Description:
------------
Not sure about the summary, but I don't think this is intended behaviour (I double checked the uniform_variable_syntax and AST RFC) OR the error should be fixed.

Test script:
---------------
<?php

class B
{
	public function __get($name)
	{
		$this->__set($name, new C);
		return $this->$name;
	}

	public function __set($name, $value)
	{
		$this->$name = $value;
	}
}

class C
{
	public function test()
	{
		return new D;
	}
}

class D
{
	public $d;
}


$b = new B;
$b->c->test()->d = 'waa';
echo 'first call success' . PHP_EOL;

$b->c->test();
echo 'just a call to test() works' . PHP_EOL;

$b->c->test()->d = 'waa';
echo 'second call success' . PHP_EOL;

Expected result:
----------------
first call success
just a call to test() works
second call success

Actual result:
--------------
first call success
just a call to test() works

Fatal error: Call to a member function test() on unknown in /home/arjen/phpng/testcase.php on line 38