Bug #48781 [Csd->Asn]: Cyclical garbage collector memory leak

Edit report at https://bugs.php.net/bug.php?id=48781&edit=1 ID: 48781 User updated by: nate at frickenate dot com Reported by: nate at frickenate dot com Summary: Cyclical garbage collector memory leak -Status: Closed +Status: Assigned Type: Bug Package: Scripting Engine problem Operating System: Debian 5.0 kernel 2.6.24-23-xen PHP Version: 5.3.0 Assigned To: dmitry Block user comment: N Private report: N New Comment: Confirmed, this bug has regressed. Since it was originally fixed, there are few commits to zend_execute.c where that fix was effectuated. http://svn.php.net/viewvc/php/php-src/branches/PHP_5_3/Zend/zend_execute.c? r1=293985&r2=309342 This shows all changes to that file since the fix (inclusive). The added line at 273 was the fix for this bug. But then we see the other changes made around this fix, one of which must have caused the cyclical fix to be no longer useful. Previous Comments: ------------------------------------------------------------------------ [2011-09-13 11:28:12] nex2hex at ya dot ru On php 5.38 (win32) this bug still exists ------------------------------------------------------------------------ [2011-04-03 02:24:23] jas at rephunter dot net I believe this bug has regressed. We only recently upgraded from 5.3.2 to 5.3.5. And now several scripts are broken that have been working for years. By adding the unset of the variable at the end of the loop as shown in the first snippet below, the problem is fixed. So I believe that the symptom has regressed, although not necessarily the cause. ------------------------------------------------------------------------ [2010-04-20 14:55:01] dmitry@php.net Note that your test and expectation are not completely correct because the actual garbage collection occurs at undefined moments of time. As result the memory usage on different iteration will be different. To avoid this ambiguity add explicit call to gc_collect_cycles() before printing memory usage. ------------------------------------------------------------------------ [2010-04-20 14:50:54] dmitry@php.net This bug has been fixed in SVN. Snapshots of the sources are packaged every three hours; this change will be in the next snapshot. You can grab the snapshot at http://snaps.php.net/. Thank you for the report, and for helping us make PHP better. ------------------------------------------------------------------------ [2010-04-20 14:30:38] dmitry@php.net Automatic comment from SVN on behalf of dmitry Revision: http://svn.php.net/viewvc/?view=revision&revision=298213 Log: Fixed bug #48781 (Cyclical garbage collector memory leak) ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at https://bugs.php.net/bug.php?id=48781 -- Edit this bug report at https://bugs.php.net/bug.php?id=48781&edit=1