__rpc_gss_oid_to_mech
if ((s = __rpc_gss_oid_to_mech(mech_type)) != NULL)
if ((mech = __rpc_gss_oid_to_mech(ap->mech_type)) == NULL)
= __rpc_gss_oid_to_mech(mech_type))
char *__rpc_gss_oid_to_mech();