Bug #53454 [NEW]: Memory leak when using non-static class member as static one or inversely

From: Operating system: Linux gentoo PHP version: 5.2.14 Package: Performance problem Bug Type: Bug Bug description:Memory leak when using non-static class member as static one or inversely Description: ------------ I had some memory overflow errors. I logged the memory usage step by step and then I see a difference of 50Mo between two logs. In the method called between this two logs, I used a static class attribute as a non-static one (with $this). The modification on the attribute took effect but triggered an "Interoperability or Compatibility Notice". I fixed this error and I had a gain of 50 Mo!! I have the same bug with a non-static method used as a static method (with self::). I had a gain of 90Mo because this method was really far away in the code. It is a pretty harsh punishment for a compatibility error ;-) Test script: --------------- class LeakTester { private static $nTest = 0; public function Test() { $this->nTest++; echo $this->nTest."<br/>\n"; } } // ---> Test $oTest = new LeakTester(); $oTest->Test(); echo memory_get_usage()."<br/>\n"; // (1) $oTest->Test(); echo memory_get_usage()."<br/>\n"; // (2) > (1) Expected result: ---------------- (2) should be equal to (1) Actual result: -------------- (2) is really greater than (1) -- Edit bug report at http://bugs.php.net/bug.php?id=53454&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=53454&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=53454&r=trysnapshot53 Try a snapshot (trunk): http://bugs.php.net/fix.php?id=53454&r=trysnapshottrunk Fixed in SVN: http://bugs.php.net/fix.php?id=53454&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=53454&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=53454&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=53454&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=53454&r=needscript Try newer version: http://bugs.php.net/fix.php?id=53454&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=53454&r=support Expected behavior: http://bugs.php.net/fix.php?id=53454&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=53454&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=53454&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=53454&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=53454&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=53454&r=dst IIS Stability: http://bugs.php.net/fix.php?id=53454&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=53454&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=53454&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=53454&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=53454&r=mysqlcfg