--TEST--
"Reference Unpacking - From Functions" list()
--FILE--
<?php
$arr = [1, 2];
function no_ref($a) {
    return $a;
}

function no_ref_by_ref(&$a) {
    return $a;
}

function &ref_return(&$a) {
    return $a;
}

function &ref_return_global() {
    global $arr;
    return $arr;
}

$a = [1, 2];
[&$var] = no_ref($a);
var_dump($var);
var_dump($a);

$a = [1, 2];
[&$var] = no_ref_by_ref($a);
var_dump($var);
var_dump($a);

$a = [1, 2];
[&$var] = ref_return($a);
var_dump($var);
var_dump($a);

[,&$var] = ref_return_global();
var_dump($var);
var_dump($arr);
?>
--EXPECTF--
Notice: Attempting to set reference to non referenceable value in %s on line %d
int(1)
array(2) {
  [0]=>
  int(1)
  [1]=>
  int(2)
}

Notice: Attempting to set reference to non referenceable value in %s on line %d
int(1)
array(2) {
  [0]=>
  int(1)
  [1]=>
  int(2)
}
int(1)
array(2) {
  [0]=>
  &int(1)
  [1]=>
  int(2)
}
int(2)
array(2) {
  [0]=>
  int(1)
  [1]=>
  &int(2)
}