Description:
------------
Opening a page containing the code below causes a 502 when 
APC is enabled.

Reproduce code:
---------------
<?php
namespace Bug
{
	interface MyInterface
	{
		function text($text);
	}

	trait MyText
	{
		function text($text)
		{
			return htmlspecialchars($text, ENT_QUOTES, 'UTF-8');
		}
	}

	class MyImplementation implements MyInterface
	{
		use MyText;
	}
}

Expected result:
----------------
No errors

Actual result:
--------------
502