OpenSSL::Config.parse

static VALUE
config_s_parse(VALUE klass, VALUE str)
{
    VALUE obj = config_s_alloc(klass);
    CONF *conf = GetConfig(obj);
    BIO *bio;

    bio = ossl_obj2bio(&str);
    config_load_bio(conf, bio); /* Consumes BIO */
    rb_obj_freeze(obj);
    return obj;
}