Description:
------------
Firstly the function is_callable(array('B', 'noSuchMethod')) returns true even 
such static method does not exist. This could be caused by class A having magic 
method __call (which shouldn't accept static methods though).

Still because of this the code fails with segmentation fault.

Test script:
---------------
class A
{
    public function __call($method, $args)
    {
        if (stripos($method, 'get') === 0) {
            return $this->get();
        }
        
        throw new BadMethodCallException("No such method");
    }

    protected function get()
    {
        $class = get_class($this);
        $call = array($class, 'noSuchMethod');
        
        if (is_callable($call)) {
            call_user_func($call);
        }
    }

}

class B extends A {}

$input = new B();
echo $input->getEmail();


Expected result:
----------------
Script should end with no output.

Actual result:
--------------
Segmentation fault.