title: Redefinition member of the namespace into the nested inline namespace
body: <p>There is a quote from 7.3.1/8 of N3797:</p>
  
  <blockquote>
    <p>Members of an inline namespace can be used in most respects as though
    they were members of the enclosing namespace.</p>
  </blockquote>
  
  <p>Consider the following code snippet:</p>
  
  <pre><code>namespace M
  {
      int j = 7;
      inline namespace MM
      {
          int j = 8;
      }
  }
  </code></pre>
  
  <p>I think that the example violates the <code>ODR</code>. But it is not true and it is compiling successful. Can you explain that behavior?</p>