Ticket #18536: 18536-ancestors.diff

wp-includes/post.php

@@ -430 +430 @@
 function get_post_ancestors($post) {
         $post = get_post($post);
 
-        if ( !empty($post->ancestors) )
+        if ( ! isset( $post->ancestors ) )
+                _get_post_ancestors( $post );
+
+        if ( ! empty( $post->ancestors ) )
                 return $post->ancestors;
 
         return array();
@@ -4645 +4648 @@
         if ( empty($_post->post_parent) || $_post->ID == $_post->post_parent )
                 return;
 
-        $id = $_post->ancestors[] = $_post->post_parent;
+        $id = $_post->ancestors[] = (int) $_post->post_parent;
         while ( $ancestor = $wpdb->get_var( $wpdb->prepare("SELECT `post_parent` FROM $wpdb->posts WHERE ID = %d LIMIT 1", $id) ) ) {
                 // Loop detection: If the ancestor has been seen before, break.
                 if ( ( $ancestor == $_post->ID ) || in_array($ancestor,  $_post->ancestors) )
                         break;
-                $id = $_post->ancestors[] = $ancestor;
+                $id = $_post->ancestors[] = (int) $ancestor;
         }
 }