Bug #66172 [NEW]: Garbage collector won't collect circullar dependecy if SPL classes involved

From: aleksey at roave dot com Operating system: Any PHP version: 5.5.6 Package: Scripting Engine problem Bug Type: Bug Bug description:Garbage collector won't collect circullar dependecy if SPL classes involved Description: ------------ This affects all versions with gc, 5.3 to 5.5 Tried script on http://3v4l.org/KmGDj I can't tell what happens internally, but it looks like garbage collector will not detect and collect circular dependencies if there are SPL classes involved (i suspect other built-in classes are affected too) Test script: --------------- https://gist.github.com/Xerkus/7562464/raw/f6d0ff3f1fbc24a3a3ca99ac974571748103ab51/test.php Expected result: ---------------- Memory stays at about the same level Actual result: -------------- Used memory grows constantly -- Edit bug report at https://bugs.php.net/bug.php?id=66172&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=66172&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=66172&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=66172&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=66172&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=66172&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=66172&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=66172&r=needscript Try newer version: https://bugs.php.net/fix.php?id=66172&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=66172&r=support Expected behavior: https://bugs.php.net/fix.php?id=66172&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=66172&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=66172&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=66172&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=66172&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=66172&r=dst IIS Stability: https://bugs.php.net/fix.php?id=66172&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=66172&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=66172&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=66172&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=66172&r=mysqlcfg