Ticket #18461: 18461.patch

wp-includes/capabilities.php

@@ -110 +110 @@
                 $this->role_names =  array();
                 foreach ( (array) $this->roles as $role => $data ) {
                         $this->role_objects[$role] = new WP_Role( $role, $this->roles[$role]['capabilities'] );
-                        $this->role_names[$role] = $this->roles[$role]['name'];
+                        $this->role_names[$role] = isset( $this->roles[$role]['name'] ) ? $this->roles[$role]['name'] : '';
                 }
         }