Edit report at https://bugs.php.net/bug.php?id=50027&edit=1
ID: 50027 Comment by: brian dot feaver at sellingsource dot com Reported by: phpbugs at colin dot guthr dot ie Summary: $this becomes a non-object Status: Closed Type: Bug Package: Scripting Engine problem Operating System: Mandriva Linux (Cooker x86_64) PHP Version: 5.3.1RC2 Assigned To: dmitry Block user comment: N Private report: N New Comment: Looking through the SVN log and the change log for releases since this was fixed, I can't find when this was released, nor the commit to SVN that fixed it. What commit fixed it and what release was this fixed in? Previous Comments: ------------------------------------------------------------------------ [2011-01-16 22:10:12] s...@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. ------------------------------------------------------------------------ [2010-11-16 11:10:35] phpbugs at colin dot guthr dot ie So far so good! I updated to PHP 5.3.3 again and reproduced the error (and got four nice core dumps), then applied the patch and tried to reproduce again and so far, I'm coreless. Thanks for highlighting the patch. Just with this bug had lead to more investigations earlier as I've had to jump through hoops to avoid updating to PHP 5.3.x because of this problem. Still hopefully looking good now :) ------------------------------------------------------------------------ [2010-11-16 09:38:23] bsteinbrink at saltation dot de We encountered this bug yesterday (we could reproduce it quite easily with our code, but unfortunately we cannot disclose it), debugged it, found out that it was due to the GC corrupting the std_object_handlers prototype and once we knew that, we checked with the svn repo and saw that that was fixed in r303016. The corruption that happens is that the read_property field of std_object_handlers gets set to NULL, because the GC treated the handler as a zval. The report from lukas about the failure to set a property seems like an independent bug, as a different field got corrupted (and he had the gc turned off anyway). ------------------------------------------------------------------------ [2010-11-10 15:44:51] lukas at twobits dot cz Bad news. Just got the same bug again, with PHP 5.3.3 and GC switched OFF. Again, only one Apache process fails. The process begun failing immediately after Apache restart. A simple reproduce class: Reproduce code: --------------- class Test { private $data = NULL; public function __construct($data) { echo "<pre>"; var_dump($this); echo "</pre>"; $this->data = $data; } public function getData() { echo "<pre>"; var_dump($this); echo "</pre>"; return $this->data; } } echo "PID: " . getmypid(); $foo = new Test('Hello'); echo $foo->getData(); Correct output: --------------- PID: 22839 object(Test)#1 (1) { ["data":"Test":private]=> NULL } object(Test)#1 (1) { ["data":"Test":private]=> string(5) "Hello" } Hello Malfunctioning Apache process output: ------------------------------------- PID: 22818 object(Test)#1 (1) { ["data":"Test":private]=> NULL } Warning: Attempt to assign property of non-object in /var/www/html/testthis.php on line 16 object(Test)#1 (1) { ["data":"Test":private]=> NULL } ------------------------------------------------------------------------ [2010-05-15 19:06:58] phpbugs at colin dot guthr dot ie Just for reference, I just tested and this bug is still a problem with 5.3.2. ------------------------------------------------------------------------ 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=50027 -- Edit this bug report at https://bugs.php.net/bug.php?id=50027&edit=1
