<p>What warning flags did you need to use to get this to display?  By default mlpack compiles with <code>-Wall</code> and <code>-Wextra</code> so I am surprised that hasn't been seen before now.</p>

<p style="font-size:small;-webkit-text-size-adjust:none;color:#666;">&mdash;<br />You are receiving this because you are subscribed to this thread.<br />Reply to this email directly or <a href="https://github.com/mlpack/mlpack/pull/628#issuecomment-213147828">view it on GitHub</a><img alt="" height="1" src="https://github.com/notifications/beacon/AJ4bFDAi_0WTwqb99yN5WX6p2oRrNa50ks5p5_1ygaJpZM4INHlD.gif" width="1" /></p>
<div itemscope itemtype="http://schema.org/EmailMessage">
<div itemprop="action" itemscope itemtype="http://schema.org/ViewAction">
  <link itemprop="url" href="https://github.com/mlpack/mlpack/pull/628#issuecomment-213147828"></link>
  <meta itemprop="name" content="View Pull Request"></meta>
</div>
<meta itemprop="description" content="View this Pull Request on GitHub"></meta>
</div>