Ext pointer vs N2913

[Paolo Carlini]

Hi Bob,
> Paolo & libstdc++,
>
> Thanks for bringing this to my attention.  Gave n2913 a quick read.
> It makes sense, but I think the proposal inadvertently breaks the
> ability to have alternative pointer representations in iterators.
>   
[snip]

Thanks for your feedback. I'll try to think more about these issues in
time for Santa Cruz. In the meanwhile people started discussing again
this topic on the library reflector, you may want to fetch from the
recent messages (I'm attaching below for your ease c++std-lib-24855,
c++std-lib-24867 and c++std-lib-24871).

Long term, for the actual C++1x library, I think we should pay more
attention to Ion' work for Boost, among other things.

Paolo.

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