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Date: Thu, 16 Jan 2014 08:05:28 -0600
From: Eric van Gyzen <eric@vangyzen.net>
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To: Hans Petter Selasky <hps@bitfrost.no>, 
 "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org>
Subject: Re: Make "sys/queue.h" usable with C++
References: <52D7D302.3090403@bitfrost.no>
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On 01/16/2014 06:39 AM, Hans Petter Selasky wrote:
> Hi,
>
> I'm using "sys/queue.h" with some C++ programs. The only problem is that
> you cannot make an ENTRY() using classes without getting some compiler
> warnings, because all macros in "sys/queue.h" assume "struct".
>
> My simple patch is to add something like:
>
> #ifdef "C++"
> #define QUEUE_STRUCT
> #else
> #define QUEUE_STRUCT struct
> #endif
>
> And use QUEUE_STRUCT instead of "struct" everywhere inside
> "sys/queue.h". Any opinions about this?

Sounds great to me...not that my opinion matters much.  :)

I expect you will want to use "#ifdef __cplusplus".

Eric