1--TEST-- 2Bug #69419: Returning compatible sub generator produces a warning 3--FILE-- 4<?php 5 6function & genRefInner() { 7 $var = 1; 8 yield $var; 9} 10 11function & genRefOuter() { 12 return genRefInner(); 13} 14 15foreach(genRefOuter() as $i) { 16 var_dump($i); 17} 18 19?> 20--EXPECTF-- 21Notice: Only variable references should be returned by reference in %s on line %d 22int(1) 23