#26584 [Com]: Class member - array key overflow
| From: | bartek-no-uce at bulzak dot com | Date: | Thu, 11 Dec 2003 15:16:16 +0000 |
| Subject: | #26584 [Com]: Class member - array key overflow | ||
| References: | 1 | Groups: | php.bugs |
| Request: | Send a blank email to php-bugs+get-51953@lists.php.net to get a copy of this message | ||
ID: 26584
Comment by: bartek-no-uce at bulzak dot com
Reported By: sean@php.net
Status: Verified
Bug Type: Class/Object related
Operating System: Linux 2.4.22 i686
PHP Version: 4CVS, 5CVS
New Comment:
It gets even more interesting. Seems like array() doesn't behave the
same way wheter or not it's being called from within an object, but if
you do a direct array assignment (brakets) everything goes back to
normal.
source: http://dev.rdesol.com/helo/class_array_bug.phps
running code: http://dev.rdesol.com/helo/class_array_bug.php
Bartek Bulzak
Previous Comments:
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[2003-12-10 10:04:35] sean@php.net
Description:
------------
See attached code.
It seems that when assigning arrays in a class definition, it's
possible to overflow the array key, without any sort of
warning/notice/etc.
This only happens in a class def, and not to a "global" namespace
array.
It's odd that the same code isn't used for both regular array
constructs, and object array constructs (Zend Engine).
ZE2 may fix this problem. Has not been tested.
The logical overflow threshold is between 2147483647 and 2147483648
(where 2147483648 is a 32bit (singed) integer value of -0, if I'm not
mistaken -- or 0x80000000).
Note: this affects more than just negative keys as seen in code:VAL3.
I don't have time to jump into the php source right now (nor am I truly
qualified to do so).
Please let me know if/when you need additional details.
S
(sean@php.net)
Reproduce code:
---------------
http://sean.caedmon.net/php/class_array_bug.phps
(http://sean.caedmon.net/php/class_array_bug.php)
Expected result:
----------------
(see code)
Actual result:
--------------
(see code)
------------------------------------------------------------------------
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Edit this bug report at http://bugs.php.net/?id=26584&edit=1