[php-src] Issue #7821: Can't use inherited constant value via 'self' in enum case value

Issue: https://github.com/php/php-src/issues/7821 Comment Author: SerafimArts Found another interesting feature-bug: ```php class Example { final public const TEST = 42; } enum ExampleEnum: int { case CASE = Example::TEST; } ``` 1) If you run the code for the first time, then it works 2) If you run the code again (PHP 8.1.4), an error occurs: Enum case value must be compile-time evaluatable There is a suspicion that this is somehow related to opcache: ```sh php test.php -dopcache.jit_buffer_size=0 -dopcache.enable=1 -dopcache.enable_cli=0 // - First execution 42 // - Second execution 42 // - Third execution 42 php test.php -dopcache.jit_buffer_size=0 -dopcache.enable=1 -dopcache.enable_cli=1 // - First execution 42 // - Second execution: Enum case value must be compile-time evaluatable // - Third execution: Enum case value must be compile-time evaluatable ``` P.S. ``` PHP 8.1.4 (cli) (built: Apr 4 2022 13:30:33) (NTS) Copyright (c) The PHP Group Zend Engine v4.1.4, Copyright (c) Zend Technologies with Zend OPcache v8.1.4, Copyright (c), by Zend Technologies ```