PERL_CALLCONV HV* Perl_newHVhv(pTHX_ HV* hv);
PERL_CALLCONV IO* Perl_newIO(pTHX);
PERL_CALLCONV OP* Perl_newLISTOP(pTHX_ I32 type, I32 flags, OP* first, OP* last);
+PERL_CALLCONV OP* Perl_newPADOP(pTHX_ I32 type, I32 flags, SV* sv);
PERL_CALLCONV OP* Perl_newPMOP(pTHX_ I32 type, I32 flags);
PERL_CALLCONV OP* Perl_newPVOP(pTHX_ I32 type, I32 flags, char* pv);
PERL_CALLCONV SV* Perl_newRV(pTHX_ SV* pref);