV n);
PERL_CALLCONV SV* Perl_newSVpv(pTHX_ const char* s, STRLEN len);
PERL_CALLCONV SV* Perl_newSVpvn(pTHX_ const char* s, STRLEN len);