Improper Handling of Exceptional Conditions

  result, err := process()
- if result == nil {
-     return
+ if err != nil {
+     return fmt.Errorf("process failed: %w", err)
  }
  useResult(result)
  

- const connection = await pool.getConnection();
- const result = await connection.query(sql);
- connection.release();
- return result;
+ let connection;
+ try {
+   connection = await pool.getConnection();
+   const result = await connection.query(sql);
+   return result;
+ } finally {
+   if (connection) await connection.release();
+ }
  

- from flask import request
- 
- @app.route('/api/admin')
- def admin_data():
-     try:
-         user = authenticate(request.headers.get('Authorization'))
-     except Exception:
-         pass  # Auth failed but continues
+ from flask import request, abort
+ 
+ @app.route('/api/admin')
+ def admin_data():
+     try:
+         user = authenticate(request.headers.get('Authorization'))
+     except Exception:
+         abort(403)
      return {'admin_data': get_sensitive_data()}
  

- import requests
- 
- def fetch_data(url):
-     response = requests.get(url)
-     return response.json()
+ import logging
+ import requests
+ 
+ logger = logging.getLogger(__name__)
+ 
+ def fetch_data(url):
+     try:
+         response = requests.get(url, timeout=5)
+         response.raise_for_status()
+         return response.json()
+     except requests.RequestException as e:
+         logger.error(f"Request failed: {e}")
+         return None