Ticket #24258: 24258.diff

wp-includes/link-template.php

@@ -302 +302 @@
 
         $post = get_post( $post );
 
+        if ( empty( $post ) )
+                return null;
+
         if ( $wp_rewrite->using_permalinks() && ( $post->post_parent > 0 ) && ( $post->post_parent != $post->ID ) ) {
-                $parent = get_post($post->post_parent);
+                $parent = get_post( $post->post_parent );
+
+        if ( ! empty( $parent ) ) {
                 if ( 'page' == $parent->post_type )
                         $parentlink = _get_page_link( $post->post_parent ); // Ignores page_on_front
                 else
                         $parentlink = get_permalink( $post->post_parent );
 
-                if ( is_numeric($post->post_name) || false !== strpos(get_option('permalink_structure'), '%category%') )
+                if ( is_numeric( $post->post_name ) || false !== strpos( get_option( 'permalink_structure' ), '%category%' ) )
                         $name = 'attachment/' . $post->post_name; // <permalink>/<int>/ is paged so we use the explicit attachment marker
                 else
                         $name = $post->post_name;
 
-                if ( strpos($parentlink, '?') === false )
-                        $link = user_trailingslashit( trailingslashit($parentlink) . '%postname%' );
+                if ( strpos( $parentlink, '?' ) === false )
+                        $link = user_trailingslashit( trailingslashit( $parentlink ) . '%postname%' );
 
                 if ( ! $leavename )
                         $link = str_replace( '%postname%', $name, $link );
+
+                }
+
         }
 
         if ( ! $link )

wp-admin/includes/class-wp-media-list-table.php

@@ -302 +302 @@
                 break;
 
         case 'parent':
-                if ( $post->post_parent > 0 ) {
+                if ( $post->post_parent > 0 && get_post( $post->post_parent ) ) {
                         if ( get_post( $post->post_parent ) ) {
                                 $title =_draft_or_post_title( $post->post_parent );
                         }