C++0X constexpr implementation status

[Ed Smith-Rowland]

Greetings,

In my efforts to build C++-0X library components I've noticed that 
constexpr member variables are used in several places.  I was unable to 
implement these as intended and reverted to const accessors.

It seems like the intent is sort of a static const function except that 
it binds to a specific instance.

I looked around and it looked like some effort had taken place to 
implement constexpr in the front end.  I was wondering where this effort 
left off?  Will it be picked up in the gcc-4.5 time frame?

Thanks,

Ed.