#42316 [NEW]: RecursiveArrayIterator mix refcount and reference
From: titerm at lfdj dot com
Operating system: Windows
PHP version: 5.2.3
PHP Bug Type: SPL related
Bug description: RecursiveArrayIterator mix refcount and reference
Description:
------------
When multiple entries of an array are initialized with a $base var array,
new entries will increase refcount.
Any modification of this new entries should decrease refcount.
But if modification are done through a recursive Array Iterator, refcount
works like it was reference, and all leaf are modified
Reproduce code:
---------------
// Reference var array
$base['one']['two'] = 'ORG';
// Work array
$arr = array (
'l1' => $base,
'l2' => $base,
'l3' => $base,
);
unset($base); // No need anymore of reference
// Break refcount for level 2, level 1 and level 3 are still refcount
$arr['l2']['one']['two'] =
$arr['l2']['one']['two'];
// Create an iterator on level 1
$iterator = new RecursiveIteratorIterator(new
RecursiveArrayIterator($arr['l1']));
// Alter leaf of level 1
$iterator->offSetSet($iterator->key(), 'ALTER' );
debug_zval_dump($arr);
Expected result:
----------------
array(3) refcount(2){
["l1"]=>
array(1) refcount(1){
["one"]=>
string(5) "ALTER" refcount(1)
}
["l2"]=>
array(1) refcount(1){
["one"]=>
array(1) refcount(1){
["two"]=>
string(3) "ORG" refcount(1)
}
}
["l3"]=>
array(1) refcount(1){
["one"]=>
string(3) "ORG" refcount(1)
}
}
Actual result:
--------------
array(3) refcount(2){
["l1"]=>
array(1) refcount(3){
["one"]=>
string(5) "ALTER" refcount(1)
}
["l2"]=>
array(1) refcount(1){
["one"]=>
array(1) refcount(1){
["two"]=>
string(3) "ORG" refcount(1)
}
}
["l3"]=>
array(1) refcount(3){
["one"]=>
string(5) "ALTER" refcount(1)
}
}
--
Edit bug report at http://bugs.php.net/?id=42316&edit=1
--
Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=42316&r=trysnapshot44
Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=42316&r=trysnapshot52
Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=42316&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=42316&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=42316&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=42316&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=42316&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=42316&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=42316&r=support
Expected behavior: http://bugs.php.net/fix.php?id=42316&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=42316&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=42316&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=42316&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=42316&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=42316&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=42316&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=42316&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=42316&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=42316&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=42316&r=mysqlcfg
Thread (9 messages)
- titerm at lfdj dot com