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Fix GH-16808: Segmentation fault in RecursiveIteratorIterator->current() with a xml element input #16825

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Fix GH-16808: Segmentation fault in RecursiveIteratorIterator->current() with a xml element input #16825

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6 changes: 5 additions & 1 deletion ext/simplexml/simplexml.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2539,7 +2539,11 @@ static zval *php_sxe_iterator_current_data(zend_object_iterator *iter) /* {{{ */
{
php_sxe_iterator *iterator = (php_sxe_iterator *)iter;

return &iterator->sxe->iter.data;
zval *data = &iterator->sxe->iter.data;
if (Z_ISUNDEF_P(data)) {
return NULL;
}
return data;
}
/* }}} */

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12 changes: 12 additions & 0 deletions ext/simplexml/tests/gh16808.phpt
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@@ -0,0 +1,12 @@
--TEST--
GH-16808 (Segmentation fault in RecursiveIteratorIterator->current() with a xml element input)
--EXTENSIONS--
simplexml
--FILE--
<?php
$sxe = new SimpleXMLElement("<root />");
$test = new RecursiveIteratorIterator($sxe);
var_dump($test->current());
?>
--EXPECT--
NULL
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