[SG10] [isocpp-lib] New issue: missing feature test macro for <span>
Billy O'Neal (VC LIBS)
bion at microsoft.com
Thu Sep 5 19:50:32 CEST 2019
P0 😋
________________________________
From: Lib <lib-bounces at lists.isocpp.org> on behalf of Jonathan Wakely via Lib <lib at lists.isocpp.org>
Sent: Thursday, September 5, 2019 04:51 AM
To: Library Working Group <lib at lists.isocpp.org>; features at isocpp.open-std.org (features at open-std.org) <features at open-std.org>
Cc: Jonathan Wakely <cxx at kayari.org>; JeanHeyd Meneide <phdofthehouse at gmail.com>
Subject: [isocpp-lib] New issue: missing feature test macro for <span>
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>
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