From: php_bug at cklowe dot com
Operating system: Win32
PHP version: 4CVS-2004-11-05 (stable)
PHP Bug Type: Math related
Bug description: 0x80000000 treated as 0x7fffffff
Description:
------------
Large integers are being saturated to the maximum signed value
(0x7fffffff) as opposed to being treated as the unsigned values.
Panic! I had code that set the high bit in a Permissions variable when
some condition was met.
After changing PHP versions because of bug 25570, I found user reports of
"Why have I got all these additional permissions?" and "I've now got Admin
rights, OOoooh. What happens if I run this SQL query in the page I now
have access to?".
Reproduce code:
---------------
define ("BIG_NUM", 0x80000000);
$big_var = 0x80000000;
echo sprintf("%08x, %08x", BIG_NUM, $big_var);
Expected result:
----------------
80000000,80000000
Actual result:
--------------
7fffffff, 7fffffff
--
Edit bug report at http://bugs.php.net/?id=30695&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=30695&r=trysnapshot4
Try a CVS snapshot (php5.0): http://bugs.php.net/fix.php?id=30695&r=trysnapshot50
Try a CVS snapshot (php5.1): http://bugs.php.net/fix.php?id=30695&r=trysnapshot51
Fixed in CVS: http://bugs.php.net/fix.php?id=30695&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=30695&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=30695&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=30695&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=30695&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=30695&r=support
Expected behavior: http://bugs.php.net/fix.php?id=30695&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=30695&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=30695&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=30695&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=30695&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=30695&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=30695&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=30695&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=30695&r=float
MySQL Configuration Error: http://bugs.php.net/fix.php?id=30695&r=mysqlcfg
