php-src/Zend/tests/026.phpt

--TEST--
Trying assign value to property when an object is not returned in a function
--FILE--
<?php

class foo {
	public function a() {
	}
}

$test = new foo;

$test->a()->a;
print "ok\n";

$test->a()->a = 1;
print "ok\n";

?>
--EXPECTF--
Notice: Trying to get property 'a' of non-object in %s on line %d
ok

Warning: Creating default object from empty value in %s on line %d
ok