# 
# 
# patch "keys.cc"
#  from [ca4dcc435354d1e1be3ee25a4d0a518b1d9c8684]
#    to [915404dc8265b4484d1a727ad62a9122dfd05f80]
# 
============================================================
--- keys.cc	ca4dcc435354d1e1be3ee25a4d0a518b1d9c8684
+++ keys.cc	915404dc8265b4484d1a727ad62a9122dfd05f80
@@ -376,6 +376,7 @@ make_signature(app_state & app,         
       if (!pub_key)
           throw informative_failure("Failed to get RSA verifying key");
 
+      E(ssh_keys.size() > 0, F("make_signature: no rsa keys received from ssh-agent"));
       for (vector<RSA_PublicKey>::const_iterator
              si = ssh_keys.begin(); si != ssh_keys.end(); ++si) {
         if ((*pub_key).get_e() == (*si).get_e()