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| git_commit |
commit 026210e80d136099431c25be685020f9748e277f Author: A. Jiang <de34@live.cn> Date: Wed Aug 28 20:55:44 2024 +0800 [libc++][ranges] P2609R3: Relaxing Ranges Just A Smidge (#101715) This patch implements https://wg21.link/p2609r3. The test code was originally authored by JMazurkiewicz. Notes: - P2609R3 is not officially a Defect Report, but MSVC STL implements it in C++20 mode. Moreover, P2609R3 and P2997R1 touch exactly the same set of concepts, and MSVC STL and libc++ have already treated P2997R1 as a DR. - This patch also adjusted feature-test macros. + In C++20 mode, the value of __cpp_lib_ranges should be `202110L` because - `202202L` covers `range_adaptor_closure` (P2387R3), and - `202207L` covers move-only types in range adaptors (P2494R2). And all of these changes are only available since C++23 mode. + In C++23 mode, the value should be `202406L` because - `202211L` covers removing poison overloads (P2602R2), - `202302L` covers relaxing projected value types (P2609R3), and - `202406L` covers removing requirements on `iter_common_reference_t` (P2997R1). And all of these changes are already or being implemented. Fixes #105253. Co-authored-by: Jakub Mazurkiewicz <mazkuba3@gmail.com> |