C to D conversion for function

[Sumit Raja]

On Monday, 29 April 2013 at 11:50:21 UTC, Timon Gehr wrote:

> In case you want to preserve the attribute:
>
> struct av_printf_format{ int fmtpos, attrpos; }
>
> @av_printf_format(2, 3) void av_log_ask_for_sample(void* avc, 
> const(char)* msg, ...);

Thanks. What does @av_printf_format(2, 3) do to the function?