#46344 [NEW]: Possible memory-leak. autoload not always called

From: troelskn at gmail dot com Operating system: FreeBSD 7.0-RELEASE-p5 PHP version: 5.2.6 PHP Bug Type: SPL related Bug description: Possible memory-leak. autoload not always called Description: ------------ After upgrading to a new server, we started seeing very inexplicable bugs in the system. I *think* I traced it down to the autoload functionality. In some situations, the autoloader doesn't seem to be triggered. Reproducing the bug is extremely hard; If I alter the code of the classloader, the error goes away. Also, I can't reproduce it on other systems. I am not sure if this is a problem with SPL, with PHP or perhaps with PDO, but my guess is that spl_autoload_register somehow allocates memory for the callback wrongly, allowing other code to overwrite it. Full system details follows: $ php --version PHP 5.2.6 with Suhosin-Patch 0.9.6.2 (cli) (built: Aug 29 2008 10:03:19) Copyright (c) 1997-2008 The PHP Group Zend Engine v2.2.0, Copyright (c) 1998-2008 Zend Technologies $ uname -a FreeBSD xxx.xxx.dk 7.0-RELEASE-p5 FreeBSD 7.0-RELEASE-p5 #0: Wed Oct 1 07:51:58 UTC 2008 root@amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64 Reproduce code: --------------- http://pastebin.com/f4625a564 In addition, you need a file datadictionary.php, containing: class DataDictionary {} Expected result: ---------------- OK .. class has loaded Actual result: -------------- PHP Fatal error: Class 'DataDictionary' not found in /usr/home/tkn/test.php on line 89 -- Edit bug report at http://bugs.php.net/?id=46344&edit=1 -- Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=46344&r=trysnapshot52 Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=46344&r=trysnapshot53 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=46344&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=46344&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=46344&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=46344&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=46344&r=needscript Try newer version: http://bugs.php.net/fix.php?id=46344&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=46344&r=support Expected behavior: http://bugs.php.net/fix.php?id=46344&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=46344&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=46344&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=46344&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=46344&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=46344&r=dst IIS Stability: http://bugs.php.net/fix.php?id=46344&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=46344&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=46344&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=46344&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=46344&r=mysqlcfg