Description:
------------
When I moved my classes hierarchy code from the PHP 4 to the PHP 5 and renamed costructors from the class names to "__construct", I faced a segmentation fault.

The constructor calls the parent's constructor. 
Parent's constructor calls another method, overloaded in the child's class.
That overloaded method from the child's class calls the constructor that calls the parent's constructor again.
But instead of the endless loop I get the segfault.

Reproduce code:
---------------
class A{
    function a1(){
        echo ' class a ';
    }
    function a2(){
        $this->a1();
    }
}
class B extends A {
    function a1(){
        $this->a2();
    }
    function __construct(){
        parent::a2();
    }
}
$a= new B();

Expected result:
----------------
The endless loop until script execution time expires:
B::a1() calls A::a2() and vice versa

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