TYPEMAP
Sendmail_Milter_Context	T_PTROBJ_SPECIAL
u_char *	T_PV

INPUT
T_PTROBJ_SPECIAL
	if (sv_derived_from($arg, \"${(my $ntt=$ntype)=~s/_/::/g;\$ntt}\"))
	{
		IV tmp = SvIV((SV*)SvRV($arg));
		$var = ($type) tmp;
	}
	else
		croak(\"$var is not of type ${(my $ntt=$ntype)=~s/_/::/g;\$ntt}\")

OUTPUT
T_PTROBJ_SPECIAL
	sv_setref_pv($arg, \"${(my $ntt=$ntype)=~s/_/::/g;\$ntt}\", (void*)$var);