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MyASPN >> Mail Archive >> php-dev
php-dev
#50083 [NEW]: Bit shift
by Talk At Apfeldot Dot De other posts by this author
Nov 4 2009 3:27PM messages near this date
#50084 [NEW]: Support a.m. and p.m. (with periods) | #50082 [NEW]: Incorrect test vector CFB/OFB results for Blowfish encryption
From:             talk at apfeldot dot de
Operating system: Win 7
PHP version:      5.3.0
PHP Bug Type:     Unknown/Other Function
Bug description:  Bit shift

Description:
------------
I think there is an integer overflow, which should be prevented.

Reproduce code:
---------------
<?php

var_dump(1 << 33);

?> 

Expected result:
----------------
There should be int(0), because the 1 was shifted out of the integer
representation and the binary code should be 00000...00000.

Actual result:
--------------
int(2)
Binary represantation: 00...0010

-- 
Edit bug report at http://bugs.php.net/?id=50083&edit=1
-- 
Try a snapshot (PHP 5.2):            http://bugs.php.net/fix.php?id=50083&r=trysnapshot52
Try a snapshot (PHP 5.3):            http://bugs.php.net/fix.php?id=50083&r=trysnapshot53
Try a snapshot (PHP 6.0):            http://bugs.php.net/fix.php?id=50083&r=trysnapshot60
Fixed in SVN:                        http://bugs.php.net/fix.php?id=50083&r=fixed
Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=50083&r=needdocs
Fixed in release:                    http://bugs.php.net/fix.php?id=50083&r=alreadyfixed
Need backtrace:                      http://bugs.php.net/fix.php?id=50083&r=needtrace
Need Reproduce Script:               http://bugs.php.net/fix.php?id=50083&r=needscript
Try newer version:                   http://bugs.php.net/fix.php?id=50083&r=oldversion
Not developer issue:                 http://bugs.php.net/fix.php?id=50083&r=support
Expected behavior:                   http://bugs.php.net/fix.php?id=50083&r=notwrong
Not enough info:                     http://bugs.php.net/fix.php?id=50083&r=notenoughinfo
Submitted twice:                     http://bugs.php.net/fix.php?id=50083&r=submittedtwice
register_globals:                    http://bugs.php.net/fix.php?id=50083&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=50083&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=50083&r=dst
IIS Stability:                       http://bugs.php.net/fix.php?id=50083&r=isapi
Install GNU Sed:                     http://bugs.php.net/fix.php?id=50083&r=gnused
Floating point limitations:          http://bugs.php.net/fix.php?id=50083&r=float
No Zend Extensions:                  http://bugs.php.net/fix.php?id=50083&r=nozend
MySQL Configuration Error:           http://bugs.php.net/fix.php?id=50083&r=mysqlcfg

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