Re: [PHP-DEV] Bug #3226 Updated: This code makes PHP segfault A From: Noll Janos (johnzero <email protected>)
Date: 01/19/00

Hy!

>>Description: This code makes PHP segfault Apache
>>I've also heard that this affects PHP4 b2 and b3.
> You forgot to post the code :)

 Not really:

>>Full Bug description available at: http://bugs.php.net/?id=3226

 But here goes:

Okay. So it seems as there's a bug in the functions
base64_decode(); when calling it many times.

Check the code below, and reload it 10-20 times!
It should make a few seg.fault messages in the apache error.log

-----------------------------------------
<?php

echo "<html><body>Start<br>";
flush();

for ($c=0;$c<4000;$c++) {
        $a = "a+ly6XM";
        $b = base64_decode($a);
}
echo "End<br>";

?>
-----------------------------------------

 I was told this crashes PHP4 too, but din't test that, only in PHP3, however
the base64_decode function source code seems to be mostly the same.

| Noll Janos <johnzero <email protected>> | http://www.adam.hu/~johnzero |
| "Expect the unexpected!" | finger johnzero <email protected> for PGP |
| ICQ# 4547866 | Linux rulez! | 

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