[cfe-dev] How to verify clang-tidy checks applied to headers?

[Richard via cfe-dev]

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In article <bdfd9306-7233-6712-ad2c-85cfe61c47ab at jonas-toth.eu>,
    Jonas Toth via cfe-dev <cfe-dev at lists.llvm.org> writes:

> did you try something similar to `// RUN: clang-tidy -checks='-*,
> abseil-no-namespace' -header-filter='.*' %s -- -I %S/Inputs 2>&1 |
> FileCheck %s`?

Yeah, I tried something like that, but I didn't get it to work
properly.  I will look at it again to see if I can get the right
command-line.  It's been a couple years since I worked on clang-tidy
and some of my clang-fu has decayed away.  If I can find a pattern that
works, I'll enhance the helper script to support this directly.

> This pattern occurs multiple times in the test-framework: `git grep "|
> FileCheck" *.cpp` shows quite a view places, maybe there are other
> places that are more specific to your requirement?

Thanks for the pointer.
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