Bug #70853 [NEW]: SplFixedArray throws exception when using ref variable as index

From: Date: Wed, 04 Nov 2015 13:01:07 +0000
Subject: Bug #70853 [NEW]: SplFixedArray throws exception when using ref variable as index
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-197015@lists.php.net to get a copy of this message
From:             php at maisqi dot com
Operating system: Windows 8 x64
PHP version:      7.0.0RC6
Package:          Scripting Engine problem
Bug Type:         Bug
Bug description:SplFixedArray throws exception when using ref variable as index

Description:
------------
PHP7 throws an exception if we try accessing a member by an index stored
in a referenced variable.
In other words, if we have the index in $var and, by one reason or
another, make a reference to it (like $ndx2 =& $ndx) we no longer can
use it to access a SplFixedArray. (We would have to copy $ndx, or $ndx2,
to a temp normal variable and use it instead.)

Test script:
---------------
<?php

$list = new SplFixedArray(10);
$ndx = 1;
$ndx2 =& $ndx;
$list[$ndx] = 123;	// This throws an exception;
$list[$ndx2] = 123;	// as does this, to.
echo 'ok';


Expected result:
----------------
It should just print "ok".

Actual result:
--------------
"Uncaught RuntimeException: Index invalid or out of range"

-- 
Edit bug report at https://bugs.php.net/bug.php?id=70853&edit=1
-- 
Try a snapshot (PHP 5.4):   https://bugs.php.net/fix.php?id=70853&r=trysnapshot54
Try a snapshot (PHP 5.5):   https://bugs.php.net/fix.php?id=70853&r=trysnapshot55
Try a snapshot (trunk):     https://bugs.php.net/fix.php?id=70853&r=trysnapshottrunk
Fixed in SVN:               https://bugs.php.net/fix.php?id=70853&r=fixed
Fixed in release:           https://bugs.php.net/fix.php?id=70853&r=alreadyfixed
Need backtrace:             https://bugs.php.net/fix.php?id=70853&r=needtrace
Need Reproduce Script:      https://bugs.php.net/fix.php?id=70853&r=needscript
Try newer version:          https://bugs.php.net/fix.php?id=70853&r=oldversion
Not developer issue:        https://bugs.php.net/fix.php?id=70853&r=support
Expected behavior:          https://bugs.php.net/fix.php?id=70853&r=notwrong
Not enough info:            https://bugs.php.net/fix.php?id=70853&r=notenoughinfo
Submitted twice:            https://bugs.php.net/fix.php?id=70853&r=submittedtwice
register_globals:           https://bugs.php.net/fix.php?id=70853&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=70853&r=php4
Daylight Savings:           https://bugs.php.net/fix.php?id=70853&r=dst
IIS Stability:              https://bugs.php.net/fix.php?id=70853&r=isapi
Install GNU Sed:            https://bugs.php.net/fix.php?id=70853&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=70853&r=float
No Zend Extensions:         https://bugs.php.net/fix.php?id=70853&r=nozend
MySQL Configuration Error:  https://bugs.php.net/fix.php?id=70853&r=mysqlcfg



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