From: = <4265913+mikebrady@users.noreply.github.com>
Date: Sat, 19 Nov 2022 09:05:26 +0000 (+0000)
Subject: Fix a bug in audio_alsa.c when there is no hardware device name.
X-Git-Tag: 4.1.1~2^2~23
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0b03f237952391c2ef8400adef11c7c39911d417;p=thirdparty%2Fshairport-sync.git

Fix a bug in audio_alsa.c when there is no hardware device name.
---

diff --git a/audio_alsa.c b/audio_alsa.c
index 62db843f..9a37f3f6 100644
--- a/audio_alsa.c
+++ b/audio_alsa.c
@@ -189,7 +189,9 @@ static int precision_delay_available() {
     // this is very crude -- if the device is a hardware device, then it's assumed the delay is
     // precise
     const char *output_device_name = snd_pcm_name(alsa_handle);
-    int is_a_real_hardware_device = (strstr(output_device_name, "hw:") == output_device_name);
+    int is_a_real_hardware_device = 0;
+    if (output_device_name != NULL)
+      is_a_real_hardware_device = (strstr(output_device_name, "hw:") == output_device_name);
 
     // The criteria as to whether precision delay is available
     // is whether the device driver returns non-zero update timestamps