backward compatibility in pcap_loop(3PCAP)?

[Denis Ovsienko via tcpdump-workers <tcpdump-workers () lists tcpdump org>]

> --- Begin Message ---
>
>
> From: Denis Ovsienko <denis () ovsienko info>
>
> Date: Fri, 21 Aug 2020 22:48:34 +0100
>
> Hi.
>
> The man page says:
>
>        (In  older  versions  of libpcap, the behavior when cnt was 0
>        was undefined; different platforms and devices  behaved
>        differently,  so  code that  must work with older versions of
>        libpcap should use -1, not 0, as the value of cnt.)
>
> Would it make sense to move this paragraph to a BACKWARD COMPATIBILITY
> section and to tell which specific version started to recognise 0 as a
> valid value?
>
> -- 
>     Denis Ovsienko
>
> --- End Message ---
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