Description:
------------
If I use  scandir on a virtual drive it returns: 

Warning: scandir(w:): failed to open dir: Bad file descriptor

I have also tried w:\ and w:/ to the same result.

However... scandir("w:\\folder") works just fine.


realpath does almost the same thing... if from w: I run a script with:

<?
echo realpath(".");
?>

and run it like 

php -n script.php

... I get nothing


If I go into "folder" and run it

php -n w:\script.php

I returns

w:\folder


Just to repeat - this only seems to happen in a Virtual (subst) root path.  Inside folders in the virtual path work fine.

Both incidents happen using the -n flag, so there is no possible setting issue.


Reproduce code:
---------------
<?
echo realpath(".")."\n";
print_r(scandir("."));
?>

Expected result:
----------------
Current Path and an array dump of the files.

Actual result:
--------------
Nothing for realpath and "Warning: scandir(w:): failed to open dir: Bad file descriptor" for scandir