zend.opcache: Warning Internal error: wrong size calculation

[HannahVernon]

Description

zend.OPCache on PHP 8.3.8 NTS on Win32 is throwing the following error repeatedly, even after clearing the cache:

Warning Internal error: wrong size calculation: C:\path-to-cache\cache\docket-cache\93da65a9fd00-b287b31d338a.php start=0x000002c2ee401040, end=0x000002c2ee472590, real=0x000002c2ee468e30

The 93da65a9fd00-b287b31d338a.php file is listed as zero size in the cache folder. Deleting the file results in opcache recreating it, again with zero size.

The php.ini section dealing with opcache settings:

[opcache]
opcache.enable=1
opcache.enable_cli=0
opcache.memory_consumption=256
opcache.interned_strings_buffer=16
opcache.max_accelerated_files=10000
opcache.max_wasted_percentage=5
opcache.use_cwd=1
opcache.validate_timestamps=1
opcache.revalidate_freq=2
opcache.revalidate_path=0
opcache.save_comments=1
opcache.record_warnings=0
opcache.enable_file_override=1
opcache.optimization_level=0x7FFEBFFF
;opcache.dups_fix=0
;opcache.blacklist_filename=
;opcache.max_file_size=0
;opcache.consistency_checks=0
opcache.force_restart_timeout=180
opcache.error_log=C:\windows\temp\php_opcache_err.log
opcache.log_verbosity_level=2
;opcache.preferred_memory_model=
;opcache.protect_memory=0
;opcache.restrict_api=
;opcache.mmap_base=
;opcache.cache_id=
opcache.file_cache=C:\windows\temp\php_op_cache
;opcache.file_cache_only=0
;opcache.file_cache_consistency_checks=1
opcache.file_cache_fallback=1
;opcache.huge_code_pages=1
;opcache.validate_permission=0
;opcache.validate_root=0
;opcache.opt_debug_level=0
;opcache.preload=
;opcache.preload_user=
;opcache.file_update_protection=2
;opcache.lockfile_path=/tmp

PHP Version

PHP 8.3.8 NTS Win32 x64

Operating System

Windows Server 2022 Standard 21H2, build 20348.2527

[iluuu1994]

Hi @HannahVernon! Can you reproduce the warning with a small script? Otherwise, it will be very hard to diagnose the issue.

[HannahVernon]

The file it is currently reporting as problematic is:

c90c7b354245-f3472753e77b.zip

This is the error around that particular file:

Sat Jun 22 17:56:29 2024 (10096): Warning Internal error: wrong size calculation: C:\path-to-file\docket-cache\c90c7b354245-f3472753e77b.php start=0x0000022afa0e7ec0, end=0x0000022afa0e8a28, real=0x0000022afa0e88f8

Contents of the file are:

<?php 
return array (
  'timestamp' => 1719096989,
  'site_id' => 1,
  'group' => 'term-queries',
  'key' => 'get_terms:c8817434f2120651a8ea3b4f240431ab:0.37558700 1719092969',
  'type' => 'array',
  'timeout' => 1719183389,
  'data' => 
  array (
    0 => 
    (object) array(
       'term_id' => 10,
       'object_id' => 3,
    ),
    1 => 
    (object) array(
       'term_id' => 13,
       'object_id' => 3,
    ),
    2 => 
    (object) array(
       'term_id' => 12,
       'object_id' => 3,
    ),
    3 => 
    (object) array(
       'term_id' => 11,
       'object_id' => 3,
    ),
  ),
);
/*@DOCKET_CACHE_EOF*/

Unfortunately I'm quite new to opcache, so I'm not entirely sure how to test that file, or indeed if the problem is with WordPress' Docket Cache plugin itself.