I guess:
https://github.com/pefoley2/passt/commit/6ae0bcb2bbdc10384346dda547db60f80c8a9676
makes that mostly pass with a recent LLVM version? If we need a dozen
of suppressions (maybe even 20-30?) I would say it's sustainable, but
more than that and it will start looking messy.
Ideally glibc would add the necessary annotations to their bits/ headers to make include-cleaner do the right thing,
but I'm not sure whether they'd want to do that in the first place.
And even if they did, it would take a while for a "fixed" version to roll out.
Let alone other libc implementations like musl.
I suppose another track would be to add special-case logic to clang-tidy to not recommend bits headers,
but I don't know if the LLVM maintainers would like that either.