From: giovanni at giacobbi dot net Operating system: linux PHP version: 4.4.4 PHP Bug Type: Reproducible crash Bug description: double free problem after 64k iterations
Description: ------------ The following code snippet produces a double free error. I don't think my glibc/linux versions matter, anyway I can provide them on request. An interesting thing is that the bug manifests itself only at the 65536th iteration. Removing any reference to the $index variable doesn't reproduce the bug any longer. Reproduce code: --------------- function m($index) { is_int($index); global $x; return $x[$index]; } $i = 0; $x = array("x"); while (m($i)) { $p[] = m($i); } Actual result: -------------- *** glibc detected *** php: double free or corruption (fasttop): 0x09d89a08 *** -- Edit bug report at http://bugs.php.net/?id=40181&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=40181&r=trysnapshot44 Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=40181&r=trysnapshot52 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=40181&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=40181&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=40181&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=40181&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=40181&r=needscript Try newer version: http://bugs.php.net/fix.php?id=40181&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=40181&r=support Expected behavior: http://bugs.php.net/fix.php?id=40181&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=40181&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=40181&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=40181&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=40181&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=40181&r=dst IIS Stability: http://bugs.php.net/fix.php?id=40181&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=40181&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=40181&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=40181&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=40181&r=mysqlcfg