Undefined index q

Question

I have 2 websites on the same server. They both use the same modules.

In one of them, I get the following notices:

Notice: Undefined index: q in current_path() (line 355 of /var/www/drupal/includes/path.inc).
Notice: Undefined index: q in l() (line 2424 of /var/www/drupal/includes/common.inc).
Notice: Undefined index: q in arg() (line 2792 of /var/www/drupal/includes/bootstrap.inc).

Does anyone have any idea about what can cause these notices?
The website is working perfectly, and I know I can put some error_reporting in the settings.php, but it won't solve the problem.

Answer 1

Line 355 of /includes/path.inc contains this code:

return $_GET['q'];

So, we can suppose, that $_GET['q'] is undefined. According to documentation, this variable is initialized in drupal_path_initialize function during bootstrap. It's code:

function drupal_path_initialize() {
  if (empty($_GET['q'])) {
    $_GET['q'] = variable_get('site_frontpage', 'node');
  }
  $_GET['q'] = drupal_get_normal_path($_GET['q']);
}

Maybe, the function drupal_get_normal_path gives undefined value for 'site_frontpage' var?

Answer 2

Never mind, That was a stupid mistake of mine in my custom theme.