[clang-tools-extra] [clang-tidy] New option `CompilationArgsToRemoveRegex` to remove arguments from the command line (PR #111453)

[Julian Schmidt via cfe-commits]

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In-Reply-To: <llvm.org/llvm/llvm-project/pull/111453 at github.com>


5chmidti wrote:

I think the regex solution might be brittle/not clean from a user perspective, with potential for a small amount of maintenance. Instead, I would also suggest a flag to error, warn, or silence these, defaulting to a warning.

Using `compile_commands.json` from a build configured for another compiler should provide a good experience.

- problem: `--flag` is not known to Clang, but would enable some part through a macro define -> missed analysis of important part of the code base?
- fine: `--other` is not known to Clang, but also not important to analysis because it does something during code-gen, etc.

The `--flag` example is why I'd be a bit worried about fully silencing these unknown flags, instead of a downgrade to a warning.

https://github.com/llvm/llvm-project/pull/111453