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[SG10] New issue: missing feature test macro for <span>

From: Jonathan Wakely <cxx_at_[hidden]>
Date: Thu, 5 Sep 2019 12:51:10 +0100
There is no feature test macro for std::span.

For the purposes of SD-6, I think we want two values: 201803L for the
original addition of <span> by P0122R7 (Jacksonville, 2018) and then
201902L for the API changes from P1024R3 (Kona, 2019). The C++ working
draft only needs the newer value.

Proposed resolution:

Add a row to [tab:support.ft] in [support.limits.general]:

__cpp_lib_span 201902L <span>

Received on 2019-09-05 13:51:22