Description:
------------
When attempting to use apc_store in a thread the script crashes.
To reproduce the pthreads and APC(u) extensions must be installed and enabled.

Setup on my Windows 7 and Windows 8.1:

Latest APC (3.1.13)
Latest pthreads (2.0.4)
Latest WampServer (with PHP 5.4.16)


Also reproduced on Ubuntu 13.10:

Latest APCu (4.0.4)
Latest pthreads (2.0.4)
Latest stable PHP (5.5.12)

Test script:
---------------
<?php
class MyThread extends Thread {
	public function run() {
		apc_store("key", "value");
	}
}
$thread = new MyThread();
$thread->start();

Expected result:
----------------
Script stores value and exits.

Actual result:
--------------
Script crashes or Segmentation fault.