From: robin_fernandes at uk dot ibm dot com
Operating system: Windows
PHP version: 5.2CVS-2008-02-20 (snap)
PHP Bug Type: Arrays related
Bug description: extract($a, EXTR_REFS) can fail to split copy-on-write
references
Description:
------------
extract($a, EXTR_REFS) does not always respect copy-on-write reference
logic.
In the testcase below, $nonRef is initially a copy-on-write reference to
an element of $a. After the call to extract, it has become a real reference
to an element of $a.
This is reproducible on 5.2, 5.3 and 6.0 snaps.
Reproduce code:
---------------
<?php
$a = array('foo' => 'original.foo');
$nonref = $a['foo'];
$ref = &$a;
extract($a, EXTR_REFS);
$a['foo'] = 'changed.foo';
var_dump($nonref); //expecting original.foo
?>
Expected result:
----------------
string(12) "original.foo"
Actual result:
--------------
string(11) "changed.foo"
--
Edit bug report at http://bugs.php.net/?id=44182&edit=1
--
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=44182&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=44182&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=44182&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=44182&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=44182&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=44182&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=44182&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=44182&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=44182&r=support
Expected behavior: http://bugs.php.net/fix.php?id=44182&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=44182&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=44182&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=44182&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=44182&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=44182&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=44182&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=44182&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=44182&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=44182&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=44182&r=mysqlcfg
