Fix for Fix for my module is showing bug .. not sure why ..

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By fkaufusi

Drupal version 6:

function user_access($string, $account = NULL, $reset = FALSE) {
  global $user;
  static $perm = array();
  if ($reset) {
    $perm = array();
  }

if(is_null($account)){
      $account = $user;      
  }

// User #1 has all privileges:
  if ($account->uid == 1) {
    return TRUE;
  }
  // To reduce the number of SQL queries, we cache the user's permissions
  // in a static variable.
  if (!isset($perm[$account->uid])) {
    $result = db_query("SELECT p.perm FROM {role} r INNER JOIN {permission} p ON p.rid = r.rid WHERE r.rid IN (". db_placeholders($account->roles) .")", array_keys($account->roles));
    $perms = array();
    while ($row = db_fetch_object($result)) {
      $perms += array_flip(explode(', ', $row->perm));
    }
    $perm[$account->uid] = $perms;
  }
  return isset($perm[$account->uid][$string]); 
}

Have a look at the function above which is use to check the user access permission.

Look at how the drupal validate the $account variable, $account variable is suppose to be an object and here's how drupal validate it.

if(is_null($account)){
      $account = $user;      
}

They only check to see if the $account variable is null, then if not null then they think is an object. Okay how about if the $account type is not an object.

Here's a small fix and it would help to implement in the next version of drupal.

if(is_null($account) || !is_object($account)){
      $account = $user;      
}

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Fix for Fix for my module is showing bug .. not sure why ..