[SG10] [isocpp-core] No __cpp_concepts in the C++20 draft

John Spicer jhs at edg.com
Mon Sep 16 17:26:35 CEST 2019


Yes, I think we should have one.

John.

> On Sep 14, 2019, at 4:07 PM, Barry Revzin <barry.revzin at gmail.com> wrote:
> 
> On Sat, Sep 14, 2019, 2:38 PM Jason Merrill via Core <core at lists.isocpp.org <mailto:core at lists.isocpp.org>> 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.
> 
> Jason
> 
> 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...
> 
> Barry
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