#27208 [NEW]: ~ operator produces incorrect result under Linux
| From: | tonyman_hacker at yahoo dot com | Date: | Tue, 10 Feb 2004 15:18:21 +0000 |
| Subject: | #27208 [NEW]: ~ operator produces incorrect result under Linux | ||
| Groups: | php.bugs | ||
| Request: | Send a blank email to php-bugs+get-54693@lists.php.net to get a copy of this message | ||
From: tonyman_hacker at yahoo dot com
Operating system: Linux
PHP version: 4.3.4
PHP Bug Type: Scripting Engine problem
Bug description: ~ operator produces incorrect result under Linux
Description:
------------
I've founded that under Linux the ~ bit operator doesn't produce correct
result;
Reproduce code:
---------------
$myvar = 0x1;
$myvar = ~$myvar;
// the result of this operation on windows system is correct
// 0xFFFFFFFE
// on Linux we have 0xFFFFFFFF
echo dechex($myvar);
Expected result:
----------------
// the result of this operation on windows system is correct
// 0xFFFFFFFE
// on Linux we have 0xFFFFFFFF
Actual result:
--------------
// the result of this operation on windows system is correct
// 0xFFFFFFFE
// on Linux we have 0xFFFFFFFF
instead of this you could use XOR operator ...
i.e. ~$myvar = $myvar ^ 0xFFFFFFFF
--
Edit bug report at http://bugs.php.net/?id=27208&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=27208&r=trysnapshot4
Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=27208&r=trysnapshot5
Fixed in CVS: http://bugs.php.net/fix.php?id=27208&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=27208&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=27208&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=27208&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=27208&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=27208&r=support
Expected behavior: http://bugs.php.net/fix.php?id=27208&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=27208&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=27208&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=27208&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=27208&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=27208&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=27208&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=27208&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=27208&r=float