Will __GXX_EXPERIMENTAL_CXX0X__ go away?

[Jonathan Wakely]

On 25 May 2011 07:44, Patrick Horgan wrote:
> I'm using the following in a header that uses typeof and needs to build
> in code that builds with -std=c++0x or the default -std=c++98.  Can I
> leave it and forget it, or will eventually the compiler's use of c++0x
> features no longer be experimental?  How do I future proof it?
>
> #ifdef __GXX_EXPERIMENTAL_CXX0X__
> #define typeof decltype
> #endif

Yes it will go away at some point.  The portable way to detect C++0x support is:

#if __cplusplus >= 201103L