See the safeclib docs and tests. I'm the maintainer. Only a couple do not conform.
Their SecureMemset variant is insecure. Most crypto memset_s implementations are unsafe, but they don't want to flush their cache, so attackers can look at the cache for the secrets.
Their SecureMemset variant is insecure. Most crypto memset_s implementations are unsafe, but they don't want to flush their cache, so attackers can look at the cache for the secrets.