Re: [FFmpeg-devel] [PATCH] fftools/objpool: Don't use return with expression when returning void

[Hendrik Leppkes <h.leppkes@gmail.com>]

On Sat, Jul 23, 2022 at 6:24 PM Andreas Rheinhardt
<andreas.rheinhardt@outlook.com> wrote:
>
> Using tail calls with functions returning void is forbidden
> (C99/C11 6.8.6.4: "A return statement with an expression shall not appear
> in a function whose return type is void.") GCC emits a warning
> because of this when using -pedantic: "ISO C forbids ‘return’ with
> expression, in function returning void"
>
> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
> ---
>  fftools/objpool.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/fftools/objpool.c b/fftools/objpool.c
> index b1561ecd69..06e4f069a5 100644
> --- a/fftools/objpool.c
> +++ b/fftools/objpool.c
> @@ -101,11 +101,13 @@ static void *alloc_frame(void)
>
>  static void reset_packet(void *obj)
>  {
> -    return av_packet_unref(obj);
> +    av_packet_unref(obj);
> +    return;
>  }
>  static void reset_frame(void *obj)
>  {
> -    return av_frame_unref(obj);
> +    av_frame_unref(obj);
> +    return;
>  }
>

Maybe leave out the return's entirely? Its not a pattern we typically
use to have return at the end of a function.

- Hendrik
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