Fail to parse a class named "Enum"

[qMBQx8GH]

PHP Version

8.0 8.1

Code Example

class Enum{}

Actual Behavior

2023/12/15 09:35:40 syntax error: unexpected T_ENUM, expecting T_STRING at line 1

Expected Behavior

[max@max ~/src/php-parser-test]$ cat test.php
<?php
class Enum {}
[max@max ~/src/php-parser-test]$ php8.0 -l test.php
No syntax errors detected in test.php
[max@max ~/src/php-parser-test]$ php8.1 -l test.php
No syntax errors detected in test.php