From: Jaroslav Kysela <perex@perex.cz>
Date: Thu, 19 May 2022 15:35:08 +0000 (+0200)
Subject: pcm: fix for the unitialized write buffer
X-Git-Tag: v1.2.7~19
X-Git-Url: https://git.alsa-project.org/?a=commitdiff_plain;h=a53c2b25f1c7950c8a46f790dc19f7b57779ad78;p=alsa-lib.git

pcm: fix for the unitialized write buffer

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
---

diff --git a/aserver/aserver.c b/aserver/aserver.c
index 28387021..71b8a3cb 100644
--- a/aserver/aserver.c
+++ b/aserver/aserver.c
@@ -530,7 +530,7 @@ transport_ops_t pcm_shm_ops = {
 static int ctl_handler(waiter_t *waiter, unsigned short events)
 {
 	client_t *client = waiter->private_data;
-	char buf[1];
+	char buf[1] = "";
 	ssize_t n;
 	if (events & POLLIN) {
 		n = write(client->poll_fd, buf, 1);
diff --git a/src/pcm/pcm_shm.c b/src/pcm/pcm_shm.c
index 26a27a57..12828958 100644
--- a/src/pcm/pcm_shm.c
+++ b/src/pcm/pcm_shm.c
@@ -61,7 +61,7 @@ static long snd_pcm_shm_action_fd0(snd_pcm_t *pcm, int *fd)
 {
 	snd_pcm_shm_t *shm = pcm->private_data;
 	int err;
-	char buf[1];
+	char buf[1] = "";
 	volatile snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
 
 	err = write(shm->socket, buf, 1);
@@ -113,7 +113,7 @@ static long snd_pcm_shm_action(snd_pcm_t *pcm)
 {
 	snd_pcm_shm_t *shm = pcm->private_data;
 	int err, result;
-	char buf[1];
+	char buf[1] = "";
 	volatile snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
 
 	if (ctrl->hw.changed || ctrl->appl.changed)
@@ -148,7 +148,7 @@ static long snd_pcm_shm_action_fd(snd_pcm_t *pcm, int *fd)
 {
 	snd_pcm_shm_t *shm = pcm->private_data;
 	int err;
-	char buf[1];
+	char buf[1] = "";
 	volatile snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
 
 	if (ctrl->hw.changed || ctrl->appl.changed)