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Edit report at http://bugs.php.net/bug.php?id=53102&edit=1
ID: 53102
Comment by: [email protected]
Reported by: sharpg8867 at gmail dot com
Summary: the number 928 incorrectly packs (loses a bit)
Status: Open
Type: Bug
Package: PHP-GTK related
PHP Version: 5.2.14
Block user comment: N
New Comment:
Also, you should provide a test script that people can *actually* run,
not leaving us to infer the steps you took to produce the issue.
Previous Comments:
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[2010-10-19 15:26:29] [email protected]
Why is this PHP-GTK related?
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[2010-10-19 14:21:09] sharpg8867 at gmail dot com
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.
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Edit this bug report at http://bugs.php.net/bug.php?id=53102&edit=1