Description:
------------
When an exclusive lock is set on a file (flock) importing the file from any script (including the script itself) with require,require_once,include or .
include_once silently fails and imports nothing. 
Trying to lock the file from the same script works as expected.

Test script:
---------------
<?php //setLock.php
$theFile = fopen('thefile.html', 'rb'); //template file
flock($theFile, LOCK_EX); //accuire an exclusive lock on the file
sleep(10);
echo(require('someFile'));       <-- this silently fails
flock($theFile, LOCK_UN );//release the lock
echo(require('someFile'));       <-- this succeeds
phpinfo(); ?>
//////////////////////////////////////////////////////////////////////////////
<?php //getTheLockedFile.php
echo(require('someFile');) <-- this silently fails
?>

Expected result:
----------------
When excecuting setlock.php I expect it to succeed on both instances or die with the first require attempt

when simultaneously excecuting getTheLockedFile.php I expect excecution to be halted untill the setLock.php file completes or to die with an error.

Actual result:
--------------
When excecuting setlock.php the first require attempt fails silently (return 
value 1, no error) the seccond attempt succeeds as normal.

when simultaneously excecuting getTheLockedFile.php the require attempt fails silently (return value 1, no error)