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--TEST--
Test nullsafe on undefined variable
--FILE--
<?php
var_dump($foo?->bar);
var_dump($foo?->bar());
var_dump($foo);
?>
--EXPECTF--
Warning: Undefined variable $foo in %s.php on line 3
NULL
Warning: Undefined variable $foo in %s.php on line 4
NULL
Warning: Undefined variable $foo in %s.php on line 5
NULL
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