From 8176119bc432d0ddb6187a4a84c81a7d9489153a Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert@cs.ucla.edu>
Date: Thu, 17 Mar 2011 23:42:43 -0700
Subject: [PATCH] * sound.c (wav_play): Initialize a variable to 0, to prevent
 undefined behavior.

---
 src/ChangeLog | 1 +
 src/sound.c   | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/ChangeLog b/src/ChangeLog
index b35cae14094..69aaa359887 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -3,6 +3,7 @@
 	* sound.c (wav_play, au_play, Fplay_sound_internal):
 	Fix pointer signedness.
 	(alsa_choose_format): Remove unused local var.
+	(wav_play): Initialize a variable to 0, to prevent undefined behavior.
 
 	* region-cache.c (insert_cache_boundary): Redo var to avoid shadowing.
 
diff --git a/src/sound.c b/src/sound.c
index c886c8c40b1..a2fe7ccc8ce 100644
--- a/src/sound.c
+++ b/src/sound.c
@@ -600,7 +600,7 @@ wav_play (struct sound *s, struct sound_device *sd)
   else
     {
       char *buffer;
-      int nbytes;
+      int nbytes = 0;
       int blksize = sd->period_size ? sd->period_size (sd) : 2048;
       int data_left = header->data_length;
 
-- 
2.39.2