[cfe-dev] New C++0x feature support in Clang

[Douglas Gregor]

On Feb 4, 2011, at 11:33 AM, Larry Evans wrote:

> On 01/26/11 15:45, Douglas Gregor wrote:
>> Clang has recently gotten much-improved support for the upcoming C++0x standard. In particular, top-of-tree Clang now supports a number of C++0x features:
>> 
>> 	- Rvalue references (including rvalue references for *this)
>> 	- Variadic templates
>> 	- Inline namespaces
>> 	- Late-specified return types
>> 	- Decltype
>> 
>> You can turn on C++0x support with the -std=gnu++0x (or, if you want to be more pedantic, -std=c++0x).
>> 
>> Give it a spin, write some tests, try it out with libc++, and tell us how it went! And if you get the itch to hack on Clang, there are a ton of other little C++0x features that you could implement.
>> 
>> 	Cheers,
>> 	Doug
> 
> How do I get the attached to compile without the
> following error about no std::move?
> 
> /home/evansl/download/llvm/svn/build/Debug+Asserts/bin/clang++ -c
> -std=c++0x -U__GXX_EXPERIMENTAL_CXX0X__ -c -std=c++0x move.cpp
> move.cpp:6:16: error: no member named 'move' in namespace 'std'
>    int j=std::move(i);
>          ~~~~~^

I suggest following the preprocessor logic to see what std::move isn't getting defined. That -U__GXX_EXPERIMENTAL_CXX0X__ looks really, really suspicious, though.

	- Doug
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