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

[Paolo Carlini]

Daniel Frey wrote:

> What happened to the "explicit"? It's required AFAICT...

You are RIGHT. I wanted to post another message correcting that, but 
after all the patch was supposed to be only a draft explaining a general 
point.

If we agree that those overloads are not buying us anything useful, we 
shall do the same for all the containers, add testcases (be careful with 
"explicit" ;) and so on...

Thanks,
Paolo.