title: error C2036: 'Agent *const ' : unknown size in 'vector' class
body: <p>I'm getting an error occurring in the <code>vector</code> class, as in, the class which you access when you <code>#include &lt; vector &gt;</code></p>
  
  <p>I it get only once, and I don't have a clue why it would be occurring:</p>
  
  <blockquote>
    <p>error C2036: <code>'Agent *const '</code> : unknown size</p>
  </blockquote>
  
  <p>This is also occurring in vector, and the code that has the error is here:</p>
  
  <pre><code>size_type size() const
  {   // return length of sequence
      return (this-&gt;_Mylast - this-&gt;_Myfirst); // error on this line
  }
  </code></pre>