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From: Yann Droneaud <ydroneaud@opteya.com>
To: Greg KH <greg@kroah.com>, David Howells <dhowells@redhat.com>
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Date: Wed, 05 Sep 2018 19:33:38 +0200
In-Reply-To: <20180905165552.GB25206@kroah.com>
References: <153616286704.23468.584491117180383924.stgit@warthog.procyon.org.uk>
         <20180905165552.GB25206@kroah.com>
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Subject: Re: [RFC] UAPI: Check headers by compiling all together as C++
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-fsdevel.vger.kernel.org>

Hi,

Le mercredi 05 septembre 2018 à 18:55 +0200, Greg KH a écrit :
> On Wed, Sep 05, 2018 at 04:54:27PM +0100, David Howells wrote:
> > 
> > Here's a set of patches that inserts a step into the build process to make
> > sure that the UAPI headers can all be built together with C++ (if the
> > compiler being used supports C++).  All but the final patch perform fixups,
> > including:
> 
> Wait, why do we care?  What has recently changed to start to directly
> import kernel uapi files into C++ code?
> 
> And if userspace wants to do this, can't they do the C namespace trick
> themselves when they do the import?  That must be how they are doing it
> today, right?
> 

They can't.


Adding extern "C" { } doesn't magically make "class" a non keyword.
Even if it was the case, writing C++ code using whatever->class would
probably broke because class is a keyword in C++.

-- 
Yann Droneaud
OPTEYA