csu3_am335x/EVSE/GPL/php-8.1.12/ext/standard/tests/array/bug29493.phpt

--TEST--
Bug #29493 (extract(EXTR_REFS) fails if array has multiple referrals)
--FILE--
<?php
function t1()
{
    $a = array('foo' => 'aaa');
    // refcount($a) = 1
    // refcount($a['foo']) = 1
    $b = $a;
    // refcount($a) = 2
    // refcount($a['foo']) = 1
    $b['foo'] = 'bbb';
    // refcount($a) = 1
    // refcount($a['foo']) = 1

    var_dump($a, $b);

    extract($a, EXTR_REFS);

    $foo = 'noo';

    var_dump($a, $b);
}

function t2()
{
    $a = array('foo' => 'aaa');
    // refcount($a) = 1
    // refcount($a['foo']) = 1
    $b = &$a;
    // refcount($a) = 2
    // is_ref($a) = true
    // refcount($a['foo']) = 1
    $b['foo'] = 'bbb';
    // refcount($a) = 2
    // refcount($a['foo']) = 1

    var_dump($a, $b);

    extract($a, EXTR_REFS);

    $foo = 'noo';

    var_dump($a, $b);
}

function t3()
{
    $a = array('foo' => 'aaa');
    // refcount($a) = 1
    // refcount($a['foo']) = 1
    $b = &$a;
    // refcount($a) = 2
    // is_ref($a) = true
    // refcount($a['foo']) = 1
    unset($b);
    // refcount($a) = 1
    // is_ref($a) = true
    // refcount($a['foo']) = 1

    var_dump($a);

    extract($a, EXTR_REFS);

    $foo = 'noo';

    var_dump($a);
}

t1();
t2();
t3();
?>
--EXPECT--
array(1) {
  ["foo"]=>
  string(3) "aaa"
}
array(1) {
  ["foo"]=>
  string(3) "bbb"
}
array(1) {
  ["foo"]=>
  &string(3) "noo"
}
array(1) {
  ["foo"]=>
  string(3) "bbb"
}
array(1) {
  ["foo"]=>
  string(3) "bbb"
}
array(1) {
  ["foo"]=>
  string(3) "bbb"
}
array(1) {
  ["foo"]=>
  &string(3) "noo"
}
array(1) {
  ["foo"]=>
  &string(3) "noo"
}
array(1) {
  ["foo"]=>
  string(3) "aaa"
}
array(1) {
  ["foo"]=>
  &string(3) "noo"
}