connection_ap_mark_as_non_pending_circuit(entry_connection_t *entry_conn)
{
  if (PREDICT_UNLIKELY(NULL == pending_entry_connections))
    return;
  UNMARK();
  smartlist_remove(pending_entry_connections, entry_conn);
}

The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.