From: nikic
Operating system:
PHP version: Irrelevant
Package: Scripting Engine problem
Bug Type: Bug
Bug description:Exceptions can leak temporary variables
Description:
------------
The script
<?php
function throwException() { throw new Exception }
function doSomething() { [] + throwException(); }
try { doSomething(); } catch (Exception $e) { }
leaks
/home/nikic/dev/php-src/Zend/zend_vm_execute.h(25625) : Freeing 0xB77ABA44
(44 bytes), script=-
/home/nikic/dev/php-src/Zend/zend_API.c(982) : Actual location (location
was relayed)
=== Total 1 memory leaks detected ===
This generally always happens whenever an exception is thrown while
evaluation an expression which contains (non-scalar) temporary variables.
In the above case the array hash table is leaked.
The reason is that the FREE opcode for the temporary variable is never
executed due to the exception. Exceptions only free temporary loop
variables.
--
Edit bug report at https://bugs.php.net/bug.php?id=62210&edit=1
--
Try a snapshot (PHP 5.4):
https://bugs.php.net/fix.php?id=62210&r=trysnapshot54
Try a snapshot (PHP 5.3):
https://bugs.php.net/fix.php?id=62210&r=trysnapshot53
Try a snapshot (trunk):
https://bugs.php.net/fix.php?id=62210&r=trysnapshottrunk
Fixed in SVN:
https://bugs.php.net/fix.php?id=62210&r=fixed
Fixed in SVN and need be documented:
https://bugs.php.net/fix.php?id=62210&r=needdocs
Fixed in release:
https://bugs.php.net/fix.php?id=62210&r=alreadyfixed
Need backtrace:
https://bugs.php.net/fix.php?id=62210&r=needtrace
Need Reproduce Script:
https://bugs.php.net/fix.php?id=62210&r=needscript
Try newer version:
https://bugs.php.net/fix.php?id=62210&r=oldversion
Not developer issue:
https://bugs.php.net/fix.php?id=62210&r=support
Expected behavior:
https://bugs.php.net/fix.php?id=62210&r=notwrong
Not enough info:
https://bugs.php.net/fix.php?id=62210&r=notenoughinfo
Submitted twice:
https://bugs.php.net/fix.php?id=62210&r=submittedtwice
register_globals:
https://bugs.php.net/fix.php?id=62210&r=globals
PHP 4 support discontinued:
https://bugs.php.net/fix.php?id=62210&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=62210&r=dst
IIS Stability:
https://bugs.php.net/fix.php?id=62210&r=isapi
Install GNU Sed:
https://bugs.php.net/fix.php?id=62210&r=gnused
Floating point limitations:
https://bugs.php.net/fix.php?id=62210&r=float
No Zend Extensions:
https://bugs.php.net/fix.php?id=62210&r=nozend
MySQL Configuration Error:
https://bugs.php.net/fix.php?id=62210&r=mysqlcfg
