ID: 14134
Updated by: derick
Reported By: [EMAIL PROTECTED]
Status: Analyzed
Bug Type: Scripting Engine problem
Operating System: Linux
PHP Version: 4.0.6
Assigned To: derick
New Comment:
Changing this into a suspended scripting engine problem, as the bug lies in Zend. It
is possible to change te parsing, but this will need a lot of adjustments in it.
That's why I'm suspending it too.
Derick
Previous Comments:
------------------------------------------------------------------------
[2001-11-26 14:42:58] [EMAIL PROTECTED]
s/unsigned/signed in my text... I was sleeping I think :)
Derick
------------------------------------------------------------------------
[2001-11-26 14:35:08] [EMAIL PROTECTED]
Derick,
Can you tell me where this code is so I can have a look? I'm a little confused about
your comment about conversion to unsigned integers. First, I believe strtol converts
to a signed integer (and, as used in intval, it does work correctly). But 2147483648
actually is a valid unsigned long. If the conversion is failing, it must be trying to
convert to a signed integer.
As for the workaround, creating constants INT_MIN and INT_MAX is exactly what I did,
although you still have to be careful when creating INT_MIN. It must be something
like:
define( "INT_MIN", -2147483647 - 1 );
define( "INT_MAX", 2147483647 );
------------------------------------------------------------------------
[2001-11-26 02:37:19] [EMAIL PROTECTED]
Ok, as I have no time to look into a fix (if it's even do-able), I'll explain here why
it happens:
The parser embedded in PHP, does not take "-2147483648" as a string to convert (with
strtol) to a unsigned integer, but it instead does this:
1. it tries to convert "2147483648" to a unsigned integer (which fails)
2. it tries to substract this from 0, ie. 0 - 2147483648.
Because the conversion to a unsigned long fails in the first step, it gets converted
to a floating point number, which is substracted from 0.
A way to solve this can be to add constants for these outher limits, ie. INT_MIN (for
-2147483648) and INT_MAX (for 2147483647).
Derick
------------------------------------------------------------------------
[2001-11-20 03:31:18] [EMAIL PROTECTED]
Found the problem. I'll try to make a fix this evening.
Derick
------------------------------------------------------------------------
[2001-11-20 03:02:55] [EMAIL PROTECTED]
Checking this out
------------------------------------------------------------------------
The remainder of the comments for this report are too long. To view
the rest of the comments, please view the bug report online at
http://bugs.php.net/?id=14134
Edit this bug report at http://bugs.php.net/?id=14134&edit=1
--
PHP Development Mailing List <http://www.php.net/>
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
To contact the list administrators, e-mail: [EMAIL PROTECTED]
