Yes, I think we should have one.


On Sep 14, 2019, at 4:07 PM, Barry Revzin <> wrote:

On Sat, Sep 14, 2019, 2:38 PM Jason Merrill via Core <> wrote:
This doesn't seem to have been addressed at Cologne.  I don't think
any of the changes at Cologne (conditionally trivial, unconstrained
TTP, dropping return-type requirements) require a version bump, does
anyone else?

So I'd stick with the 201811 value.


Wait, do we even have a __cpp_concepts? We have a __cpp_lib_concepts (... that def needs to be bumped to 201907), but not one for the language. We should add one...

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