Problem with ParseDN

[saripurigopi]

I'm using ParseDN to validate the DN format. from my understanding once ParseDN code hits ',' or '+' chars, the code assigns attribute.Value from the buffer and appends attribute to RDN.Attributes. This doesn't check whether attribute.Type is valid or not nil before appending.

The code @ https://github.com/go-ldap/ldap/blob/v2.5.0/dn.go#L147. If I enter "test,DC=example,DC=com" as DN it doesn't raise any errors even though its invalid DN input.