Bug #76523 [NEW]: PHP Leaks memory when utilizing objects

From: mimipim at abv dot bg Operating system: CentOS, Debian, Maybe any PHP version: 7.2.7 Package: Performance problem Bug Type: Bug Bug description:PHP Leaks memory when utilizing objects Description: ------------ I have found that PHP leaks memory simply by creating empty class object. The leakage happens only on first initiation of the exact class type, each next new object will not leak any more. Test script: --------------- Check out the live test script: https://3v4l.org/T5qsG It shows you that after initialization of the fist object and destroying it the memory is not freed up. Strangely if you uncomment the echo statement the leakage is not appearing. HHVM reports the same memory in all cases, just as expected. Expected result: ---------------- All memory reports to show the same memory usage. Actual result: -------------- After the first memory report are following reports of used RAM bigger than expected. -- Edit bug report at https://bugs.php.net/bug.php?id=76523&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=76523&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=76523&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=76523&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=76523&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=76523&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=76523&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=76523&r=needscript Try newer version: https://bugs.php.net/fix.php?id=76523&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=76523&r=support Expected behavior: https://bugs.php.net/fix.php?id=76523&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=76523&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=76523&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=76523&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=76523&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=76523&r=dst IIS Stability: https://bugs.php.net/fix.php?id=76523&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=76523&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=76523&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=76523&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=76523&r=mysqlcfg