system/gcov: add show usage

Signed-off-by: yinshengkai <yinshengkai@xiaomi.com>
zouboan · Sep 27, 2022 · 1b99543 · 1b99543
1 parent d9ec9ca
commit 1b99543
Showing 1 changed file with 5 additions and 0 deletions.
diff --git 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)