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

Edit report at https://bugs.php.net/bug.php?id=66172&edit=1 ID: 66172 Updated by: colder@php.net Reported by: aleksey at roave dot com Summary: Garbage collector won't collect circullar dependecy if SPL classes involved Status: Assigned Type: Bug Package: Scripting Engine problem Operating System: Any PHP Version: 5.5.6 Assigned To: colder Block user comment: N Private report: N New Comment: I have a patch here: https://github.com/colder/php-src/commit/abf152b260dbcc1da1eb850c9f10098b812c67d4 It indeed affects any internal class with hidden (not property-based) state that is not exposed via get_gc, which includes most SPL classes.. This patch is only about SplHeaps/Priority Queues, I will need more time to generalize. Previous Comments: ------------------------------------------------------------------------ [2013-11-26 03:22:01] aleksey at roave dot com Sorry, linked wrong test run http://3v4l.org/21Tdf ------------------------------------------------------------------------ [2013-11-26 03:07:15] aleksey at roave dot com 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 this bug report at https://bugs.php.net/bug.php?id=66172&edit=1