[PHP-DEV] Leaking references

[Wez Furlong]

[I can't reach the PHP web site (100% packet loss), so I can't open a bug
report at this time]

I have found a leak in the Zend engine:

class A
{
        var $t = null;

        function &run(&$t)
        {
                $this->t = &$t;
                return $this->t->run();
        }

}

class C {
        var $obj = null;

        function &load_and_run()
        {
                $this->obj = & new A;
                return $this->obj->run($this);
        }

        function &run()
        {
                return "";
        }
}

function &load_it()
{
        $t =& new C;
        echo $t->load_and_run();
}

echo load_it();

Running this script yields:

zend_hash.c(291) :  Freeing 0x0818E474 (37 bytes), script=leak.php
Last leak repeated 1 time
zend_hash.c(202) :  Freeing 0x08193D1C (20 bytes), script=leak.php
Last leak repeated 1 time
./zend_execute.c(1848) :  Freeing 0x0818E414 (48 bytes), script=leak.php
zend_API.c(208) : Actual location (location was relayed)
Last leak repeated 1 time
./zend_execute.c(1847) :  Freeing 0x08193F3C (12 bytes), script=leak.php
Last leak repeated 1 time

I know the script looks odd - it's part of a complex script that dynamically
includes scripts to load classes.
You get more leaks if you add more member variables to class A.

I would guess that something (possibly the instance of class A) is not being
freed/released somewhere that it should.

--Wez.

PS: If one of you guys could put this in the bug DB under my name, I would
appreciate it.


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