title: CLion not debugging one of my targets - immediate `Process finished with exit code 0`
body: <p>I'm on a Mac using Clang 6.  I have a project with a few targets and they all worked as expected until recently when suddenly I could not debug my unit tests.  I give the command to debug and it immediately comes back with </p>
  
  <pre><code>Process finished with exit code 0
  Empty test suite.
  </code></pre>
  
  <p>I can <code>run</code> the target from within CLion (or outside of it) and it runs as expected.   I can debug other targets as expected.  </p>
  
  <p>CLion is building the un-debug-able target as expected.   I've created additional CLion configurations with the program and none of them will debug it correctly - whether set up as a "normal" app or as a google test app in CLion.   </p>
  
  <p>I don't have my CLion config files in version control and CLion's local history isn't available on them - the option is greyed out.</p>
  
  <p>I don't know what information to post here and I'm hoping someone else has seen something like this or can guess what I might have done.  I've rebooted my computer as well as "invalidate caches and restart" in CLion.  None of them had any effect.</p>