Bug #51715 [NEW]: Lambda's definition breaks references when using use() clause.

From: Date: Sat, 01 May 2010 11:27:26 +0000
Subject: Bug #51715 [NEW]: Lambda's definition breaks references when using use() clause.
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-150077@lists.php.net to get a copy of this message 
From:             
Operating system: Any
PHP version:      5.3.2
Package:          Scripting Engine problem
Bug Type:         Bug
Bug description:Lambda's definition breaks references when using use() clause.

Description:
------------
See test script.

Test script:
---------------
[...]# cat test.php
<?php

$x =null;

// reference $x
$y =&$x;

// focus on this (lambda def.)
function() use( $y){};

// update value of $x via reference.
$y =10;

// oops, bug, outputs NULL since lambda def. breaks
//  the reference.
var_dump( $x);

?>

[...]# php -v
PHP 5.3.2 (cli) (built: Mar  4 2010 22:12:20)
Copyright (c) 1997-2010 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2010 Zend Technologies

[...]# php test.php
NULL

Expected result:
----------------
int(10)

Actual result:
--------------
NULL

-- 
Edit bug report at http://bugs.php.net/bug.php?id=51715&edit=1
-- 
Try a snapshot (PHP 5.2):            http://bugs.php.net/fix.php?id=51715&r=trysnapshot52
Try a snapshot (PHP 5.3):            http://bugs.php.net/fix.php?id=51715&r=trysnapshot53
Try a snapshot (PHP 6.0):            http://bugs.php.net/fix.php?id=51715&r=trysnapshot60
Fixed in SVN:                        http://bugs.php.net/fix.php?id=51715&r=fixed
Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=51715&r=needdocs
Fixed in release:                    http://bugs.php.net/fix.php?id=51715&r=alreadyfixed
Need backtrace:                      http://bugs.php.net/fix.php?id=51715&r=needtrace
Need Reproduce Script:               http://bugs.php.net/fix.php?id=51715&r=needscript
Try newer version:                   http://bugs.php.net/fix.php?id=51715&r=oldversion
Not developer issue:                 http://bugs.php.net/fix.php?id=51715&r=support
Expected behavior:                   http://bugs.php.net/fix.php?id=51715&r=notwrong
Not enough info:                     http://bugs.php.net/fix.php?id=51715&r=notenoughinfo
Submitted twice:                     http://bugs.php.net/fix.php?id=51715&r=submittedtwice
register_globals:                    http://bugs.php.net/fix.php?id=51715&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=51715&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=51715&r=dst
IIS Stability:                       http://bugs.php.net/fix.php?id=51715&r=isapi
Install GNU Sed:                     http://bugs.php.net/fix.php?id=51715&r=gnused
Floating point limitations:          http://bugs.php.net/fix.php?id=51715&r=float
No Zend Extensions:                  http://bugs.php.net/fix.php?id=51715&r=nozend
MySQL Configuration Error:           http://bugs.php.net/fix.php?id=51715&r=mysqlcfg

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