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Bug #30509 Infinite recursion in Engine
Submitted: 2004-10-21 06:22 UTC Modified: 2004-10-21 15:59 UTC
From: azmoo at azmoo dot net Assigned:
Status: Not a bug Package: Scripting Engine problem
PHP Version: 5.0.2 OS: Linux, Fedora Core 1 and 2
Private report: No CVE-ID: None
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 [2004-10-21 06:22 UTC] azmoo at azmoo dot net 
Description:
------------
When running the provided code, the second time that the recursive function, recurseQueries() is called, it seems to send the Zend Engine into infinite recursion. Apache, both versions 1.3 and version 2, then Segfaults. Error log from apache is as follows:

[Thu Oct 21 13:34:26 2004] [notice] child pid 18344 exit signal Segmentation fault (11)

This happens on PHP versions 5.01 and 5.02.

Reproduce code:
---------------
http://www.azmoo.net/work/SQLParser.inc.phps

Expected result:
----------------
Should have a DOMDocument object with data in a heirarchical format. Apache should not crash.

Actual result:
--------------
Segfault.

Backtrace located at http://www.azmoo.net/work/sql_backtrace.txt

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 [2004-10-21 09:20 UTC] derick@php.net 
Sorry, but your problem does not imply a bug in PHP itself.  For a
list of more appropriate places to ask for help using PHP, please
visit http://www.php.net/support.php as this bug system is not the
appropriate forum for asking support questions. 

Thank you for your interest in PHP.

This is a bug in your code.
 [2004-10-21 15:59 UTC] azmoo at azmoo dot net 
This is not a bug in my code. It enters the recursive function once before segfaulting and the backtrace indicates a bug in the Zend Engine. We have tested this by outputting to a file each time the recursive function is called, and it is only outputting once. Try it yourself, the provided source will demonstrate the problem.
 
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