title: Project Settings Recommends Compiler Warning: "Suspicious Moves"
body: <p>In an Xcode project, I'm getting a weird warning. What is it and is it a bad thing?</p>
  
  <p>Here's the warning:</p>
  
  <blockquote>
    <p>Project 'Little Hoot' - Enable Recommended Warning
    This will enable the following recommended compiler warning:</p>
  </blockquote>
  
  <ul>
  <li>Suspicious Moves</li>
  </ul>
  
  <p>It is also recommending I updated another setting too.</p>
  
  <blockquote>
    <p>Target 'Little Hoot' - Update C++ Standard Library
    The 'libstdc++' C++ Standard Library is deprecated. This will update the setting for Target 'Little Hoot' to 'Compiler Default', which is the recommended value.</p>
  </blockquote>
  
  <p>I have looked online and I'm unable to find an answer for at least the first warning.</p>
  
  <p><a href="https://i.stack.imgur.com/7If8d.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/7If8d.png" alt="Screenshot"></a></p>