Description:
------------
I set my own error handle function and then i try to include a non-existent file (aga.php).The problem is when i make a
var_dump(debug_backtrace()) in my error handle function it shows me wrong results.

Reproduce code:
---------------
<?php

function ourErrorHandler($errNo, $errStr, $errFile, $errLine)
{

echo "<PRE>";
var_dump(debug_backtrace());
echo "</PRE>";
}


// set the user error handler to be the above 

$oldErrorHandler = set_error_handler("ourErrorHandler", error_reporting());

require_once("aga.php");

?>

Expected result:
----------------
array(2) {
  [0]=>
  array(3) {
    ["file"]=>
    string(28) "/var/www/html/dir1/file2.php"
    ["line"]=>
    int(15)
    ["function"]=>
    string(15) "ourErrorHandler"
  }
  [1]=>
  array(4) {
    ["file"]=>
    string(28) "/var/www/html/dir1/file2.php"
    ["line"]=>
    int(15)
    ["args"]=>
    array(1) {
     [0]=>
     string(28) "aga.php" < - this should be here
    }
    ["function"]=>
    string(12) "require_once"
  }
}

Actual result:
--------------
array(2) {
  [0]=>
  array(3) {
    ["file"]=>
    string(28) "/var/www/html/dir1/file2.php"
    ["line"]=>
    int(15)
    ["function"]=>
    string(15) "ourErrorHandler"
  }
  [1]=>
  array(4) {
    ["file"]=>
    string(28) "/var/www/html/dir1/file2.php"
    ["line"]=>
    int(15)
    ["args"]=>
    array(1) {
     [0]=>
     string(28) "/var/www/html/dir1/file2.php" <- is wrong
    }
    ["function"]=>
    string(12) "require_once"
  }
}