Description:
------------
With APC, after the script has been cached i.e. after 1 second from the first hit without modifying or restarting apache, the script causes an error on the $c = new C;" line
it seems that APC loses all the names data because i originally ran into this bug for trying to access self::CONST_NAME in an previously existing instance, then i found out that not only it loses the class constants, but the class names as well.


Test script:
---------------
<?php

function sess_open($savePath, $sessionName) {
  return true;
}
function sess_close() {
  return true;
}
function sess_read($sessionId) {
  return "";
}
function sess_write($sessionId, $data) {
  $c = new C;
  $c->m();
  return true;
}
function sess_destroy($sessionId) {
  return true;
}
function sess_gc($lifetime) {
  return true;
}

session_set_save_handler("sess_open", "sess_close", "sess_read", "sess_write", "sess_destroy", "sess_gc");
session_start();

class C {
  public function m() {
    print "ok\n";
  }
}

print "finish\n";


Expected result:
----------------
finish ok

Actual result:
--------------
finish Fatal error: Class 'C' not found in (omitted) on line 13