From 5190efbdd58d44e5f8b874e50a063300f25e392f Mon Sep 17 00:00:00 2001
From: hao0012 <709704094@qq.com>
Date: Wed, 25 Dec 2024 18:32:42 +0800
Subject: [PATCH] fix(run_clang_format.py): Add early return for empty
 `formatted_filenames` in check function.

If `formatted_filenames` is empty, it will run `clang-format` with the `-i` flag on an empty list, resulting `error: cannot use -i when reading from stdin`
---
 build_support/run_clang_format.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/build_support/run_clang_format.py b/build_support/run_clang_format.py
index 584c4cc4d..fb1160f07 100755
--- a/build_support/run_clang_format.py
+++ b/build_support/run_clang_format.py
@@ -40,6 +40,8 @@ def check(arguments, source_dir):
             [filename for filename in source_files
              if not any((fnmatch.fnmatch(filename, exclude_glob)
                          for exclude_glob in exclude_globs))])
+    if len(formatted_filenames) == 0:
+        return
 
     if arguments.fix:
         if not arguments.quiet: