Description:
------------
When setting a callback function from within a function, php just segfaults whenever it should call the callback handler.

When I remove the init() function and put the code in the main of the script, it works perfectly.



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

        init ();

        $mc->set ('key', 'value');

        function init ()
        {
                global $mc;

                $mc = new Memcache ();
                if ($mc->addServer ('netlog', 11212, TRUE, 1, 1, 1, TRUE, '__errorCallback') === FALSE)
                {
                        die ("Unable to connect\n");
                }
        }

        function __errorCallback ($host, $tcpPort, $udpPort, $error, $errno)
        {
                die ("Memcache error '$host' '$tcpPort' '$udpPort' '$error' '$errno'\n");
        }

        die ("OK\n");

?>

Expected result:
----------------
Memcache error 'localhost' '11212' '0' 'Connection refused' '111'

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

Program received signal SIGSEGV, Segmentation fault.
0x00000000006d4dad in zend_object_store_get_object (zobject=0x2b4de56e00d8) at /usr/src/php-5.2.6/Zend/zend_objects_API.c:255
255             return EG(objects_store).object_buckets[handle].bucket.obj.object;
(gdb) bt
#0  0x00000000006d4dad in zend_object_store_get_object (zobject=0x2b4de56e00d8) at /usr/src/php-5.2.6/Zend/zend_objects_API.c:255
#1  0x00000000006d0d61 in zend_objects_get_address (zobject=0x2b4de56e00d8) at /usr/src/php-5.2.6/Zend/zend_objects.c:140
#2  0x00000000006d106d in zend_std_get_properties (object=0x2b4de56e00d8) at /usr/src/php-5.2.6/Zend/zend_object_handlers.c:55
#3  0x00002b4de865025f in php_mmc_failure_callback (pool=0x2b4de56e0580, mmc=0x10b69b0, param=0x2b4de56e00d8) at /usr/src/memcache-3.0.1/memcache.c:939