[PHP-BUG] Bug #53102 [NEW]: the number 928 incorrectly packs (loses a bit)
[email protected] ("sharpg8867 at gmail dot com") Tue, 19 Oct 2010 14:21:16 +0200 (CEST)
| Newsgroups | php.gtk.dev |
|---|---|
| Message-ID | <[email protected]> |
From:
Operating system:
PHP version: 5.2.14
Package: PHP-GTK related
Bug Type: Bug
Bug description:the number 928 incorrectly packs (loses a bit)
Description:
------------
a) packing the value 928 (0x3A0) and 927 (0x39F) as unsigned long ("N")
always converts to 927 (0x39F)
b) masking the lower 8 bits of 0x3A0 always reads as 0x3F or 159
Note: phpinfo reports PHP Version 5.2.13
Test script:
---------------
$value = 928;
pack("N",$value) is 0x39f (927)
$value = 927;
pack("N",$value) is 0x39f (927)
$value = 928;
$v0 = $value & 0xff;
$v0 prints as 927
Expected result:
----------------
928 packs as 928.
Actual result:
--------------
928 packs as 927
Not good for computer to lose bits.
--
Edit bug report at http://bugs.php.net/bug.php?id=53102&edit=1
--
Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=53102&r=trysnapshot52
Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=53102&r=trysnapshot53
Try a snapshot (trunk): http://bugs.php.net/fix.php?id=53102&r=trysnapshottrunk
Fixed in SVN: http://bugs.php.net/fix.php?id=53102&r=fixed
Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=53102&r=needdocs
Fixed in release: http://bugs.php.net/fix.php?id=53102&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=53102&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=53102&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=53102&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=53102&r=support
Expected behavior: http://bugs.php.net/fix.php?id=53102&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=53102&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=53102&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=53102&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=53102&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=53102&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=53102&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=53102&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=53102&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=53102&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=53102&r=mysqlcfg