[llvm-branch-commits] [clang-tools-extra] release/20.x: [clang-tidy] Do not pass any file when listing checks in run_clang_ti… (#137286) (PR #137775)

[via llvm-branch-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang-tools-extra

Author: None (llvmbot)

<details>
<summary>Changes</summary>

Backport 014ab736dc741f24c007f9861e24b31faba0e1e7

Requested by: @<!-- -->carlosgalvezp

---
Full diff: https://github.com/llvm/llvm-project/pull/137775.diff


2 Files Affected:

- (modified) clang-tools-extra/clang-tidy/tool/run-clang-tidy.py (+4-3) 
- (modified) clang-tools-extra/docs/ReleaseNotes.rst (+3) 


``````````diff
diff --git a/clang-tools-extra/clang-tidy/tool/run-clang-tidy.py b/clang-tools-extra/clang-tidy/tool/run-clang-tidy.py
index f1b934f7139e9..8741147a4f8a3 100755
--- a/clang-tools-extra/clang-tidy/tool/run-clang-tidy.py
+++ b/clang-tools-extra/clang-tidy/tool/run-clang-tidy.py
@@ -87,7 +87,7 @@ def find_compilation_database(path: str) -> str:
 
 
 def get_tidy_invocation(
-    f: str,
+    f: Optional[str],
     clang_tidy_binary: str,
     checks: str,
     tmpdir: Optional[str],
@@ -147,7 +147,8 @@ def get_tidy_invocation(
         start.append(f"--warnings-as-errors={warnings_as_errors}")
     if allow_no_checks:
         start.append("--allow-no-checks")
-    start.append(f)
+    if f:
+        start.append(f)
     return start
 
 
@@ -490,7 +491,7 @@ async def main() -> None:
 
     try:
         invocation = get_tidy_invocation(
-            "",
+            None,
             clang_tidy_binary,
             args.checks,
             None,
diff --git a/clang-tools-extra/docs/ReleaseNotes.rst b/clang-tools-extra/docs/ReleaseNotes.rst
index 2ab597eb37048..0b2e9c5fabc36 100644
--- a/clang-tools-extra/docs/ReleaseNotes.rst
+++ b/clang-tools-extra/docs/ReleaseNotes.rst
@@ -190,6 +190,9 @@ Improvements to clang-tidy
 - Fixed bug in :program:`clang-tidy` by which `HeaderFilterRegex` did not take
   effect when passed via the `.clang-tidy` file.
 
+- Fixed bug in :program:`run_clang_tidy.py` where the program would not
+  correctly display the checks enabled by the top-level `.clang-tidy` file.
+
 New checks
 ^^^^^^^^^^
 

``````````

</details>


https://github.com/llvm/llvm-project/pull/137775