linux-kernel - Re: [PATCH v2] mm: kmemleak: Use address-of operator on section symbols

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Message-ID: <20200220110535.GA103002@arrakis.emea.arm.com>
Date:   Thu, 20 Feb 2020 11:05:35 +0000
From:   Catalin Marinas <catalin.marinas@....com>
To:     Nathan Chancellor <natechancellor@...il.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, clang-built-linux@...glegroups.com,
        Nick Desaulniers <ndesaulniers@...gle.com>
Subject: Re: [PATCH v2] mm: kmemleak: Use address-of operator on section
 symbols

On Wed, Feb 19, 2020 at 10:15:51PM -0700, Nathan Chancellor wrote:
> Clang warns:
> 
> These are not true arrays, they are linker defined symbols, which are
> just addresses. Using the address of operator silences the warning and
> does not change the resulting assembly with either clang/ld.lld or
> gcc/ld (tested with diff + objdump -Dr).
> 
> Link: https://github.com/ClangBuiltLinux/linux/issues/895
> Suggested-by: Nick Desaulniers <ndesaulniers@...gle.com>
> Signed-off-by: Nathan Chancellor <natechancellor@...il.com>

Acked-by: Catalin Marinas <catalin.marinas@....com>