title: MIPS Stack- Erasing Contents Clarification
body: <p>My Textbook says: Notice in this example, you aren't actually erasing the stack contents. If you're storing secret data, you should overwrite it with zeroes, or (ideally) garbage data. For
  now, we can just leave our garbage lying around.</p>
  
  <p><img src="https://i.stack.imgur.com/shyjb.jpg" alt="enter image description here"></p>
  
  <p>Aren't the contents that are saved on the stack removed after executing this?</p>
  
  <pre><code>add $30, $30, $4
  </code></pre>
  
  <p>Since it pops off all the saved contents.</p>