[cfe-commits] r55417 - in /cfe/trunk: include/clang/AST/ASTContext.h include/clang/AST/Type.h include/clang/Basic/DiagnosticKinds.def include/clang/Basic/LangOptions.h include/clang/Parse/DeclSpec.h lib/AST/ASTContext.cpp lib/AST/Type.cpp lib/AST

[Eli Friedman]

On Wed, Aug 27, 2008 at 4:10 PM, steve naroff <snaroff at apple.com> wrote:
>
> On Aug 27, 2008, at 5:17 PM, Eli Friedman wrote:
>
>> On Wed, Aug 27, 2008 at 1:58 PM, steve naroff <snaroff at apple.com> wrote:
>>>
>>> I think it's important to note that *many* language features (ObjC, many
>>> GCC
>>> extensions) don't have specifications (yet we've made forward progress,
>>> using GCC as our reference implementation).
>>
>> I wasn't really trying to make a point about whether we need a
>> specification for everything we implement.  The issue here is that, as
>> far as I know, there isn't *any* documentation, *any* existing
>> reference implementation, or even any reference to the existence of
>> the "blocks" extension publicly available outside of this thread.
>>
>
> Apple shipped a developer preview version of GCC that implements blocks.
> Since you aren't a registered Apple developer, you are unaware of this
> (reference) implementation.
>
> This is really just a simple issue of timing.

Okay, so there is a reference implementation already... I wasn't aware
of that.  It's still really difficult to review without any publicly
available documentation, though.  (That said, I'm a little surprised I
wasn't able to find anything online about it...)

-Eli