Re: [PATCH] macros: do not use more type safe CONTAINEROF version if not requested

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> 
> On Tue, Mar 01, 2016 at 09:44:39AM +0000, Frediano Ziglio wrote:
> > This prevents incompatibility if users (like old spice-server/spice-gtk)
> > are not expected to have this additional restriction.
> > 
> > Signed-off-by: Frediano Ziglio <fziglio@xxxxxxxxxx>
> > ---
> >  spice/macros.h | 3 ++-
> >  1 file changed, 2 insertions(+), 1 deletion(-)
> > 
> > I defined a new SPICE_CONTAINEROF_MORESAFE macro to enable this extra check
> > on the type of member. Not really happy with the name.
> 
> SPICE_TYPESAFE_CONTAINEROF ?

I don't think macro can be even really typesafe.. it's more type safe :)

SPICE_MORE_TYPESAFE_CONTAINEROF ?

> This could go with a comment above saying that this define is used to
> avoid compilation breakage with older spice-server releases which
> triggered some errors without an additional patch.
> 

Can do it.

> > Could be something related to the version of spice-protocol expected works
> > out?
> 
> 
> I'm not sure what you are suggesting here.
> 

Somethink like

#define SPICE_PROTOCOL_MINIMUM 0x0c0a00 /* 0.12.10 */

in spice-server and

#ifndef SPICE_PROTOCOL_MINIMUM
#define SPICE_PROTOCOL_MINIMUM 0x0
#endif

#if SPICE_PROCOTOL_MINIMUM >= 0x0c0a00
// use more safe macro
#else
// compatible one
#endif

> Christophe
> 

Frediano
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