Re: [Minios-devel] [UNIKRAFT PATCH] include/essentials: Introduce __maybe_unused attribute

[Florian Schmidt <Florian.Schmidt@xxxxxxxxx>]

On 07/27/2018 12:42 PM, Simon Kuenzer wrote:
> Introduce __maybe_unused attribute macro that should be used for cases
> where the usage of a symbol depends on a configuration.
>
> Code example:
>
>   #include <uk/config.h>
>
>   int myfunc(int myparam __maybe_unused)
>   {
>   #if CONFIG_USE_MYPARAM
>       return (myparam * 48); /* myparam is used */
>   #else
>       return 0; /* myparam is not used but shall stay to keep API */
>   #endif
>   }
>
> Signed-off-by: Simon Kuenzer <simon.kuenzer@xxxxxxxxx>
> Signed-off-by: Dafna Hirschfeld <dafna3@xxxxxxxxx>
Reviewed-by: Florian Schmidt <florian.schmidt@xxxxxxxxx>

Thanks for the patch, pushing to staging now.
> ---
>   include/uk/essentials.h | 3 +++
>   1 file changed, 3 insertions(+)
>
> diff --git a/include/uk/essentials.h b/include/uk/essentials.h
> index f9a7fd1..3c16e30 100644
> --- a/include/uk/essentials.h
> +++ b/include/uk/essentials.h
> @@ -55,6 +55,9 @@ extern "C" {
>   #ifndef __used
>   #define __used                 __attribute__((used))
>   #endif
> +#ifndef __maybe_unused
> +#define __maybe_unused         __attribute__((unused))
> +#endif
>   #ifndef __unused
>   #define __unused               __attribute__((unused))
>   #endif
--
Dr. Florian Schmidt
フローリアン・シュミット
Research Scientist,
Systems and Machine Learning Group
NEC Laboratories Europe
Kurfürsten-Anlage 36, D-69115 Heidelberg
Tel.     +49 (0)6221 4342-265
Fax:     +49 (0)6221 4342-155
e-mail:  florian.schmidt@xxxxxxxxx
============================================================
Registered at Amtsgericht Mannheim, Germany, HRB728558

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