Bug #63510 [Opn]: Integer overflow with chr

From: Date: Wed, 14 Nov 2012 15:28:28 +0000
Subject: Bug #63510 [Opn]: Integer overflow with chr
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-174674@lists.php.net to get a copy of this message 
Edit report at https://bugs.php.net/bug.php?id=63510&edit=1

 ID:                 63510
 Updated by:         laruence@php.net
 Reported by:        idokan at gmail dot com
 Summary:            Integer overflow with chr
 Status:             Open
 Type:               Bug
 Package:            Strings related
 PHP Version:        5.4.8
 Block user comment: N
 Private report:     N

 New Comment:

I think this check could be done in user script self.

the document said:
chr convert *ascii* code .. so...


Previous Comments:
------------------------------------------------------------------------
[2012-11-14 09:36:12] idokan at gmail dot com

Description:
------------
The chr function translate a single Byte length integer into it's ASCII value.
When providing a number bigger then 255, it returns the first byte instead of reporting an error
about being out of range.

Test script:
---------------
echo chr(1000) . ' ' . ord(chr(1000)) . "\n";

Expected result:
----------------
chr must check the numeric boundaries and report on on an error when they are out of the range.

Actual result:
--------------
returns the first byte out of the result, making it appear like an integer overflow that the carry
flag exception was captured.


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Edit this bug report at https://bugs.php.net/bug.php?id=63510&edit=1

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