Project Settings Recommends Compiler Warning: "Suspicious Moves"
<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>