--- IO-AIO/AIO.pm 2016/06/09 03:15:37 1.262 +++ IO-AIO/AIO.pm 2016/07/12 20:46:33 1.263 @@ -2043,7 +2043,8 @@ Simply calls the C function (see its manpage for details). The following advice constants are available: C, C, -C, C, C. +C, C, C, +C. On systems that do not implement C, this function returns ENOSYS, otherwise the return value of C.