linux-kernel - Re: [PATCH] ELF: add and use SUPRESS_WARN_UNUSED

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Message-ID: <YNbMyXR476FvEPaA@localhost.localdomain>
Date:   Sat, 26 Jun 2021 09:44:25 +0300
From:   Alexey Dobriyan <adobriyan@...il.com>
To:     Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Miguel Ojeda <ojeda@...nel.org>
Subject: Re: [PATCH] ELF: add and use SUPRESS_WARN_UNUSED_RESULT\

On Fri, Jun 25, 2021 at 11:57:21PM +0200, Miguel Ojeda wrote:
> On Fri, Jun 25, 2021 at 11:10 PM Alexey Dobriyan <adobriyan@...il.com> wrote:
> >
> > This is natural place. If you're supressing WUR, then the WUR macro
> > itself is defined implying that the header has been included.
> 
> I am not sure I understand -- I guess you are saying that your macro
> is only ever needed if `__must_check` is defined, which is what I
> meant by "related".
> 
> But this header was intentionally created to untangle others by
> keeping only attributes here.

Sure. But then developer needs to include another header to use SUPRESS_WUR.
As posted, attribute and its suppressor go hand to hand.