From 91f7db1c686ab9b79fa822a76fc7eb7c6bc45f64 Mon Sep 17 00:00:00 2001
From: angelosa <lordkale4@gmail.com>
Date: Fri, 7 Mar 2025 19:12:26 +0100
Subject: [PATCH] scripts/build/check_include_guards.py: bail if no argument
 specified

---
 scripts/build/check_include_guards.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/scripts/build/check_include_guards.py b/scripts/build/check_include_guards.py
index f294cc6412f..bcc1bd889e9 100755
--- a/scripts/build/check_include_guards.py
+++ b/scripts/build/check_include_guards.py
@@ -28,6 +28,10 @@ if __name__ == '__main__':
     substpat = re.compile('[-.]')
     guardpat = re.compile('^ *# *ifndef +([^\s]+)(\s+.*)?')
     bad = False
+    if len(sys.argv) < 2:
+        sys.stderr.write("Error: requires at least one path defined\n")
+        sys.exit(2)
+
     for root in sys.argv[1:]:
         for path, subdirs, files in os.walk(root):
             prefix = 'MAME_' + '_'.join([n.upper() for n in pathsplit(os.path.relpath(path, root))]) + '_'