This test should no longer fail, and is perfectly okay for Linux to test on too.

ext/date/tests/DateInterval_format_a.phpt

@@ -8,10 +8,7 @@ date.timezone=UTC
 --SKIPIF--
 <?php 
 if (!method_exists('DateInterval', 'format')) die("skip: method doesn't exist"); 
-if (substr(PHP_OS, 0, 3) != 'WIN') die("skip this test is for Windows platforms only");
 ?>
---XFAIL--
-Windows VC6 libs' floor()/ceil() choke on floats
 --FILE--
 <?php