Description:
------------
See the error message below.

Reproduce code:
---------------
<?php

namespace foobar;

class foobar {
    const bar = 'foobar!';    
}

var_dump(namespace::bar); // Fatal error: Class 'foobar' not found

// var_dump(namespace::foobar::bar); # Ok, right


Expected result:
----------------
Some like "Constant 'bar' not found"

Actual result:
--------------
Fatal error: Class 'foobar' not found