Ticket #11863: post.patch

post.php

@@ -2430 +2430 @@
         } elseif ( in_array( $post_type, $hierarchical_post_types ) ) {
                 // Page slugs must be unique within their own trees. Pages are in a separate
                 // namespace than posts so page slugs are allowed to overlap post slugs.
-                $check_sql = "SELECT post_name FROM $wpdb->posts WHERE post_name = %s AND post_type IN ( '" . implode( "', '", esc_sql( $hierarchical_post_types ) ) . "' ) AND ID != %d AND post_parent = %d LIMIT 1";
+                $check_sql = "SELECT post_name FROM $wpdb->posts WHERE post_name = %s AND post_type IN ( '" . implode( "', '", esc_sql( $hierarchical_post_types ) ) . "' ) AND ID != %d AND post_parent = %d AND post_status <> 'trash' LIMIT 1";
                 $post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $slug, $post_ID, $post_parent ) );
 
                 if ( $post_name_check || in_array( $slug, $feeds ) || preg_match( '@^(page)?\d+$@', $slug ) ) {
@@ -2444 +2444 @@
                 }
         } else {
                 // Post slugs must be unique across all posts.
-                $check_sql = "SELECT post_name FROM $wpdb->posts WHERE post_name = %s AND post_type = %s AND ID != %d LIMIT 1";
+                $check_sql = "SELECT post_name FROM $wpdb->posts WHERE post_name = %s AND post_type = %s AND ID != %d AND post_status <> 'trash' LIMIT 1";
                 $post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $slug, $post_type, $post_ID ) );
 
                 if ( $post_name_check || in_array( $slug, $feeds ) ) {