X-Git-Url: https://git.xinqibao.xyz/slstatus.git/blobdiff_plain/bad8dc682dc81018a7f95080b5720cc467c17a6f..fb440d8f622142c11e98e4799b7adceb33cd23b0:/slstatus.c

diff --git a/slstatus.c b/slstatus.c
index fd27570..ba7f95a 100644
--- a/slstatus.c
+++ b/slstatus.c
@@ -88,8 +88,9 @@ smprintf(const char *fmt, ...)
 	va_end(ap);
 
 	ret = malloc(++len);
-	if (ret == NULL)
+	if (ret == NULL) {
 		err(1, "malloc");
+	}
 
 	va_start(ap, fmt);
 	vsnprintf(ret, len, fmt, ap);
@@ -500,7 +501,10 @@ vol_perc(const char *card)
 	snd_mixer_selem_id_free(s_elem);
 	snd_mixer_close(handle);
 
-	return smprintf("%d%%", ((uint_fast16_t)(vol * 100) / max));
+	if (max == 0)
+		return smprintf("%d%%", 0);
+	else
+		return smprintf("%d%%", ((uint_fast16_t)(vol * 100) / max));
 }
 
 static char *