=== modified file 'includes/menu.inc'
--- includes/menu.inc	2009-12-14 20:23:01 +0000
+++ includes/menu.inc	2009-12-16 12:00:05 +0000
@@ -430,7 +430,7 @@ function menu_get_item($path = NULL, $ro
 
 /**
  * Execute the page callback associated with the current path.
- * 
+ *
  * @param $path
  *   The drupal path whose handler is to be be executed. If set to NULL, then
  *   the current path is used.
@@ -3315,38 +3315,5 @@ function _menu_site_is_offline($check_on
 }
 
 /**
- * Validates the path of a menu link being created or edited.
- *
- * @return
- *   TRUE if it is a valid path AND the current user has access permission,
- *   FALSE otherwise.
- */
-function menu_valid_path($form_item) {
-  global $menu_admin;
-  $item = array();
-  $path = $form_item['link_path'];
-  // We indicate that a menu administrator is running the menu access check.
-  $menu_admin = TRUE;
-  if ($path == '<front>' || url_is_external($path)) {
-    $item = array('access' => TRUE);
-  }
-  elseif (preg_match('/\/\%/', $path)) {
-    // Path is dynamic (ie 'user/%'), so check directly against menu_router table.
-    if ($item = db_query("SELECT * FROM {menu_router} where path = :path", array(':path' => $path))->fetchAssoc()) {
-      $item['link_path']  = $form_item['link_path'];
-      $item['link_title'] = $form_item['link_title'];
-      $item['external']   = FALSE;
-      $item['options'] = '';
-      _menu_link_translate($item);
-    }
-  }
-  else {
-    $item = menu_get_item($path);
-  }
-  $menu_admin = FALSE;
-  return $item && $item['access'];
-}
-
-/**
  * @} End of "defgroup menu".
  */

=== modified file 'includes/path.inc'
--- includes/path.inc	2009-12-07 06:07:19 +0000
+++ includes/path.inc	2009-12-16 12:03:26 +0000
@@ -547,3 +547,39 @@ function path_get_admin_paths() {
   }
   return $patterns;
 }
+
+/**
+ * Checks a path exists and the current user has access to it.
+ *
+ * @param $path
+ *   The path to check.
+ * @param $dynamic_allowed
+ *   Whether paths with menu wildcards (like user/%) should be allowed.
+ *
+ * @return
+ *   TRUE if it is a valid path AND the current user has access permission,
+ *   FALSE otherwise.
+ */
+function drupal_valid_path($path, $dynamic_allowed = FALSE) {
+  global $menu_admin;
+  // We indicate that a menu administrator is running the menu access check.
+  $menu_admin = TRUE;
+  if ($path == '<front>' || url_is_external($path)) {
+    $item = array('access' => TRUE);
+  }
+  elseif ($dynamic_allowed && preg_match('/\/\%/', $path)) {
+    // Path is dynamic (ie 'user/%'), so check directly against menu_router table.
+    if ($item = db_query("SELECT * FROM {menu_router} where path = :path", array(':path' => $path))->fetchAssoc()) {
+      $item['link_path']  = $form_item['link_path'];
+      $item['link_title'] = $form_item['link_title'];
+      $item['external']   = FALSE;
+      $item['options'] = '';
+      _menu_link_translate($item);
+    }
+  }
+  else {
+    $item = menu_get_item($path);
+  }
+  $menu_admin = FALSE;
+  return $item && $item['access'];
+}

=== modified file 'modules/menu/menu.admin.inc'
--- modules/menu/menu.admin.inc	2009-11-04 04:43:58 +0000
+++ modules/menu/menu.admin.inc	2009-12-16 12:04:09 +0000
@@ -363,7 +363,7 @@ function menu_edit_item_validate($form, 
       $item['link_path'] = $parsed_link['path'];
     }
   }
-  if (!trim($item['link_path']) || !menu_valid_path($item)) {
+  if (!trim($item['link_path']) || !drupal_valid_path($item['link_path'], TRUE)) {
     form_set_error('link_path', t("The path '@link_path' is either invalid or you do not have access to it.", array('@link_path' => $item['link_path'])));
   }
 }

=== modified file 'modules/path/path.admin.inc'
--- modules/path/path.admin.inc	2009-12-02 19:26:21 +0000
+++ modules/path/path.admin.inc	2009-12-16 12:04:52 +0000
@@ -163,8 +163,7 @@ function path_admin_form_validate($form,
   if ($has_alias) {
     form_set_error('alias', t('The alias %alias is already in use in this language.', array('%alias' => $alias)));
   }
-  $item = menu_get_item($source);
-  if (!$item || !$item['access']) {
+  if (!drupal_valid_path($source)) {
     form_set_error('source', t("The path '@link_path' is either invalid or you do not have access to it.", array('@link_path' => $source)));
   }
 }

=== modified file 'modules/system/system.admin.inc'
--- modules/system/system.admin.inc	2009-12-15 08:45:32 +0000
+++ modules/system/system.admin.inc	2009-12-16 12:03:56 +0000
@@ -1483,8 +1483,7 @@ function system_site_information_setting
   // Get the normal path of the front page.
   form_set_value($form['site_frontpage'], drupal_get_normal_path($form_state['values']['site_frontpage']), $form_state);
   // Validate front page path.
-  $item = array('link_path' => $form_state['values']['site_frontpage']);
-  if (!menu_valid_path($item)) {
+  if (!drupal_valid_path($form_state['values']['site_frontpage'])) {
     form_set_error('site_frontpage', t("The path '@path' is either invalid or you do not have access to it.", array('@path' => $item['link_path'])));
   }
 }