Bug #52902 [NEW]: Recursive References Leak Memory

From: Operating system: Fedora 12 PHP version: 5.3.3 Package: Class/Object related Bug Type: Bug Bug description:Recursive References Leak Memory Description: ------------ The behavior originally reported in #33595 still exists, namely, "Objects with recursive references leak memory." Test script: --------------- class A { function __construct () { $this->b = new B($this); } } class B { function __construct ($parent = NULL) { $this->parent = $parent; } } echo memory_get_usage() . "\n"; for ($i = 0 ; $i < 1000000 ; $i++) { $a = new A(); } echo memory_get_usage() . "\n"; Expected result: ---------------- Memory usage should remain relatively constant. For example, if you change the one line to: "$this->parent = clone $parent;" Then the output is: 632216 632392 Actual result: -------------- Memory usage increases with each newly instantiated object. Actual output: 631976 1756792 -- Edit bug report at http://bugs.php.net/bug.php?id=52902&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=52902&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=52902&r=trysnapshot53 Try a snapshot (trunk): http://bugs.php.net/fix.php?id=52902&r=trysnapshottrunk Fixed in SVN: http://bugs.php.net/fix.php?id=52902&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=52902&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=52902&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=52902&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=52902&r=needscript Try newer version: http://bugs.php.net/fix.php?id=52902&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=52902&r=support Expected behavior: http://bugs.php.net/fix.php?id=52902&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=52902&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=52902&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=52902&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=52902&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=52902&r=dst IIS Stability: http://bugs.php.net/fix.php?id=52902&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=52902&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=52902&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=52902&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=52902&r=mysqlcfg