llvmbot wrote:

<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang-tidy

Author: Congcong Cai (HerrCai0907)

<details>
<summary>Changes</summary>

using decls can be used in cpp

---
Full diff: https://github.com/llvm/llvm-project/pull/77335.diff


2 Files Affected:

- (modified) clang-tools-extra/clang-tidy/misc/UnusedUsingDeclsCheck.h (+4-1) 
- (modified) clang-tools-extra/docs/ReleaseNotes.rst (+1-1) 


``````````diff
diff --git a/clang-tools-extra/clang-tidy/misc/UnusedUsingDeclsCheck.h 
b/clang-tools-extra/clang-tidy/misc/UnusedUsingDeclsCheck.h
index fa2a8799d098c3..aab9a57b8ba01d 100644
--- a/clang-tools-extra/clang-tidy/misc/UnusedUsingDeclsCheck.h
+++ b/clang-tools-extra/clang-tidy/misc/UnusedUsingDeclsCheck.h
@@ -26,7 +26,10 @@ class UnusedUsingDeclsCheck : public ClangTidyCheck {
   void registerMatchers(ast_matchers::MatchFinder *Finder) override;
   void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
   void onEndOfTranslationUnit() override;
-
+  bool isLanguageVersionSupported(const LangOptions &LangOpts) const override {
+    return LangOpts.CPlusPlus;
+  }
+  
 private:
   void removeFromFoundDecls(const Decl *D);
 
diff --git a/clang-tools-extra/docs/ReleaseNotes.rst 
b/clang-tools-extra/docs/ReleaseNotes.rst
index 1bd5a72126c10b..d7f46cede0370c 100644
--- a/clang-tools-extra/docs/ReleaseNotes.rst
+++ b/clang-tools-extra/docs/ReleaseNotes.rst
@@ -382,7 +382,7 @@ Changes in existing checks
 
 - Improved :doc:`misc-unused-using-decls
   <clang-tidy/checks/misc/unused-using-decls>` check to avoid false positive 
when
-  using in elaborated type.
+  using in elaborated type and only check cpp files.
 
 - Improved :doc:`modernize-avoid-bind
   <clang-tidy/checks/modernize/avoid-bind>` check to

``````````

</details>


https://github.com/llvm/llvm-project/pull/77335
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