Description:
------------
This bug occures in php-4.3.9 final release
my configure command:
'./configure' '--with-mysql' '--with-apxs2=/usr/bin/apxs2' '--enable-bcmath' '--enable-calendar' '--with-zlib' '--enable-sockets'

The only change in php.ini:

session.cookie_name = PHPSESSID
changed to
session.cookie_name = GWARS_COOKIE

The HTTP-Header Set-Cookie is only send when no session-cookie was send in the HTTP_REQUEST to the server (Apache 2.0.51).
So when I delete my cookies and I call the script for the first time I got in my HTTP headers the following line:

Set-Cookie: GWARS_COOKIE=<SESSION_ID>; expires=<DATE>; path=/

when I call the same page again the Set-Cookie line in the HTTP headers is missing.

The Set-Cookie line in the HTTP headers will occure after I delete my cookies. So the problem is, that my session will be invalid after 30 minutes even if session_start is called again, as I don't get a new Set-Cookie line with the new expiry-date

My browser accept cookies and the script worked fine with php version 4.3.8 same configure command and same php settings.

Hopefully you understand my problem. If not please contact me.

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

My work around is

<?php
session_start();
if (isset($_COOKIE['GWARS_COOKIE']))
{
    setcookie('GWARS_COOKIE' , $_COOKIE['GWARS_COOKIE'] , time() + 1800);
}//endif
?>

Expected result:
----------------
The code should return an empty page. That works quite fine.
But the HTTP Headers are only correct the first time I call the script. When I call the script more often and my session-cookie is valid the response HTTP headers are incorrect (Set-Cookie ... is missing)

Actual result:
--------------
First time call of script:

HTTP-Return

    HTTP/1.1 200 OK\r\n
    Date: Sat, 25 Sep 2004 20:16:19 GMT\r\n
    Server: Apache/2.0.51 (Debian GNU/Linux) mod_perl/1.99_12 Perl/v5.8.3 PHP/4.3.9\r\n
    X-Powered-By: PHP/4.3.9\r\n
    Set-Cookie: GWARS_COOKIE=f94b066ef5acdeefb4bcce83292c661b; expires=Sat, 25-Sep-2004 20:46:19 GMT; path=/\r\n
    Expires: Thu, 19 Nov 1981 08:52:00 GMT\r\n
    Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0\r\n
    Pragma: no-cache\r\n
    Content-Length: 4\r\n
    Keep-Alive: timeout=2, max=100\r\n
    Connection: Keep-Alive\r\n
    Content-Type: text/html; charset=ISO-8859-1\r\n
    \r\n

second call of script (cache emptied)

    HTTP/1.1 200 OK\r\n
    Date: Sat, 25 Sep 2004 20:16:19 GMT\r\n
    Server: Apache/2.0.51 (Debian GNU/Linux) mod_perl/1.99_12 Perl/v5.8.3 PHP/4.3.9\r\n
    X-Powered-By: PHP/4.3.9\r\n
    Expires: Thu, 19 Nov 1981 08:52:00 GMT\r\n
    Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0\r\n
    Pragma: no-cache\r\n
    Content-Length: 4\r\n
    Keep-Alive: timeout=2, max=100\r\n
    Connection: Keep-Alive\r\n
    Content-Type: text/html; charset=ISO-8859-1\r\n
    \r\n