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Diffstat (limited to 'sysdeps/unix/sysv/linux/bits/poll.h')
-rw-r--r--sysdeps/unix/sysv/linux/bits/poll.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/bits/poll.h b/sysdeps/unix/sysv/linux/bits/poll.h
index c6b1d2324a..4aec021fed 100644
--- a/sysdeps/unix/sysv/linux/bits/poll.h
+++ b/sysdeps/unix/sysv/linux/bits/poll.h
@@ -16,6 +16,9 @@
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
+#ifndef _SYS_POLL_H
+# error "Never use <bits/poll.h> directly; include <sys/poll.h> instead."
+#endif
/* Event types that can be polled for. These bits may be set in `events'
to indicate the interesting event types; they will appear in `revents'