This is the mail archive of the mailing list for the GCC project.

Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: [Patch] Add "unavailable" attribute [ObjC V1 prerequisite].

On Fri, Apr 16, 2010 at 3:13 PM, Paolo Bonzini <> wrote:
> On 04/16/2010 08:57 PM, IainS wrote:
>> + ?if (TREE_UNAVAILABLE (member))
>> + ? ?error_unavailable_use (member, NULL_TREE);
>> + ?else if (TREE_DEPRECATED (member))
>> ? ? ?warn_deprecated_use (member, NULL_TREE);
> warn_deprecated_use is actually called only with the second parameter equal
> to NULL.
> So this means that you're effectively always looking up the attribute. You
> can then use just one flag bit, and in warn_deprecated_use (maybe renamed to
> diagnose_deprecated_use?) do either the deprecation warning or the
> unavailability error. ?(Maybe you can also pass the deprecated_state to it,
> or something like that).
> Effectively, TREE_DEPRECATED will mean "deprecated or unavailable". This
> should widely reduces the code duplication. ?(I haven't thought about
> type_is_unavailable and how to eliminate that duplication, but hey, I don't
> want to ruin the fun...)
> Paolo

Is that possible to combine unavailable_flag and deprecated_flag
into one flag?


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]