From 74b220efb30d8b00307ad4dd56c66206bdfccf75 Mon Sep 17 00:00:00 2001
From: ratchov <ratchov@openbsd.org>
Date: Wed, 3 Mar 2021 09:40:43 +0000
Subject: [PATCH] sndioctl: Flush stdout before polling

If stdout is not flushed, output is not seen by programs using
sndioctl through a pipe (ex. "sndioctl -m | cat" displays nothing).

Patch from Erico Nogueira <ericonr@disroot.org>, idea
from Duncan Overbruck <mail@duncano.de>
---
 usr.bin/sndioctl/sndioctl.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/usr.bin/sndioctl/sndioctl.c b/usr.bin/sndioctl/sndioctl.c
index d95eb322437..aa174e77249 100644
--- a/usr.bin/sndioctl/sndioctl.c
+++ b/usr.bin/sndioctl/sndioctl.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: sndioctl.c,v 1.15 2020/06/28 05:21:39 ratchov Exp $	*/
+/*	$OpenBSD: sndioctl.c,v 1.16 2021/03/03 09:40:43 ratchov Exp $	*/
 /*
  * Copyright (c) 2014-2020 Alexandre Ratchov <alex@caoua.org>
  *
@@ -1022,6 +1022,7 @@ main(int argc, char **argv)
 			exit(1);
 		}
 		for (;;) {
+                       fflush(stdout);
 			nfds = sioctl_pollfd(hdl, pfds, POLLIN);
 			if (nfds == 0)
 				break;
-- 
2.20.1