ID: 47836
Updated by: matt...@php.net
-Summary: array operator [] inconsistency when the array has
PHP_MAX_INT index value
Reported By: for-bugs at hnw dot jp
-Status: Verified
+Status: Closed
Bug Type: Scripting Engine problem
Operating System: *
PHP Version: 5.2.9
New Comment:
This bug has been fixed in CVS.
Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
http://snaps.php.net/.
Thank you for the report, and for helping us make PHP better.
Previous Comments:
------------------------------------------------------------------------
[2009-03-30 11:00:31] matt...@php.net
Untested, but it seems like this would give the expected result. In
zend_hash.c:_zend_hash_index_update_or_next_insert(), change the check
from
if ((long)h >= (long)ht->nNextFreeElement) {
ht->nNextFreeElement = h + 1;
}
to
if (h >= ht->nNextFreeElement && h < LONG_MAX) {
ht->nNextFreeElement = h + 1;
}
------------------------------------------------------------------------
[2009-03-30 07:40:48] for-bugs at hnw dot jp
Description:
------------
The behavior of operator [] to the array is sometimes strange or hard
to describe the specification. For instance, the array which has two
index, 2147483647 and -2147483648 on 32bit environment gets strange
results. See below example:
Reproduce code:
---------------
<?php
$array=array();
$array[-2147483648]=2;
$array[2147483647]=1;
$array[]=3;
var_dump($array);
$array=array();
$array[2147483647]=1;
$array[-2147483648]=2;
$array[]=3;
var_dump($array);
Expected result:
----------------
It should be same behavior. I think, the substitution to $array[]
shuold be both failed for this case.
Actual result:
--------------
PHP Warning: Cannot add element to the array as the next element is
already occupied in ./array-maxint-test.php on line 5
array(2) {
[-2147483648]=>
int(2)
[2147483647]=>
int(1)
}
array(3) {
[2147483647]=>
int(1)
[-2147483648]=>
int(2)
[-2147483647]=>
int(3)
}
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=47836&edit=1
