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Bug #56667 (PHP5.1RC4) Apache Sig11 when class is read from cache
Submitted: 2005-11-20 18:17 UTC Modified: 2006-02-24 02:02 UTC
From: nigrez at nius dot waw dot pl Assigned: rasmus (profile)
Status: Closed Package: APC (PECL)
PHP Version: 5_1 CVS-2005-11-20 OS: Linux 2.6.14 (dist: PLD)
Private report: No CVE-ID: None
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 [2005-11-20 18:17 UTC] nigrez at nius dot waw dot pl 
Description:
------------
Apache gets sig11 while using PHP5.1RC4 while loading a 
class previously cached. This happens evry random() 
request, ussualy first after cache. The offending part of 
the code is the 'static' modifier. W/o it everything works 
fine. 

Reproduce code:
---------------
<?php

	class nefrTheme  {
		public static $objectName = __CLASS__;
	}

	class nt extends nefrTheme { }

	$n = new nt();

?>

Expected result:
----------------
Plain page loaded.  

Actual result:
--------------
Apache error_log: 
[Mon Nov 21 00:04:52 2005] [notice] child pid 17655 exit 
signal Segmentation fault (11)

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 [2005-11-20 18:40 UTC] rasmus@php.net 
I should probably have a big disclaimer on the CVS tree right now.  It is not in a sane state right now.  Grab version 3.0.8 if you need it to work reliably right now.
 [2005-11-21 14:20 UTC] nigrez at nius dot waw dot pl 
Well.. Accualy I used stable APC - latest: 3.0.8. It was 
the PHP which was unstable - 4th RC of 5.1.
 [2005-11-21 14:23 UTC] rasmus@php.net 
oh, oops, mistook the version thig there to mean CVS version of APC.

And I think we fixed static properties in CVS, but I will check that and get back to this report soon.
 [2006-01-05 16:02 UTC] gopalv82 at yahoo dot com 
<i> And I think we fixed static properties in CVS</i>

I thought so too, but looks like there is a new member in zend_class_entry which is called default_static_members which is not copied over to shared memory.

Have a fix for this based on INH_FIX, will merge into HEAD. Test and send a patch
 [2006-02-24 02:02 UTC] rasmus@php.net 
This should be fixed in CVS now.
 
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