Bug #81251 [NEW]: Memory leak with datetime, serialization, and require

From: lyrixx at lyrixx dot info Operating system: linux PHP version: 8.0.8 Package: *General Issues Bug Type: Bug Bug description:Memory leak with datetime, serialization, and require Description: ------------ When one require a PHP script, that unserialize some data with an instance of DateTime in it, a memory leak occurs Test script: --------------- <?php class Foobar { public function __construct( // If this property is removed => No leak public DateTime $d, ) { } } for ($i=0; $i < 10000; $i++) { $foobar = new Foobar(new \DateTime()); // 1. Leak when "require" is involved $file = '/tmp/test-serialized.php'; file_put_contents($file, sprintf("<?php return unserialize(base64_decode('%s'));\n", base64_encode(serialize($foobar)))); $o = require $file; // 2. No leak in this case // unserialize(serialize($foobar)); if ($i % 1000 === 0) { printf("%.2fMb\n", memory_get_usage() / 1024 / 1024); } } Expected result: ---------------- 0.38Mb 0.38Mb 0.38Mb 0.38Mb 0.38Mb 0.38Mb 0.38Mb 0.38Mb 0.38Mb 0.38Mb Actual result: -------------- 0.38Mb 0.66Mb 0.90Mb 1.23Mb 1.47Mb 1.87Mb 2.11Mb 2.36Mb 2.60Mb 3.16Mb -- Edit bug report at https://bugs.php.net/bug.php?id=81251&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=81251&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=81251&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=81251&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=81251&r=needscript Try newer version: https://bugs.php.net/fix.php?id=81251&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=81251&r=support Expected behavior: https://bugs.php.net/fix.php?id=81251&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=81251&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=81251&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=81251&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=81251&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=81251&r=dst IIS Stability: https://bugs.php.net/fix.php?id=81251&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=81251&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=81251&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=81251&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=81251&r=mysqlcfg