[libc-commits] [PATCH] D114301: [libc] update tidy rules to fix variable formatting

Michael Jones via Phabricator via libc-commits libc-commits at lists.llvm.org
Mon Dec 6 16:51:54 PST 2021

michaelrj added inline comments.

Comment at: libc/CMakeLists.txt:63
+      Checks: cppcoreguidelines-avoid-goto")
+    endif()
sivachandra wrote:
> Do we still require this?
yes. The variables in `build/projects/libc/config/linux/syscall.h` are of a specific format (that being the names of specific registers), and the formatter will raise errors if those aren't specifically ignored.

Comment at: libc/src/.clang-tidy:3
 HeaderFilterRegex: '.*'
 WarningsAsErrors: 'llvmlibc-*'
sivachandra wrote:
> Can we add `readability-*` rules also to this list?
not with the patch as it currently is, because in the generated `signal.h` file, the function `sigaction` is being renamed to `__sigaction` by the macro `#define sigaction __sigaction`, which for some reason ignores all of the exceptions I have put in place to handle it. If we rename the struct `__sigaction` to something that the linter doesn't think would be formatted to `sigaction` (e.g. `__sigaction_struct`) then it works fine, but I don't know if that's an acceptable solution.

Comment at: libc/src/.clang-tidy:24
+  - key:             readability-identifier-naming.GlobalFunctionIgnoredRegexp
+    value:           "^.+$"
+  - key:             readability-identifier-naming.ConstexprVariableCase
sivachandra wrote:
> Do we still need this blanket ignore?
No, removed.

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