From 4365207bcb49d8b467352ba3c8247519df7bcfd9 Mon Sep 17 00:00:00 2001
From: Georgi Gerganov <ggerganov@gmail.com>
Date: Wed, 4 May 2022 18:26:51 +0300
Subject: [PATCH] r2t2 : fix compile warning

---
 examples/r2t2/main.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/examples/r2t2/main.cpp b/examples/r2t2/main.cpp
index 7c9e416..68008d2 100644
--- a/examples/r2t2/main.cpp
+++ b/examples/r2t2/main.cpp
@@ -30,7 +30,10 @@ void processTone(int fd, double freq_hz, long duration_ms, bool useBeep, bool pr
     if (useBeep) {
         static char cmd[128];
         snprintf(cmd, 128, "beep -f %g -l %ld", freq_hz, duration_ms);
-        system(cmd);
+        int ret = system(cmd);
+        if (ret != 0) {
+            printf("system(\"%s\") failed with %d\n", cmd, ret);
+        }
         return;
     }