TYPEMAP
Crypt_OpenSSL_BIO	T_PTROBJ_SPEC
biostr *	T_PTROBJ_SPEC

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

