[cfe-commits] [PATCH] Add -fobjc-direct-class-refs
js at webkeks.org
Mon Jul 30 17:07:06 PDT 2012
Any news on this? As said, I already have the next patch ready I'd like to get in, so I'd really like to get this patch in first.
(vom iPhone gesendet)
Am 20.07.2012 um 16:45 schrieb Jonathan Schleifer <js at webkeks.org>:
> Am 19.07.2012 um 21:24 schrieb John McCall:
>> Could you explain why you're testing hasSubscripting in one place and isSubscriptPointerArithmetic in another?
> Yes, of course:
> In SemaExpr, it checks if the subscript is pointer arithmetic. In SemaExprObjC, it checks if subscripting is allowed with the runtime. These are, IMHO, two different things: A runtime could disallow pointer arithmetic _AND_ subscripting. Imagine you target OS X 10.5 x86_64: You have the fragile ABI and thus pointer arithmetic is disallowed. However, subscripting is not supported by the runtime (well, actually the framework).
> This is the reason why I decided it makes sense to use these two different runtime properties. They are, currently, the same, but you could change it in the way I just described later. I just wanted to be future-proof, that's all :). If you dislike it, feel free to reduce it to hasSubscripting.
> Looking forward to get that integrated, already have two other patches ready :).
> PS: I removed the two Davids from CC, as I think they are both subscribed and have no specific interest in this.
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