title: Uncaught ErrorException: preg_match_all(): JIT compilation failed: no more memory
body: <p>I just upgraded my PHP on macOS from 7.2 to 7.3 and while trying to run <code>composer update</code> on a project of mine, I get the error;</p>
  
  <pre><code>PHP Fatal error:  Uncaught ErrorException: preg_match_all(): JIT compilation failed: no more memory
  </code></pre>
  
  <p>I've run a few Google searches; it looks like the issue is new, and I couldn't find any working documentation online.</p>
  
  <p>Is this an issue related to PHP 7.3 and Composer? If so, how do I resolve it? Thanks for your help in advance.</p>