Merge branch '4.3' into 4.4

* 4.3:
  Fix displaying anonymous classes on PHP >= 7.4.2

Author: nicolas-grekas

ErrorHandler.php

@@ -761,7 +761,7 @@ private function cleanTrace(array $backtrace, int $type, string $file, int $line
      */
     private function parseAnonymousClass(string $message): string
     {
-        return preg_replace_callback('/class@anonymous\x00.*?\.php(?:0x?|:)[0-9a-fA-F]++/', static function ($m) {
+        return preg_replace_callback('/class@anonymous\x00.*?\.php(?:0x?|:[0-9]++\$)[0-9a-fA-F]++/', static function ($m) {
             return class_exists($m[0], false) ? get_parent_class($m[0]).'@anonymous' : $m[0];
         }, $message);
     }

Exception/FlattenException.php

@@ -196,7 +196,7 @@ public function getMessage(): string
     public function setMessage($message): self
     {
         if (false !== strpos($message, "class@anonymous\0")) {
-            $message = preg_replace_callback('/class@anonymous\x00.*?\.php(?:0x?|:)[0-9a-fA-F]++/', function ($m) {
+            $message = preg_replace_callback('/class@anonymous\x00.*?\.php(?:0x?|:[0-9]++\$)[0-9a-fA-F]++/', function ($m) {
                 return class_exists($m[0], false) ? get_parent_class($m[0]).'@anonymous' : $m[0];
             }, $message);
         }