From 48c7fee534ff6568f0e1dbbecc14aa658b9eba7a Mon Sep 17 00:00:00 2001
From: YAMAMOTO Takashi <yamamoto@midokura.com>
Date: Fri, 20 Nov 2020 16:48:40 +0900
Subject: [PATCH] include/debug.h: Apply sysloglike to _none

---
 include/debug.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/debug.h b/include/debug.h
index dcebe4c099..e3c16db05c 100644
--- a/include/debug.h
+++ b/include/debug.h
@@ -105,7 +105,9 @@
  */
 
 #ifdef CONFIG_CPP_HAVE_VARARGS
-#  define _none(x...)
+/* don't call syslog while performing the compiler's format check. */
+#  define _none(format, ...) \
+    do { if (0) syslog(LOG_ERR, format, ##__VA_ARGS__); } while (0)
 #else
 #  define _none       (void)
 #endif