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--TEST--
Bug #69419: Returning compatible sub generator produces a warning
--FILE--
<?php
function & genRefInner() {
$var = 1;
yield $var;
}
function & genRefOuter() {
return genRefInner();
}
foreach(genRefOuter() as $i) {
var_dump($i);
}
?>
--EXPECTF--
Notice: Only variable references should be returned by reference in %s on line %d
int(1)
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