title: 'numeric_limits' is not a template
body: <p>I have an error</p>
  
  <pre><code>limits:30:29: error: 'numeric_limits' is not a template
  </code></pre>
  
  <p>in the file, which overloads std::numeric_limits for a specific classes:</p>
  
  <pre><code>  // file "limits"
  #include &lt;limits&gt;
  
  namespace std
  {
  template&lt;typename T&gt; struct numeric_limits&lt;XX::YY&lt;T&gt; &gt; : public 
                              numeric_limits&lt;typename XX::YY&lt;T&gt;::ZZ&gt;
  {
  private:
  &lt;...&gt;
  </code></pre>
  
  <p>what can be a problem?</p>