linux-kernel - Re: make sure swap arguments are the same type? (was: Re: [PATCH] crypto: rmd320

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Date:   Fri, 20 Jul 2018 22:34:56 -0700
From:   Joe Perches <joe@...ches.com>
To:     "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc:     linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
        Pablo Neira Ayuso <pablo@...filter.org>
Subject: Re: make sure swap arguments are the same type? (was: Re: [PATCH]
 crypto: rmd320 - use swap macro in rmd320_transform)

On Fri, 2018-07-20 at 10:43 -0500, Gustavo A. R. Silva wrote:
> Hi Joe,
> 
> I like the idea. I'll take a look at the cases you mention and see
> if I can make them work with your version of swap.
> 
> BTW, I wonder if it would be more convenient to trigger a build warning
> instead of an error.
> 
> What do you think?

I can't think of a way to have a #pragma (or _Pragma equivalent)
emit a warning on a condition.