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| author | Tavian Barnes <tavianator@tavianator.com> | 2023-11-15 10:04:57 -0500 |
|---|---|---|
| committer | Tavian Barnes <tavianator@tavianator.com> | 2023-11-15 10:04:57 -0500 |
| commit | f4e8084414e07a8e03cb279090bbcf9eea76ed1e (patch) | |
| tree | abdd3472df66c5661e494a0e5bf358b1ee8124ea /src/config.h | |
| parent | fb4760db85c552b0f538f7af2ad40fa631c20540 (diff) | |
| download | bfs-f4e8084414e07a8e03cb279090bbcf9eea76ed1e.tar.xz | |
config: New attr_maybe_unused macro
Diffstat (limited to 'src/config.h')
| -rw-r--r-- | src/config.h | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/src/config.h b/src/config.h index a474fb3..9f95674 100644 --- a/src/config.h +++ b/src/config.h @@ -186,7 +186,7 @@ typedef long double max_align_t; // Wrappers for attributes /** - * Silence compiler warnings about switch/case fall-throughs. + * Silence warnings about switch/case fall-throughs. */ #if __has_c_attribute(fallthrough) # define fallthru [[fallthrough]] @@ -197,6 +197,17 @@ typedef long double max_align_t; #endif /** + * Silence warnings about unused declarations. + */ +#if __has_c_attribute(maybe_unused) +# define attr_maybe_unused [[maybe_unused]] +#elif __has_attribute(unused) +# define attr_maybe_unused __attribute__((unused)) +#else +# define attr_maybe_unused +#endif + +/** * Warn if a value is unused. */ #if __has_c_attribute(nodiscard) |