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PR https://github.com/llvm/llvm-project/pull/91400 broke the usage of HeaderFilterRegex via config file, because it is now created at a different point in the execution and leads to a different value. The result of that is that using HeaderFilterRegex only in the config file does NOT work, in other words clang-tidy stops triggering warnings on header files, thereby losing a lot of coverage. This patch reverts the logic so that the header filter is created upon calling the getHeaderFilter() function. Additionally, this patch adds 2 unit tests to prevent regressions in the future: - One of them, "simple", tests the most basic use case with a single top-level .clang-tidy file. - The second one, "inheritance", demonstrates that the subfolder only gets warnings from headers within it, and not from parent headers. Fixes #118009 Fixes #121969 Fixes #133453 Co-authored-by: Carlos Gálvez <carlos.galvez@zenseact.com>
//===----------------------------------------------------------------------===// // Clang Tools repository //===----------------------------------------------------------------------===// Welcome to the repository of extra Clang Tools. This repository holds tools that are developed as part of the LLVM compiler infrastructure project and the Clang frontend. These tools are kept in a separate "extra" repository to allow lighter weight checkouts of the core Clang codebase. All discussion regarding Clang, Clang-based tools, and code in this repository should be held using the standard Clang forum: https://discourse.llvm.org/c/clang Code review for this tree should take place on the standard Clang patch and commit lists: http://lists.llvm.org/mailman/listinfo/cfe-commits If you find a bug in these tools, please file it in the LLVM bug tracker: https://github.com/llvm/llvm-project/issues/