--TEST-- Bug #49866 (Making reference on string offsets crashes PHP) --FILE-- <?php $a = "string"; $b = &$a[1]; $b = "f"; echo $a; --EXPECTF-- Fatal error: Uncaught Error: Cannot create references to/from string offsets in %sbug49866.php:3 Stack trace: #0 {main} thrown in %sbug49866.php on line 3