[PATCH] libstdc++: constexpr flat_set and flat_multiset

[Yuao Ma]

Hi Jonathan,

On Tue, Dec 2, 2025 at 10:55 PM Jonathan Wakely <jwakely@redhat.com> wrote:
>
> But it seems we don't have agreement on doing it for C++23 anyway.
>

Have we reached a consensus on whether to backport this to C++23 or target
C++26 (as per the standard)? This decision affects both this patch and my
follow-up work on constexpr flat_map.

Additionally, if we decide to target C++26 as the current patch does, does
the implementation look good to you now?

Thanks,
Yuao
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