Re: Doesn't Xcode 4.2 support instancetype?
Re: Doesn't Xcode 4.2 support instancetype?
- Subject: Re: Doesn't Xcode 4.2 support instancetype?
- From: lowell <email@hidden>
- Date: Wed, 07 Dec 2011 23:40:29 -0800
It looks like the version of clang that comes with 4.2 is too old. In Xcode, if I set the compiler to a version newer (clang version 3.1 (trunk 145557)) than the one it came with, __has_feature(objc_instancetype) yields a YES.
--lowell
On Dec 7, 2011, at 8:33 PM, Jens Alfke wrote:
> The LLVM CLANG language extensions page* documents an Objective-C extension called “instancetype”. But when I tried to use this in Xcode 4.2 using the “Apple LLVM 3.0” compiler, it doesn’t recognize the extension. __has_feature(objc_instancetype) evaluates to false, and using “instancetype” as the return type of a method causes a syntax error. What’s going on?
>
> According to “clang --version” I’ve got "Apple clang version 3.0 (tags/Apple/clang-211.10.1) (based on LLVM 3.0svn)”.
>
> —Jens
>
> * http://clang.llvm.org/docs/LanguageExtensions.html#objc_instancetype
>
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