OpenSSL::ASN1::ObjectId#oid

static VALUE
ossl_asn1obj_get_oid(VALUE self)
{
    VALUE str;
    ASN1_OBJECT *a1obj;
    int state;

    a1obj = ossl_to_asn1obj(ossl_asn1_get_value(self));
    str = rb_protect(asn1obj_get_oid_i, (VALUE)a1obj, &state);
    ASN1_OBJECT_free(a1obj);
    if (state)
        rb_jump_tag(state);
    return str;
}