Increment nfds when coming from startup_pipe.

If we have to increase nfds because startup_pipe[0] is above any of the
descriptors passed in the fd_sets, we also need to add 1 to nfds since
select takes highest FD number plus one.  bz#3345 from yaroslav.kuzmin
at vmssoftware.com.

diff --git a/openbsd-compat/bsd-pselect.c b/openbsd-compat/bsd-pselect.c
index fff1bf54f72c2e06acfa85ac03b93980b7405b04..b3632086368a6b5cc639a8e57c2d08006af440f4 100644 (file)
--- a/openbsd-compat/bsd-pselect.c
+++ b/openbsd-compat/bsd-pselect.c
@@ -188,7 +188,7 @@ pselect(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
        if (unmasked) {
                pselect_notify_setup();
                pselect_notify_prepare(readfds);
-               nfds = MAX(nfds, notify_pipe[0]);
+               nfds = MAX(nfds, notify_pipe[0] + 1);
        }
 
        /* Unmask signals, call select then restore signal mask. */