[cfe-dev] [clang-tidy] How to ignore predefined macro definitions?
Melvin Vermeeren via cfe-dev
cfe-dev at lists.llvm.org
Thu Oct 4 10:06:51 PDT 2018
For a portable C project using POSIX extensions I typically use a predefined
macro, usually passing -D_POSIX_C_SOURCE=200112L or similar to the command-
line through the build system.
When also using the readability-identifier-naming checker in clang-tidy, with
option readability-identifier-naming.MacroDefinitionCase set to UPPER_CASE,
the following warning is emitted, due to the underscore prefix.
error: invalid case style for macro definition '_POSIX_C_SOURCE' [readability-
Usually /* NOLINT */ or similar can be used to silence the error, but in this
case it it predefined, so this in not possible. It also appears that clang-
tidy's -header-filter and -line-filter cannot be used to resolve this.
Is there some other way to ignore only the _POSIX_C_SOURCE definition? Or
perhaps some way to get it to ignore definitions passed on the command-line?
The current "workaround" is disabling the entire readability-identifier-naming
check, which is a shame as I find it very useful.
Version: Clang 6.0.0, Debian stretch backports, x86_64.
Thanks in advance,
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