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Bug #51024 segmentation fault when concatenating very large strings on Redhat x86
Submitted: 2010-02-12 01:20 UTC Modified: 2010-02-12 16:23 UTC
From: mikerudra at yahoo dot com Assigned:
Status: Not a bug Package: Scripting Engine problem
PHP Version: 5.2SVN-2010-02-12 (snap) OS: Redhat EL
Private report: No CVE-ID: None
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From: mikerudra at yahoo dot com
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 [2010-02-12 01:20 UTC] mikerudra at yahoo dot com 
Description:
------------
Hi guys, 
I checked this bug report
http://bugs.php.net/bug.php?id=50207
and I updated to a release version from today.
The bug is still there as you can see here

http://nats.hotladies.com/nfo.php


Please tell me what is to be done, I need to install NATS and they do not accept 5.3, I need the 5.2 version, please help.
Thanks

Reproduce code:
---------------
$s = str_repeat('A', pow(2,31));
$s .= 'B'; // fails with segfault
printf("strlen: %u last-char: %c", strlen($s), $s[pow(2,31)]);



Expected result:
----------------
Donno, should just work?! Is used by NATS and I got an error working with ioncube encoded source code...

Actual result:
--------------
Notice: Uninitialized string offset: -2147483648 in /var/www/vhosts/nats.hotladies.com/nats/www/nfo.php on line 7
strlen: 1 last-char: �

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 [2010-02-12 16:23 UTC] jani@php.net 
You're also getting a warning:

PHP Warning:  str_repeat(): Second argument has to be greater than or equal to 0

This is not crashing, segfaulting or anything like that.
 
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