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> (cherry picked from commit 6333fa5160fbde4bd2cf6afe8856695c13ab621f)
The LLVM Compiler Infrastructure
Welcome to the LLVM project!
This repository contains the source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and run-time environments.
The LLVM project has multiple components. The core of the project is itself called "LLVM". This contains all of the tools, libraries, and header files needed to process intermediate representations and convert them into object files. Tools include an assembler, disassembler, bitcode analyzer, and bitcode optimizer.
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