title: How do I print a #defined constant in GDB?
body: <p>As per subject. </p>
  
  <p>I have some constants hash defined like so:</p>
  
  <pre><code>#define CONST 40
  </code></pre>
  
  <p>I've set a breakpoint in my program. How do I print the value of that constant? (I know I can just look at the source code, but I want to be sure of it)</p>