On Mon, Jun 15, 2020 at 5:45 AM Jonathan Wakely via SG10 < [email protected]> wrote:
> Please see the 2018 thread below. I think this macro should be added to > SD-6 and the IS, and I think it should also be updated to 201811L for the > P1032R1 "Misc constexpr bits" changes that made the remaining char_traits > members constexpr. All the other bits of P1032R1 have their own macro now > instead of __cpp_lib_constexpr_misc, but not the char_traits bits. > > Libstdc++ has been defining __cpp_lib_constexpr_char_traits to 201611 for > years (and I'm about to update the value to 201811 in the relevant > branches). > > Any objection before I open an LWG issue? > Should it go into __cpp_lib_constexpr_string, based https://isocpp.org/std/standing-documents/sd-6-sg10-feature-test-recommendations#constexpr ? Barry
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