From f6ecd626815cd7faf0208c78152fefe6d12c5d53 Mon Sep 17 00:00:00 2001
From: demeritcowboy <demeritcowboy@hotmail.com>
Date: Thu, 18 Aug 2022 20:18:29 -0400
Subject: [PATCH] use unoptimized dispatcher

---
 Civi/Core/CiviEventDispatcher.php        |  3 +--
 Civi/Core/UnoptimizedEventDispatcher.php | 18 ++++++++++++++++++
 2 files changed, 19 insertions(+), 2 deletions(-)
 create mode 100644 Civi/Core/UnoptimizedEventDispatcher.php

diff --git a/Civi/Core/CiviEventDispatcher.php b/Civi/Core/CiviEventDispatcher.php
index 11c7c048a7..054bd76675 100644
--- a/Civi/Core/CiviEventDispatcher.php
+++ b/Civi/Core/CiviEventDispatcher.php
@@ -4,7 +4,6 @@ namespace Civi\Core;
 
 use Civi\Core\Event\GenericHookEvent;
 use Civi\Core\Event\HookStyleListener;
-use Symfony\Component\EventDispatcher\EventDispatcher;
 use Symfony\Component\EventDispatcher\EventSubscriberInterface;
 
 /**
@@ -61,7 +60,7 @@ class CiviEventDispatcher implements CiviEventDispatcherInterface {
    * Constructor
    */
   public function __construct() {
-    $this->dispatcher = new EventDispatcher();
+    $this->dispatcher = new UnoptimizedEventDispatcher();
   }
 
   /**
diff --git a/Civi/Core/UnoptimizedEventDispatcher.php b/Civi/Core/UnoptimizedEventDispatcher.php
new file mode 100644
index 0000000000..01fa40bc93
--- /dev/null
+++ b/Civi/Core/UnoptimizedEventDispatcher.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace Civi\Core;
+
+use Symfony\Component\EventDispatcher\EventDispatcher;
+
+/**
+ * Class UnoptimizedEventDispatcher
+ * @package Civi\Core
+ *
+ * Since symfony 4.3, the EventDispatcher contains optimization code that
+ * converts all functions into closures. This causes test runs to crash.
+ * Until we can figure out why this simply skips the optimization which is
+ * roughly the same as before 4.3. The optimization is skipped if the object
+ * being instantiated is not the base class EventDispatcher (https://github.com/symfony/event-dispatcher/blob/75f99d7489409207d09c6cd75a6c773ccbb516d5/EventDispatcher.php#L41)
+ */
+class UnoptimizedEventDispatcher extends EventDispatcher {
+}
-- 
2.25.1