https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63651

Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2014-11-01
                 CC|                            |fxcoudert at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> ---
Some NSObject methods that used to return (id) now return (instancetype). Only
NSObject has this, and the list includes: self, retain, autorelease, init, new,
alloc*

The "What's new in OS X Yosemite" document at
https://developer.apple.com/Library/mac/releasenotes/MacOSX/WhatsNewInOSX/WhatsNewInOSX.pdf
says:

"Many frameworks on OS X have adopted small interface changes that take
advantage of modern Objective-C syntax: […] Initialization methods are updated
to have a return value of instancetype instead of id."

It is documented further in Apple docs, or in clang here:
http://clang.llvm.org/docs/LanguageExtensions.html

I suppose as a first approach, we could make it equivalent to id.

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