thanks, I've known about this for a while but it's good to have an issue file for it

To resolve this bug :

cvs_export.php (26)
$t_bug_count = null;
$t_page_count = null;
$p_per_page = -1;
$f_page_number = 1;

$rows = filter_get_bug_rows( $f_page_number, $p_per_page, $t_page_count, $t_bug_count );

core/filter_api.php (20)
function filter_get_bug_rows( &$p_page_number, &$p_per_page, &$p_page_count, &$p_bug_count ) {

view_all_bug_page.php (33)
$t_bug_count = null;
$t_page_count = null;
$p_per_page = null;

$rows = filter_get_bug_rows( $f_page_number, $p_per_page, $t_page_count, $t_bug_count );

I hope this helps

Fixed in CVS, thanks for the recipe :)