Re: [PATCH 5/5] compiler-gcc: document minimum version for `__no_sanitize_coverage__`

[Nathan Chancellor]

On Fri, Oct 21, 2022 at 01:59:56PM +0200, Miguel Ojeda wrote:
> The attribute was added in GCC 12.1.
> 
> This will simplify future cleanups, and is closer to what we do
> in `compiler_attributes.h`.
> 
> Link: https://godbolt.org/z/MGbT76j6G
> Signed-off-by: Miguel Ojeda <ojeda@xxxxxxxxxx>

Reviewed-by: Nathan Chancellor <nathan@xxxxxxxxxx>

> ---
>  include/linux/compiler-gcc.h | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h
> index 7f2c2bb73815..7af9e34ec261 100644
> --- a/include/linux/compiler-gcc.h
> +++ b/include/linux/compiler-gcc.h
> @@ -92,6 +92,9 @@
>  
>  #define __no_sanitize_undefined __attribute__((__no_sanitize_undefined__))
>  
> +/*
> + * Only supported since gcc >= 12
> + */
>  #if defined(CONFIG_KCOV) && __has_attribute(__no_sanitize_coverage__)
>  #define __no_sanitize_coverage __attribute__((__no_sanitize_coverage__))
>  #else
> -- 
> 2.38.1
> 
>