libstdc++ not conforming with --enable-concepts-check?

[Paolo Carlini]

Hi again,

>Yes, I'll play with that idea (starting with deque, just because
>it's where I noticed it) and report how I get on.
>(I haven't solved the linker errors I was getting the other day yet,
>have bootstrapped again but not tested - had to watch Empire Strikes
>Back last night :)
>
>more data soon...
>  
>
I have some, already (sorry couldn't resist!): as far as deque is 
concerned, I think we should just /remove/ those overloads! The point is 
that they are /not/ buying us anything in this specific case! (*) Do you 
agree?

I'm attaching a draft for deque, already tested...

Paolo.

(*) Indeed, sometimes (istream:ignore, f.i.) the possibility to 
implement overloads actually enables improvements/simplifications of the 
algorithms.


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