title: Initializing vector of vectors
body: <p>Is the following code</p>
  
  <pre><code>vector&lt;vector&lt;int&gt; &gt; v(3,5);
  </code></pre>
  
  <p>legal C++ 98? Is it legal C++11?</p>
  
  <p>It compiles with MSVS 2010 and gives a vector of size 3, each of which elements is a vector of size 5. It fails to compile with MSVS 2013 and MSVS "14".</p>