title: Error: expected ‘,’ or ‘...’ before ‘for’ in #define
body: <p>I have an error in a #define in which I want to define a loop in this way:</p>
  
  <pre><code>#define loop                for (;;)
  </code></pre>
  
  <p>But at compiling time I get the error </p>
  
  <p><code>util.h:39:29: error: expected ‘,’ or ‘...’ before ‘for’
   #define loop                for (;;)</code></p>
  
  <p>Any idea why this can be?</p>