X509_REQ_get_attr_count
LCRYPTO_USED(X509_REQ_get_attr_count);
int X509_REQ_get_attr_count(const X509_REQ *req);
LCRYPTO_ALIAS(X509_REQ_get_attr_count);
if ((irc = X509_REQ_get_attr_count(req)) != 0)
if ((irc = X509_REQ_get_attr_count(req)) != 1)
if ((irc = X509_REQ_get_attr_count(req)) != 0)