=== modified file 'demo-async.c'
--- demo-async.c	2011-08-25 21:52:06 +0000
+++ demo-async.c	2011-03-31 10:08:43 +0000
@@ -1,6 +1,3 @@
-// <poll.h> might need this for sigset_t
-#define _XOPEN_SOURCE 600
-
 #include <poll.h>
 #include <stdio.h>