a.hpp
test.cpp
Result
$ clang-tidy -checks=-*,llvm-header-guard test.cpp -header-filter=.*
a.hpp:1:1: warning: header is missing header guard [llvm-header-guard]
#pragma once
^
I think this check may give one inaccurate note here. Is it necessary to make changes to this situation? I want some suggestion about revising llvm-header-guard. Do not report this bug or give another note? I am willing to fix this. @PiotrZSL Thanks for your suggestion!