From 552bfce3ed0998ea404447924547a80bfd7daff1 Mon Sep 17 00:00:00 2001
From: Matt Taylor <mattrtaylor@users.noreply.github.com>
Date: Tue, 19 Apr 2022 14:33:13 -0600
Subject: [PATCH] Initialize newly allocated channel map with a value of -1
 (off) for all channels.

https://github.com/FluidSynth/fluidsynth/pull/1081#discussion_r853430986
---
 src/drivers/fluid_coreaudio.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/drivers/fluid_coreaudio.c b/src/drivers/fluid_coreaudio.c
index 9519bca9..219c1eb1 100644
--- a/src/drivers/fluid_coreaudio.c
+++ b/src/drivers/fluid_coreaudio.c
@@ -148,7 +148,7 @@ set_channel_map(AudioUnit outputUnit, int audio_channels, const char *map_string
         return;
     }
 
-    FLUID_MEMSET(channel_map, 0, property_size);
+    FLUID_MEMSET(channel_map, 0xff, property_size);
 
     status = AudioUnitGetProperty(outputUnit,
                                   kAudioOutputUnitProperty_ChannelMap,