These functions actually exist and work in current day distributions (I am on ubuntu 13.10, 14.04 and 14.10) but are not documented in any way. I actually found out that these functions exist using the pthread library on win32...:) These functions determine whether a futex is robust or not. I have checked the latest version of manpages to make sure that it is indeed missing. Cheers, Mark -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html