From 1b99543e8d21a6e5db04ae6ef5d8c602c6811be7 Mon Sep 17 00:00:00 2001
From: yinshengkai <yinshengkai@xiaomi.com>
Date: Tue, 27 Sep 2022 16:15:51 +0800
Subject: [PATCH] system/gcov: add show usage

Signed-off-by: yinshengkai <yinshengkai@xiaomi.com>
---
 system/gcov/gcov.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/system/gcov/gcov.c b/system/gcov/gcov.c
index 6e8caace5..bf4dbf549 100644
--- a/system/gcov/gcov.c
+++ b/system/gcov/gcov.c
@@ -57,6 +57,11 @@ int main(int argc, FAR char *argv[])
 {
   int option;
 
+  if (argc < 2)
+    {
+      show_usage(argv[0]);
+    }
+
   while ((option = getopt(argc, argv, "drh")) != ERROR)
     {
       switch (option)