Description:
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Running Gentoo Linux with apache-2.0.58-r2 and php-5.2.3-r3. After the upgrade to php 5.2.3-r3 from 5.2.2-r1 some of my pages that uses sessions no longer works. If I use safe_mode = On (only change made to php.ini) and do a session_start() I get a message that SAFE MODE Restriction in effect. This used to work on PHP 5.2.2. If I downgrade to php 5.2.2 it works again, so it is the php upgrade that triggers this error. Permissions on /tmp is as they should be on a tmp dir. I have not been able to find anything in the change log that mentions this change of behavior.   

drwxrwxrwt  42 root  root    12288 2007-07-30 23:56 tmp


Reproduce code:
---------------
<?
session_start();

$_SESSION['test'] = "hejsa";

for($i = 0; $i < 10; $i++) {
        echo $i . '<br/>';
}
?>


Expected result:
----------------
0
1
2
3
4
5
6
7
8
9

Actual result:
--------------
Warning: session_start() [function.session-start]: SAFE MODE Restriction in effect. The script whose uid is 81 is not allowed to access /tmp owned by uid 0 in /var/www/localhost/htdocs/test.php on line 2

Fatal error: session_start() [<a href='function.session-start'>function.session-start</a>]: Failed to initialize storage module: files (path: ) in /var/www/localhost/htdocs/test.php on line 2