#42758 [NEW]: memory leak in class method calls

From: benoit dot heinrich at swisscom dot com Operating system: linux PHP version: 4.4.7 PHP Bug Type: Unknown/Other Function Bug description: memory leak in class method calls Description: ------------ Hi, There is a memory leak when calling a method of a class. I know the bug is fixed in PHP5 but for business reasons we can't afford to upgrade to php5 right now. Is that possible to fix this very annoying issue? /Benoit Reproduce code: --------------- <?php class ClassA { var $member; function setMember($value) { $this->member = $value; } } $obj =& new ClassA(); $mem = memory_get_usage(); for ($i=0; $i< 1000000; $i++) $obj->member = null; print "Direct property set memory leak is " . number_format(memory_get_usage()-$mem) . "\n"; $mem = memory_get_usage(); for ($i=0; $i< 1000000; $i++) $obj->setMember(null); print "Method call memory leak is " . number_format(memory_get_usage()-$mem) . "\n"; ?> Expected result: ---------------- Direct property set memory leak is 0 Method call memory leak is 0 Actual result: -------------- Direct property set memory leak is 128 Method call memory leak is 8,000,040 -- Edit bug report at http://bugs.php.net/?id=42758&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=42758&r=trysnapshot44 Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=42758&r=trysnapshot52 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=42758&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=42758&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=42758&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=42758&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=42758&r=needscript Try newer version: http://bugs.php.net/fix.php?id=42758&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=42758&r=support Expected behavior: http://bugs.php.net/fix.php?id=42758&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=42758&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=42758&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=42758&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=42758&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=42758&r=dst IIS Stability: http://bugs.php.net/fix.php?id=42758&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=42758&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=42758&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=42758&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=42758&r=mysqlcfg