Bug #13089: Simple Char Swapping in String crashes Webserver
| From: | j dot kisters at rosomm-partner dot de | Date: | Sat, 01 Sep 2001 13:50:53 +0000 |
| Subject: | Bug #13089: Simple Char Swapping in String crashes Webserver | ||
| Groups: | php.dev | ||
| Request: | Send a blank email to php-dev+get-64871@lists.php.net to get a copy of this message | ||
From: j.kisters@rosomm-partner.de
Operating system: Suse Linux 7.1
PHP version: 4.0.4pl1
PHP Bug Type: Reproducible crash
Bug description: Simple Char Swapping in String crashes Webserver
Hey there i just managed something that i never accomplished beforei
kill a httpd process from PHP,
i run the following code
<?
$slen=strlen($enc);
for ($i=0;$i<$slen;$i=$i+2) {
$swap=$enc[$i];
$enc[$i]=$enc[$i+1];
$enc[$i+1]=$swap;
}
?>
$enc is a string and has an even length
This silly lines of code make the apache child process crash, if i
change it to
<?
$slen=strlen($enc);
for ($i=0;$i<$slen;$i=$i+2) {
$swap=$enc[$i];
$swap2=$enc[$i+1];
$enc[$i]=$swap2;
$enc[$i+1]=$swap;
}
?>
it works well.
what the hell is happening here?
i run php 4.04pl1 as apache module under linux.
--
Edit bug report at: http://bugs.php.net/?id=13089&edit=1