#28734 [Opn]: Operator = changes structure of self-referencing arrays
| From: | curt@php.net | Date: | Sun, 13 Jun 2004 03:04:27 +0000 |
| Subject: | #28734 [Opn]: Operator = changes structure of self-referencing arrays | ||
| References: | 1 | Groups: | php.bugs |
| Request: | Send a blank email to php-bugs+get-60840@lists.php.net to get a copy of this message | ||
ID: 28734
Updated by: curt@php.net
Reported By: tomas_matousek at hotmail dot com
Status: Open
Bug Type: Scripting Engine problem
Operating System: WinXP
PHP Version: 5.0.0RC2
New Comment:
Perhaps this can help track down the problem.
php 5.0.0RC3-dev:
[snip access array ouptut]
[4] => Array
(
[0] => 1
[1] => 2
[2] => 3
[3] => 4
[4] => Array
*RECURSION*
)
)
)
)
/usr/home/curt/cvs/php/php-src/Zend/zend_execute.c(662) : Freeing
0x083C4208 (16 bytes), script=2873.php
/usr/home/curt/cvs/php/php-src/Zend/zend_execute.c(3413) : Freeing
0x083C4150 (35 bytes), script=2873.php
/usr/home/curt/cvs/php/php-src/Zend/zend_hash.c(377) : Actual location
(location was relayed)
Last leak repeated 3 times
/usr/home/curt/cvs/php/php-src/Zend/zend_execute.c(3382) : Freeing
0x083C410C (16 bytes), script=2873.php
Last leak repeated 3 times
/usr/home/curt/cvs/php/php-src/Zend/zend_execute.c(3362) : Freeing
0x083C4A6C (32 bytes), script=2873.php
/usr/home/curt/cvs/php/php-src/Zend/zend_hash.c(157) : Actual location
(location was relayed)
Last leak repeated 1 time
=== Total 11 memory leaks detected ===
Previous Comments:
------------------------------------------------------------------------
[2004-06-11 19:40:24] imprestavel at gameguru dot com dot br
Tested PHP 5.0.0 RC3 and latest build (200406111430) under Windows2000
and had the same problem
------------------------------------------------------------------------
[2004-06-11 09:38:37] tomas_matousek at hotmail dot com
Don't know how that is possible in your version of PHP 5.0.0 RC3, but
in mine (I'm testing RC3 available on www.php.net not the latest
version from CVS) the bug is still there (result is the same as I
described in "Actual Result").
------------------------------------------------------------------------
[2004-06-11 01:43:58] D dot Kingma at jool dot nl
Results on RC3:
Array
(
[0] => 1
[1] => Z
[2] => 3
[3] => 4
[4] => Array
(
[0] => 1
[1] => Z
[2] => 3
[3] => 4
[4] => Array
*RECURSION*
)
)
Seems as aspected results
------------------------------------------------------------------------
[2004-06-10 20:46:39] tomas_matousek at hotmail dot com
Description:
------------
Create an array $b and set some of its item to reference the array
itself by =& operator. Then assign this array to some other variable.
This assignment (*) makes something wrong in the array $b because if
you change $b's items after this assignment the structure of array $b
is changed.
However, if that assignment (*) doesn't take place the behavior is
correct.
Reproduce code:
---------------
$b = array(1,2,3,4);
$b[4] =& $b;
// this assignment probably makes changes to $b's structure
$c = $b;
$b[1] = 'X';
$b[4][1] = 'Y';
$b[4][4][1] = 'Z';
print_r($b);
Expected result:
----------------
Array
(
[0] => 1
[1] => Z
[2] => 3
[3] => 4
[4] => Array
*RECURSION*
)
Actual result:
--------------
Array
(
[0] => 1
[1] => X
[2] => 3
[3] => 4
[4] => Array
(
[0] => 1
[1] => Y
[2] => 3
[3] => 4
[4] => Array
(
[0] => 1
[1] => Z
[2] => 3
[3] => 4
[4] => Array
(
[0] => 1
[1] => 2
[2] => 3
[3] => 4
[4] => Array
*RECURSION*
)
)
)
)
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=28734&edit=1