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[ PATCH ] C++20 <span>

From: JeanHeyd Meneide <phdofthehouse at gmail dot com>
To: gcc-patches at gcc dot gnu dot org, "libstdc++" <libstdc++ at gcc dot gnu dot org>
Date: Fri, 30 Aug 2019 15:22:13 -0400
Subject: [ PATCH ] C++20 <span>

This patch implements <span> as it currently exists in the C++20 Working Draft.

Notes:
- __gnu_cxx::__normal_iterator is not fully constexpr, so its not used here
- P1394 might be slated to end up in C++20 per National Body Comments.
Therefore, an early implementation is left in an
implementation-defined _GLIBCXX_P1394 define.

2019-08-30  JeanHeyd "ThePhD" Meneide  <phdofthehouse@gmail.com>

        * include/std/span: Implement the entirety of span.
        * include/bits/range_access.h: Add __adl_* versions of access functions.
        * testsuite/23_containers/span/everything.cc: constexpr and
non-constexpr tests.
        * include/Makefile.in: Add span to install.
        * include/Makefile.am: Likewise

Attachment: ThePhD.span.patch
Description: Binary data

Follow-Ups:
- Re: [ PATCH ] C++20 <span>
  - From: Jonathan Wakely

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