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Message-ID: <20240109153249.GA205400@dev-arch.thelio-3990X>
Date: Tue, 9 Jan 2024 08:32:49 -0700
From: Nathan Chancellor <nathan@...nel.org>
To: Sergey Senozhatsky <senozhatsky@...omium.org>
Cc: Miguel Ojeda <ojeda@...nel.org>, Kees Cook <keescook@...omium.org>,
	"Gustavo A . R . Silva" <gustavo@...eddedor.com>,
	Nick Desaulniers <ndesaulniers@...gle.com>,
	Bill Wendling <morbo@...gle.com>,
	Justin Stitt <justinstitt@...gle.com>, linux-kernel@...r.kernel.org,
	llvm@...ts.linux.dev
Subject: Re: [PATCH] Compiler Attributes: counted_by: bump compiler versions

On Tue, Jan 09, 2024 at 10:36:24PM +0900, Sergey Senozhatsky wrote:
> Bump compiler versions, as GCC is expected to implement it
> in version 15 and current clang-18 still has no support for
> counted_by(). Also fix clang URL - the project has moved
> to github.
> 
> Signed-off-by: Sergey Senozhatsky <senozhatsky@...omium.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 28566624f008..1829c24c3357 100644
> --- a/include/linux/compiler_attributes.h
> +++ b/include/linux/compiler_attributes.h
> @@ -95,11 +95,11 @@
>  #endif
>  
>  /*
> - * Optional: only supported since gcc >= 14
> - * Optional: only supported since clang >= 18
> + * Optional: only supported since gcc >= 15
> + * Optional: only supported since clang >= 19

It is still possible in theory for this feature to make clang-18, as the
release/18.x branch is not scheduled to be cut until the fourth Tuesday
in January, which is two weeks from now. I don't have a good feeling for
how close that pull request is to being mergeable though, so this is
fine for now. I assume this won't go to Linus immediately so we would
have time to change it if necessary.

The link change is obviously good.

Reviewed-by: Nathan Chancellor <nathan@...nel.org>

I should probably go through and try to update all the other
review.llvm.org links to GitHub as well...

>   *
>   *   gcc: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108896
> - * clang: https://reviews.llvm.org/D148381
> + * clang: https://github.com/llvm/llvm-project/pull/76348
>   */
>  #if __has_attribute(__counted_by__)
>  # define __counted_by(member)		__attribute__((__counted_by__(member)))
> -- 
> 2.43.0.472.g3155946c3a-goog
> 

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