system/gcov: add show usage

Signed-off-by: yinshengkai <yinshengkai@xiaomi.com>
2022-09-27 16:15:51 +08:00 · 2022-09-27 16:15:51 +08:00 · 1b99543e8d
commit 1b99543e8d
parent d9ec9ca868
1 changed files with 5 additions and 0 deletions
--- 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)