Heimdal credentials: destroyed or expired?

["Phil Fisher" <philip_fisher@hotmail.co.uk>]

Is there a way of telling with Heimdal whether a credential is unavailable 
because it has been destroyed rather than expiring?

The GSSAPI C-bindings RFC 2744 says that gss_inquire_cred_by_mech() returns 
GSS_S_CREDENTIALS_EXPIRED if the credentials have expired, but I find that 
in Heimdal 1.0.1it returns GSS_S_NO_CRED, as it does if the credential has 
been destroyed.

Thanks,

Phil

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