title: Doxygen doesn't document a class if \code is used
body: <p>This is either a bug in Doxygen or I am missing something. It is very easy to reproduce as follows:</p>
  
  <p>I have the following class in a <code>foo.h</code> file:</p>
  
  <pre class="lang-cpp prettyprint-override"><code>class Foo {
  
  public:
      /**
       * This is a comment with \code value.
       */
      int bar(int value);
  
  };
  </code></pre>
  
  <p>If I use Doxygen (version <code>1.8.17</code>) with the default configuration (generated by the <code>doxygen -g</code> command) then class <code>Foo</code> doesn't appear in the produced documentation. If I simply remove the <code>\code</code> symbol in the comment of <code>bar</code> then the class appears. If I put it back, it disappears again and so on.</p>
  
  <p>This looks like a bug. Am I missing something ?</p>
  
  <p>P.S.: I use MacOS <code>10.15.4</code> if it makes any difference.</p>