[Development] Having a reserved value for the platform enums was RE: Binary incompatible changes to Qt 4.8

[lars.knoll at nokia.com]

On 5/24/12 1:31 PM, "ext Shaw Andy" <Andy.Shaw at digia.com> wrote:

>[snip]
>
>> >The warning needs to go away, at least, provided that Qt *is* tested on
>> >Windows 8. Whether we add the enum or not, that's a bit orthogonal.
>> 
>> Yes, the warning needs to be fixed.
>> 
>> But I don't have any problems with adding the new enum in a patch level
>> release. The only thing it can break is that your code won't compile
>> against 4.8.1 anymore if you use it. This is really one of these cases
>> where we should make a small exception to our rule of not adding any API
>> to a patch level release.
>> 
>> Please go ahead and back port the change to 4.8.
>
>Since this could easily be a problem again in the future should we
>consider having a reserved value for the Windows and Mac platform version
>enums?  That way should it be decided that we want to add support for a
>new version of a platform in a maintenance release we could easily
>utilize the reserved one and then bump up the reserved one in the next
>minor release.

I don't think that really changes anything. In this case I think simply
adding new ones when required is ok.

Cheers,
Lars