[PATCH v2 2/3] compiler_attributes.h: cleanups for GCC 4.9+

[Nathan Chancellor]

On 6/21/2021 4:18 PM, 'Nick Desaulniers' via Clang Built Linux wrote:
> Since
> commit 6ec4476ac825 ("Raise gcc version requirement to 4.9")
> we no longer support building the kernel with GCC 4.8; drop the
> preprocess checks for __GNUC_MINOR__ version. It's implied that if
> __GNUC_MAJOR__ is 4, then the only supported version of __GNUC_MINOR__
> left is 9.
> 
> Cc: Miguel Ojeda <ojeda at kernel.org>
> Signed-off-by: Nick Desaulniers <ndesaulniers at google.com>

Reviewed-by: Nathan Chancellor <nathan at kernel.org>

> ---
>   include/linux/compiler_attributes.h | 6 +++---
>   1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/include/linux/compiler_attributes.h b/include/linux/compiler_attributes.h
> index 225511b17223..84b1c970acb3 100644
> --- a/include/linux/compiler_attributes.h
> +++ b/include/linux/compiler_attributes.h
> @@ -27,7 +27,7 @@
>    */
>   #ifndef __has_attribute
>   # define __has_attribute(x) __GCC4_has_attribute_##x
> -# define __GCC4_has_attribute___assume_aligned__      (__GNUC_MINOR__ >= 9)
> +# define __GCC4_has_attribute___assume_aligned__      1
>   # define __GCC4_has_attribute___copy__                0
>   # define __GCC4_has_attribute___designated_init__     0
>   # define __GCC4_has_attribute___externally_visible__  1
> @@ -35,8 +35,8 @@
>   # define __GCC4_has_attribute___noclone__             1
>   # define __GCC4_has_attribute___no_profile_instrument_function__ 0
>   # define __GCC4_has_attribute___nonstring__           0
> -# define __GCC4_has_attribute___no_sanitize_address__ (__GNUC_MINOR__ >= 8)
> -# define __GCC4_has_attribute___no_sanitize_undefined__ (__GNUC_MINOR__ >= 9)
> +# define __GCC4_has_attribute___no_sanitize_address__ 1
> +# define __GCC4_has_attribute___no_sanitize_undefined__ 1
>   # define __GCC4_has_attribute___fallthrough__         0
>   #endif
>   
>